[Buildroot] [PATCH] package/openjdk: allow compiling without X11 support

[Buildroot] [PATCH] package/openjdk: allow compiling without X11 support

[Thomas Devoogdt]

From: Thomas Devoogdt <thomas.devoogdt@barco.com>

Added two patches (17.0.12+7 and 21.0.4+7) to allow compilation
without X11 support. We can anyway do this since we are
compiling with --enable-headless-only.

This commit also fixes the wrong patch folders which
should have been fixed in commit 475c79d
"package/openjdk{-bin}: bump versions to 17.0.12+7 and 21.0.4+7"

Signed-off-by: Thomas Devoogdt <thomas.devoogdt@barco.com>
---
 ...ARCv2-ISA-processors-support-to-Zero.patch | 18 ++--
 ...fix-HEADLESS-compilation-without-X11.patch | 82 +++++++++++++++++++
 ...ARCv2-ISA-processors-support-to-Zero.patch | 20 ++---
 ...fix-HEADLESS-compilation-without-X11.patch | 82 +++++++++++++++++++
 package/openjdk/Config.in                     | 11 ---
 package/openjdk/openjdk.mk                    |  6 +-
 6 files changed, 184 insertions(+), 35 deletions(-)
 rename package/openjdk/{17.0.9+9 => 17.0.12+7}/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch (87%)
 create mode 100644 package/openjdk/17.0.12+7/0002-awt-fix-HEADLESS-compilation-without-X11.patch
 rename package/openjdk/{21.0.1+12 => 21.0.4+7}/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch (88%)
 create mode 100644 package/openjdk/21.0.4+7/0002-awt-fix-HEADLESS-compilation-without-X11.patch

diff --git a/package/openjdk/17.0.9+9/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch b/package/openjdk/17.0.12+7/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch
similarity index 87%
rename from package/openjdk/17.0.9+9/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch
rename to package/openjdk/17.0.12+7/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch
index afec2772c0..c4dda78fde 100644
--- a/package/openjdk/17.0.9+9/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch
+++ b/package/openjdk/17.0.12+7/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch
@@ -1,4 +1,4 @@
-From 9a3c2a0714420186ae8d5159d5416c6fa2009ad9 Mon Sep 17 00:00:00 2001
+From edf96f51d2c6d6e7a7762a879b916a5e58d8c23c Mon Sep 17 00:00:00 2001
 From: Alexey Brodkin <abrodkin@synopsys.com>
 Date: Mon, 18 Oct 2021 05:20:05 -0700
 Subject: [PATCH] Add ARCv2 ISA processors support to Zero
@@ -20,11 +20,11 @@ Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
  3 files changed, 23 insertions(+), 1 deletion(-)
 
 diff --git a/make/autoconf/libraries.m4 b/make/autoconf/libraries.m4
-index 5120918aed2..f7a99955874 100644
+index 865feea36d9..30c224e4a99 100644
 --- a/make/autoconf/libraries.m4
 +++ b/make/autoconf/libraries.m4
-@@ -152,6 +152,14 @@ AC_DEFUN_ONCE([LIB_SETUP_LIBRARIES],
-     BASIC_JVM_LIBS="$BASIC_JVM_LIBS -latomic"
+@@ -146,6 +146,14 @@ AC_DEFUN_ONCE([LIB_SETUP_LIBRARIES],
+     fi
    fi
  
 +  # Libatomic library
@@ -39,7 +39,7 @@ index 5120918aed2..f7a99955874 100644
    if test "x$OPENJDK_TARGET_OS" = xaix; then
      BASIC_JVM_LIBS="$BASIC_JVM_LIBS -lperfstat"
 diff --git a/make/autoconf/platform.m4 b/make/autoconf/platform.m4
-index c0f2446dbd7..dc416ece885 100644
+index eb66266262b..3ca94b351b2 100644
 --- a/make/autoconf/platform.m4
 +++ b/make/autoconf/platform.m4
 @@ -54,6 +54,12 @@ AC_DEFUN([PLATFORM_EXTRACT_VARS_FROM_CPU],
@@ -65,7 +65,7 @@ index c0f2446dbd7..dc416ece885 100644
      HOTSPOT_$1_CPU_DEFINE=SPARC
    elif test "x$OPENJDK_$1_CPU" = xppc; then
 diff --git a/src/hotspot/os/linux/os_linux.cpp b/src/hotspot/os/linux/os_linux.cpp
-index b08caf4d5d3..2bf084895ba 100644
+index 63b7562f118..58b43241df4 100644
 --- a/src/hotspot/os/linux/os_linux.cpp
 +++ b/src/hotspot/os/linux/os_linux.cpp
 @@ -1721,6 +1721,9 @@ void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
@@ -99,11 +99,11 @@ index b08caf4d5d3..2bf084895ba 100644
    static  Elf32_Half running_arch_code=EM_LOONGARCH;
  #else
      #error Method os::dll_load requires that one of following is defined:\
--        AARCH64, ALPHA, ARM, AMD64, IA32, IA64, LOONGARCH, M68K, MIPS, MIPSEL, PARISC, __powerpc__, __powerpc64__, RISCV, S390, SH, __sparc
-+        AARCH64, ALPHA, ARC, ARM, AMD64, IA32, IA64, LOONGARCH, M68K, MIPS, MIPSEL, PARISC, __powerpc__, __powerpc64__, RISCV, S390, SH, __sparc
+-        AARCH64, ALPHA, ARM, AMD64, IA32, IA64, LOONGARCH64, M68K, MIPS, MIPSEL, PARISC, __powerpc__, __powerpc64__, RISCV, S390, SH, __sparc
++        AARCH64, ALPHA, ARC, ARM, AMD64, IA32, IA64, LOONGARCH64, M68K, MIPS, MIPSEL, PARISC, __powerpc__, __powerpc64__, RISCV, S390, SH, __sparc
  #endif
  
    // Identify compatibility class for VM's architecture and library's architecture
 -- 
-2.16.2
+2.43.0
 
diff --git a/package/openjdk/17.0.12+7/0002-awt-fix-HEADLESS-compilation-without-X11.patch b/package/openjdk/17.0.12+7/0002-awt-fix-HEADLESS-compilation-without-X11.patch
new file mode 100644
index 0000000000..a7eb551a65
--- /dev/null
+++ b/package/openjdk/17.0.12+7/0002-awt-fix-HEADLESS-compilation-without-X11.patch
@@ -0,0 +1,82 @@
+From 8050a10ca44a20cc1a770be235701e315809bcbd Mon Sep 17 00:00:00 2001
+From: Thomas Devoogdt <thomas.devoogdt@barco.com>
+Date: Thu, 13 Nov 2025 17:23:44 +0100
+Subject: [PATCH] awt: fix HEADLESS compilation without X11
+
+Signed-off-by: Thomas Devoogdt <thomas.devoogdt@barco.com>
+---
+ make/modules/java.desktop/lib/Awt2dLibraries.gmk | 16 ++++++++++++++--
+ .../unix/native/common/awt/utility/rect.h        |  4 ++--
+ 2 files changed, 16 insertions(+), 4 deletions(-)
+
+diff --git a/make/modules/java.desktop/lib/Awt2dLibraries.gmk b/make/modules/java.desktop/lib/Awt2dLibraries.gmk
+index 46e3b1677f7..0e92ce6aeca 100644
+--- a/make/modules/java.desktop/lib/Awt2dLibraries.gmk
++++ b/make/modules/java.desktop/lib/Awt2dLibraries.gmk
+@@ -77,6 +77,10 @@ ifeq ($(call isTargetOs, windows), true)
+       #
+ endif
+ 
++ifeq ($(ENABLE_HEADLESS_ONLY), true)
++  LIBAWT_CFLAGS += -DHEADLESS
++endif
++
+ ifeq ($(call isTargetOs, linux macosx aix), true)
+   LIBAWT_EXFILES += awt_Font.c CUPSfuncs.c fontpath.c X11Color.c
+ endif
+@@ -362,13 +366,20 @@ ifeq ($(call isTargetOs, windows macosx), false)
+       $(TOPDIR)/src/$(MODULE)/$(OPENJDK_TARGET_OS_TYPE)/native/common/awt \
+       #
+ 
+-  LIBAWT_HEADLESS_EXCLUDES := medialib
++  LIBAWT_HEADLESS_EXCLUDES := medialib opengl
++
++  LIBAWT_HEADLESS_EXCLUDE_FILES := \
++      GLXGraphicsConfig.c \
++      GLXSurfaceData.c \
++      X11PMBlitLoops.c \
++      X11Renderer.c \
++      X11SurfaceData.c \
++      #
+ 
+   LIBAWT_HEADLESS_EXTRA_HEADER_DIRS := \
+       $(LIBAWT_DEFAULT_HEADER_DIRS) \
+       common/awt/debug \
+       common/font \
+-      common/java2d/opengl \
+       #
+ 
+   LIBAWT_HEADLESS_CFLAGS := $(CUPS_CFLAGS) $(FONTCONFIG_CFLAGS) $(X_CFLAGS) \
+@@ -378,6 +389,7 @@ ifeq ($(call isTargetOs, windows macosx), false)
+       NAME := awt_headless, \
+       EXTRA_SRC := $(LIBAWT_HEADLESS_EXTRA_SRC), \
+       EXCLUDES := $(LIBAWT_HEADLESS_EXCLUDES), \
++      EXCLUDE_FILES := $(LIBAWT_HEADLESS_EXCLUDE_FILES), \
+       OPTIMIZATION := LOW, \
+       CFLAGS := $(CFLAGS_JDKLIB) \
+           $(LIBAWT_HEADLESS_CFLAGS), \
+diff --git a/src/java.desktop/unix/native/common/awt/utility/rect.h b/src/java.desktop/unix/native/common/awt/utility/rect.h
+index ceea38f4349..91b5a17ec58 100644
+--- a/src/java.desktop/unix/native/common/awt/utility/rect.h
++++ b/src/java.desktop/unix/native/common/awt/utility/rect.h
+@@ -28,7 +28,7 @@
+ #ifndef _AWT_RECT_H
+ #define _AWT_RECT_H
+ 
+-#ifndef MACOSX
++#if !defined(HEADLESS) && !defined(MACOSX)
+ #include <X11/Xlib.h>
+ typedef XRectangle RECT_T;
+ #else
+@@ -39,7 +39,7 @@ typedef struct {
+     int width;
+     int height;
+ } RECT_T;
+-#endif /* !MACOSX */
++#endif /* !HEADLESS && !MACOSX */
+ 
+ #define RECT_EQ_X(r1,r2)        ((r1).x==(r2).x && (r1).width==(r2).width)
+ 
+-- 
+2.43.0
+
diff --git a/package/openjdk/21.0.1+12/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch b/package/openjdk/21.0.4+7/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch
similarity index 88%
rename from package/openjdk/21.0.1+12/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch
rename to package/openjdk/21.0.4+7/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch
index 6c46ec7b42..89ec2996d3 100644
--- a/package/openjdk/21.0.1+12/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch
+++ b/package/openjdk/21.0.4+7/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch
@@ -1,4 +1,4 @@
-From 9a3c2a0714420186ae8d5159d5416c6fa2009ad9 Mon Sep 17 00:00:00 2001
+From c990ac56c441682b65a3dc699a753e1d924b40d1 Mon Sep 17 00:00:00 2001
 From: Alexey Brodkin <abrodkin@synopsys.com>
 Date: Mon, 18 Oct 2021 05:20:05 -0700
 Subject: [PATCH] Add ARCv2 ISA processors support to Zero
@@ -20,10 +20,10 @@ Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
  3 files changed, 23 insertions(+), 1 deletion(-)
 
 diff --git a/make/autoconf/libraries.m4 b/make/autoconf/libraries.m4
-index 5120918aed2..f7a99955874 100644
+index 51d4f724c33..41844933a14 100644
 --- a/make/autoconf/libraries.m4
 +++ b/make/autoconf/libraries.m4
-@@ -163,6 +163,14 @@ AC_DEFUN_ONCE([LIB_SETUP_LIBRARIES],
+@@ -157,6 +157,14 @@ AC_DEFUN_ONCE([LIB_SETUP_LIBRARIES],
      BASIC_JVM_LIBS="$BASIC_JVM_LIBS -lrt"
    fi
  
@@ -39,7 +39,7 @@ index 5120918aed2..f7a99955874 100644
    if test "x$OPENJDK_TARGET_OS" = xaix; then
      BASIC_JVM_LIBS="$BASIC_JVM_LIBS -lperfstat"
 diff --git a/make/autoconf/platform.m4 b/make/autoconf/platform.m4
-index c0f2446dbd7..dc416ece885 100644
+index df610cc489b..2e21572ba4d 100644
 --- a/make/autoconf/platform.m4
 +++ b/make/autoconf/platform.m4
 @@ -54,6 +54,12 @@ AC_DEFUN([PLATFORM_EXTRACT_VARS_FROM_CPU],
@@ -65,10 +65,10 @@ index c0f2446dbd7..dc416ece885 100644
      HOTSPOT_$1_CPU_DEFINE=SPARC
    elif test "x$OPENJDK_$1_CPU" = xppc; then
 diff --git a/src/hotspot/os/linux/os_linux.cpp b/src/hotspot/os/linux/os_linux.cpp
-index b08caf4d5d3..2bf084895ba 100644
+index 492300a37d4..3a10790f4a0 100644
 --- a/src/hotspot/os/linux/os_linux.cpp
 +++ b/src/hotspot/os/linux/os_linux.cpp
-@@ -1653,6 +1653,9 @@ void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
+@@ -1663,6 +1663,9 @@ void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
  #ifndef EM_AARCH64
    #define EM_AARCH64    183               /* ARM AARCH64 */
  #endif
@@ -78,7 +78,7 @@ index b08caf4d5d3..2bf084895ba 100644
  #ifndef EM_RISCV
    #define EM_RISCV      243               /* RISC-V */
  #endif
-@@ -1677,6 +1680,7 @@ void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
+@@ -1687,6 +1690,7 @@ void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
      {EM_SH,          EM_SH,      ELFCLASS32, ELFDATA2MSB, (char*)"SuperH BE"},
  #endif
      {EM_ARM,         EM_ARM,     ELFCLASS32, ELFDATA2LSB, (char*)"ARM"},
@@ -86,7 +86,7 @@ index b08caf4d5d3..2bf084895ba 100644
      // we only support 64 bit z architecture
      {EM_S390,        EM_S390,    ELFCLASS64, ELFDATA2MSB, (char*)"IBM System/390"},
      {EM_ALPHA,       EM_ALPHA,   ELFCLASS64, ELFDATA2LSB, (char*)"Alpha"},
-@@ -1709,6 +1713,8 @@ void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
+@@ -1719,6 +1723,8 @@ void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
    static  Elf32_Half running_arch_code=EM_PPC;
  #elif  (defined AARCH64)
    static  Elf32_Half running_arch_code=EM_AARCH64;
@@ -95,7 +95,7 @@ index b08caf4d5d3..2bf084895ba 100644
  #elif  (defined ARM)
    static  Elf32_Half running_arch_code=EM_ARM;
  #elif  (defined S390)
-@@ -1731,7 +1737,7 @@ void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
+@@ -1741,7 +1747,7 @@ void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
    static  Elf32_Half running_arch_code=EM_LOONGARCH;
  #else
      #error Method os::dll_load requires that one of following is defined:\
@@ -105,5 +105,5 @@ index b08caf4d5d3..2bf084895ba 100644
  
    // Identify compatibility class for VM's architecture and library's architecture
 -- 
-2.16.2
+2.43.0
 
diff --git a/package/openjdk/21.0.4+7/0002-awt-fix-HEADLESS-compilation-without-X11.patch b/package/openjdk/21.0.4+7/0002-awt-fix-HEADLESS-compilation-without-X11.patch
new file mode 100644
index 0000000000..9da914484e
--- /dev/null
+++ b/package/openjdk/21.0.4+7/0002-awt-fix-HEADLESS-compilation-without-X11.patch
@@ -0,0 +1,82 @@
+From 38b0585952c18b884e844ffc6fd33cd934502553 Mon Sep 17 00:00:00 2001
+From: Thomas Devoogdt <thomas.devoogdt@barco.com>
+Date: Thu, 13 Nov 2025 17:23:44 +0100
+Subject: [PATCH] awt: fix HEADLESS compilation without X11
+
+Signed-off-by: Thomas Devoogdt <thomas.devoogdt@barco.com>
+---
+ make/modules/java.desktop/lib/Awt2dLibraries.gmk | 16 ++++++++++++++--
+ .../unix/native/common/awt/utility/rect.h        |  4 ++--
+ 2 files changed, 16 insertions(+), 4 deletions(-)
+
+diff --git a/make/modules/java.desktop/lib/Awt2dLibraries.gmk b/make/modules/java.desktop/lib/Awt2dLibraries.gmk
+index a33f219e83e..de57e88a4ce 100644
+--- a/make/modules/java.desktop/lib/Awt2dLibraries.gmk
++++ b/make/modules/java.desktop/lib/Awt2dLibraries.gmk
+@@ -77,6 +77,10 @@ ifeq ($(call isTargetOs, windows), true)
+       #
+ endif
+ 
++ifeq ($(ENABLE_HEADLESS_ONLY), true)
++  LIBAWT_CFLAGS += -DHEADLESS
++endif
++
+ ifeq ($(call isTargetOs, linux macosx aix), true)
+   LIBAWT_EXFILES += awt_Font.c CUPSfuncs.c fontpath.c X11Color.c
+ endif
+@@ -368,13 +372,20 @@ ifeq ($(call isTargetOs, windows macosx), false)
+       $(TOPDIR)/src/$(MODULE)/$(OPENJDK_TARGET_OS_TYPE)/native/common/awt \
+       #
+ 
+-  LIBAWT_HEADLESS_EXCLUDES := medialib
++  LIBAWT_HEADLESS_EXCLUDES := medialib opengl
++
++  LIBAWT_HEADLESS_EXCLUDE_FILES := \
++      GLXGraphicsConfig.c \
++      GLXSurfaceData.c \
++      X11PMBlitLoops.c \
++      X11Renderer.c \
++      X11SurfaceData.c \
++      #
+ 
+   LIBAWT_HEADLESS_EXTRA_HEADER_DIRS := \
+       $(LIBAWT_DEFAULT_HEADER_DIRS) \
+       common/awt/debug \
+       common/font \
+-      common/java2d/opengl \
+       #
+ 
+   LIBAWT_HEADLESS_CFLAGS := $(CUPS_CFLAGS) $(FONTCONFIG_CFLAGS) $(X_CFLAGS) \
+@@ -384,6 +395,7 @@ ifeq ($(call isTargetOs, windows macosx), false)
+       NAME := awt_headless, \
+       EXTRA_SRC := $(LIBAWT_HEADLESS_EXTRA_SRC), \
+       EXCLUDES := $(LIBAWT_HEADLESS_EXCLUDES), \
++      EXCLUDE_FILES := $(LIBAWT_HEADLESS_EXCLUDE_FILES), \
+       OPTIMIZATION := LOW, \
+       CFLAGS := $(CFLAGS_JDKLIB) \
+           $(LIBAWT_HEADLESS_CFLAGS), \
+diff --git a/src/java.desktop/unix/native/common/awt/utility/rect.h b/src/java.desktop/unix/native/common/awt/utility/rect.h
+index ceea38f4349..91b5a17ec58 100644
+--- a/src/java.desktop/unix/native/common/awt/utility/rect.h
++++ b/src/java.desktop/unix/native/common/awt/utility/rect.h
+@@ -28,7 +28,7 @@
+ #ifndef _AWT_RECT_H
+ #define _AWT_RECT_H
+ 
+-#ifndef MACOSX
++#if !defined(HEADLESS) && !defined(MACOSX)
+ #include <X11/Xlib.h>
+ typedef XRectangle RECT_T;
+ #else
+@@ -39,7 +39,7 @@ typedef struct {
+     int width;
+     int height;
+ } RECT_T;
+-#endif /* !MACOSX */
++#endif /* !HEADLESS && !MACOSX */
+ 
+ #define RECT_EQ_X(r1,r2)        ((r1).x==(r2).x && (r1).width==(r2).width)
+ 
+-- 
+2.43.0
+
diff --git a/package/openjdk/Config.in b/package/openjdk/Config.in
index 78775370ca..5fb36c78e0 100644
--- a/package/openjdk/Config.in
+++ b/package/openjdk/Config.in
@@ -29,7 +29,6 @@ config BR2_PACKAGE_OPENJDK
 	depends on BR2_HOST_GCC_AT_LEAST_4_9 # C++14
 	depends on BR2_TOOLCHAIN_USES_GLIBC
 	depends on BR2_USE_MMU # cups
-	depends on BR2_PACKAGE_XORG7
 	select BR2_PACKAGE_ALSA_LIB
 	select BR2_PACKAGE_ALSA_LIB_MIXER
 	select BR2_PACKAGE_ALSA_LIB_PCM
@@ -42,10 +41,6 @@ config BR2_PACKAGE_OPENJDK
 	select BR2_PACKAGE_LCMS2
 	select BR2_PACKAGE_LIBPNG
 	select BR2_PACKAGE_LIBUSB
-	select BR2_PACKAGE_XLIB_LIBXRANDR
-	select BR2_PACKAGE_XLIB_LIBXRENDER
-	select BR2_PACKAGE_XLIB_LIBXT
-	select BR2_PACKAGE_XLIB_LIBXTST
 	select BR2_PACKAGE_ZLIB
 	help
 	  OpenJDK is a free and open-source implementation of the
@@ -155,12 +150,6 @@ config BR2_PACKAGE_OPENJDK_JVM_VARIANT_ZERO
 endchoice
 endif
 
-comment "openjdk needs X.Org"
-	depends on BR2_PACKAGE_OPENJDK_ARCH_SUPPORTS
-	depends on BR2_PACKAGE_HOST_OPENJDK_BIN_ARCH_SUPPORTS
-	depends on BR2_USE_MMU
-	depends on !BR2_PACKAGE_XORG7
-
 comment "openjdk needs glibc, and a toolchain w/ wchar, dynamic library, threads, C++, gcc >= 4.9, host gcc >= 4.9"
 	depends on BR2_USE_MMU
 	depends on BR2_PACKAGE_OPENJDK_ARCH_SUPPORTS
diff --git a/package/openjdk/openjdk.mk b/package/openjdk/openjdk.mk
index 446e4aa3c2..f59eb69782 100644
--- a/package/openjdk/openjdk.mk
+++ b/package/openjdk/openjdk.mk
@@ -18,7 +18,7 @@ OPENJDK_LICENSE = GPL-2.0+ with exception
 OPENJDK_LICENSE_FILES = LICENSE
 OPENJDK_INSTALL_STAGING = YES
 
-# OpenJDK requires Alsa, cups, and X11 even for a headless build.
+# OpenJDK requires Alsa and cups,
 # host-zip is needed for the zip executable.
 OPENJDK_DEPENDENCIES = \
 	host-gawk \
@@ -34,10 +34,6 @@ OPENJDK_DEPENDENCIES = \
 	lcms2 \
 	libpng \
 	libusb \
-	xlib_libXrandr \
-	xlib_libXrender \
-	xlib_libXt \
-	xlib_libXtst \
 	zlib
 
 # JVM variants
-- 
2.43.0

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[Buildroot] [PATCH v2] package/openjdk: allow compiling without X11 support

[Thomas Devoogdt]

From: Thomas Devoogdt <thomas.devoogdt@barco.com>

Added patches (17.0.12+7 and 21.0.4+7) to allow compilation
without X11 support.

0003-autoconf-libraries-drop-the-need-for-X11-in-headless.patch
is only needed for 21.0.4+7, 17.0.12+7 has this commit:
https://github.com/openjdk/jdk17u/commit/f97ec359ec688346956c29002edb28703d3ba032

Next to that, add a new option BR2_PACKAGE_OPENJDK_HEADLESS,
to allow compilation with both head and headless support.

This commit also fixes the wrong patch folders which
should have been fixed in commit 475c79d
"package/openjdk{-bin}: bump versions to 17.0.12+7 and 21.0.4+7"

Signed-off-by: Thomas Devoogdt <thomas.devoogdt@barco.com>
---
 ...ARCv2-ISA-processors-support-to-Zero.patch | 18 ++--
 ...fix-HEADLESS-compilation-without-X11.patch | 83 +++++++++++++++++++
 ...ARCv2-ISA-processors-support-to-Zero.patch | 20 ++---
 ...fix-HEADLESS-compilation-without-X11.patch | 83 +++++++++++++++++++
 ...es-drop-the-need-for-X11-in-headless.patch | 35 ++++++++
 package/openjdk/Config.in                     | 21 +++--
 package/openjdk/openjdk.mk                    | 14 ++--
 7 files changed, 238 insertions(+), 36 deletions(-)
 rename package/openjdk/{17.0.9+9 => 17.0.12+7}/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch (87%)
 create mode 100644 package/openjdk/17.0.12+7/0002-awt-fix-HEADLESS-compilation-without-X11.patch
 rename package/openjdk/{21.0.1+12 => 21.0.4+7}/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch (88%)
 create mode 100644 package/openjdk/21.0.4+7/0002-awt-fix-HEADLESS-compilation-without-X11.patch
 create mode 100644 package/openjdk/21.0.4+7/0003-autoconf-libraries-drop-the-need-for-X11-in-headless.patch

diff --git a/package/openjdk/17.0.9+9/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch b/package/openjdk/17.0.12+7/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch
similarity index 87%
rename from package/openjdk/17.0.9+9/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch
rename to package/openjdk/17.0.12+7/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch
index afec2772c0..c4dda78fde 100644
--- a/package/openjdk/17.0.9+9/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch
+++ b/package/openjdk/17.0.12+7/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch
@@ -1,4 +1,4 @@
-From 9a3c2a0714420186ae8d5159d5416c6fa2009ad9 Mon Sep 17 00:00:00 2001
+From edf96f51d2c6d6e7a7762a879b916a5e58d8c23c Mon Sep 17 00:00:00 2001
 From: Alexey Brodkin <abrodkin@synopsys.com>
 Date: Mon, 18 Oct 2021 05:20:05 -0700
 Subject: [PATCH] Add ARCv2 ISA processors support to Zero
@@ -20,11 +20,11 @@ Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
  3 files changed, 23 insertions(+), 1 deletion(-)
 
 diff --git a/make/autoconf/libraries.m4 b/make/autoconf/libraries.m4
-index 5120918aed2..f7a99955874 100644
+index 865feea36d9..30c224e4a99 100644
 --- a/make/autoconf/libraries.m4
 +++ b/make/autoconf/libraries.m4
-@@ -152,6 +152,14 @@ AC_DEFUN_ONCE([LIB_SETUP_LIBRARIES],
-     BASIC_JVM_LIBS="$BASIC_JVM_LIBS -latomic"
+@@ -146,6 +146,14 @@ AC_DEFUN_ONCE([LIB_SETUP_LIBRARIES],
+     fi
    fi
  
 +  # Libatomic library
@@ -39,7 +39,7 @@ index 5120918aed2..f7a99955874 100644
    if test "x$OPENJDK_TARGET_OS" = xaix; then
      BASIC_JVM_LIBS="$BASIC_JVM_LIBS -lperfstat"
 diff --git a/make/autoconf/platform.m4 b/make/autoconf/platform.m4
-index c0f2446dbd7..dc416ece885 100644
+index eb66266262b..3ca94b351b2 100644
 --- a/make/autoconf/platform.m4
 +++ b/make/autoconf/platform.m4
 @@ -54,6 +54,12 @@ AC_DEFUN([PLATFORM_EXTRACT_VARS_FROM_CPU],
@@ -65,7 +65,7 @@ index c0f2446dbd7..dc416ece885 100644
      HOTSPOT_$1_CPU_DEFINE=SPARC
    elif test "x$OPENJDK_$1_CPU" = xppc; then
 diff --git a/src/hotspot/os/linux/os_linux.cpp b/src/hotspot/os/linux/os_linux.cpp
-index b08caf4d5d3..2bf084895ba 100644
+index 63b7562f118..58b43241df4 100644
 --- a/src/hotspot/os/linux/os_linux.cpp
 +++ b/src/hotspot/os/linux/os_linux.cpp
 @@ -1721,6 +1721,9 @@ void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
@@ -99,11 +99,11 @@ index b08caf4d5d3..2bf084895ba 100644
    static  Elf32_Half running_arch_code=EM_LOONGARCH;
  #else
      #error Method os::dll_load requires that one of following is defined:\
--        AARCH64, ALPHA, ARM, AMD64, IA32, IA64, LOONGARCH, M68K, MIPS, MIPSEL, PARISC, __powerpc__, __powerpc64__, RISCV, S390, SH, __sparc
-+        AARCH64, ALPHA, ARC, ARM, AMD64, IA32, IA64, LOONGARCH, M68K, MIPS, MIPSEL, PARISC, __powerpc__, __powerpc64__, RISCV, S390, SH, __sparc
+-        AARCH64, ALPHA, ARM, AMD64, IA32, IA64, LOONGARCH64, M68K, MIPS, MIPSEL, PARISC, __powerpc__, __powerpc64__, RISCV, S390, SH, __sparc
++        AARCH64, ALPHA, ARC, ARM, AMD64, IA32, IA64, LOONGARCH64, M68K, MIPS, MIPSEL, PARISC, __powerpc__, __powerpc64__, RISCV, S390, SH, __sparc
  #endif
  
    // Identify compatibility class for VM's architecture and library's architecture
 -- 
-2.16.2
+2.43.0
 
diff --git a/package/openjdk/17.0.12+7/0002-awt-fix-HEADLESS-compilation-without-X11.patch b/package/openjdk/17.0.12+7/0002-awt-fix-HEADLESS-compilation-without-X11.patch
new file mode 100644
index 0000000000..183f667dea
--- /dev/null
+++ b/package/openjdk/17.0.12+7/0002-awt-fix-HEADLESS-compilation-without-X11.patch
@@ -0,0 +1,83 @@
+From 8df09bb41f8aec8904a2231facc76660d2a83236 Mon Sep 17 00:00:00 2001
+From: Thomas Devoogdt <thomas@devoogdt.com>
+Date: Thu, 13 Nov 2025 17:23:44 +0100
+Subject: [PATCH] awt: fix HEADLESS compilation without X11
+
+Upstream: https://github.com/openjdk/jdk/pull/28310
+Signed-off-by: Thomas Devoogdt <thomas@devoogdt.com>
+---
+ make/modules/java.desktop/lib/Awt2dLibraries.gmk | 16 ++++++++++++++--
+ .../unix/native/common/awt/utility/rect.h        |  4 ++--
+ 2 files changed, 16 insertions(+), 4 deletions(-)
+
+diff --git a/make/modules/java.desktop/lib/Awt2dLibraries.gmk b/make/modules/java.desktop/lib/Awt2dLibraries.gmk
+index 46e3b1677f7..0e92ce6aeca 100644
+--- a/make/modules/java.desktop/lib/Awt2dLibraries.gmk
++++ b/make/modules/java.desktop/lib/Awt2dLibraries.gmk
+@@ -77,6 +77,10 @@ ifeq ($(call isTargetOs, windows), true)
+       #
+ endif
+ 
++ifeq ($(ENABLE_HEADLESS_ONLY), true)
++  LIBAWT_CFLAGS += -DHEADLESS
++endif
++
+ ifeq ($(call isTargetOs, linux macosx aix), true)
+   LIBAWT_EXFILES += awt_Font.c CUPSfuncs.c fontpath.c X11Color.c
+ endif
+@@ -362,13 +366,20 @@ ifeq ($(call isTargetOs, windows macosx), false)
+       $(TOPDIR)/src/$(MODULE)/$(OPENJDK_TARGET_OS_TYPE)/native/common/awt \
+       #
+ 
+-  LIBAWT_HEADLESS_EXCLUDES := medialib
++  LIBAWT_HEADLESS_EXCLUDES := medialib opengl
++
++  LIBAWT_HEADLESS_EXCLUDE_FILES := \
++      GLXGraphicsConfig.c \
++      GLXSurfaceData.c \
++      X11PMBlitLoops.c \
++      X11Renderer.c \
++      X11SurfaceData.c \
++      #
+ 
+   LIBAWT_HEADLESS_EXTRA_HEADER_DIRS := \
+       $(LIBAWT_DEFAULT_HEADER_DIRS) \
+       common/awt/debug \
+       common/font \
+-      common/java2d/opengl \
+       #
+ 
+   LIBAWT_HEADLESS_CFLAGS := $(CUPS_CFLAGS) $(FONTCONFIG_CFLAGS) $(X_CFLAGS) \
+@@ -378,6 +389,7 @@ ifeq ($(call isTargetOs, windows macosx), false)
+       NAME := awt_headless, \
+       EXTRA_SRC := $(LIBAWT_HEADLESS_EXTRA_SRC), \
+       EXCLUDES := $(LIBAWT_HEADLESS_EXCLUDES), \
++      EXCLUDE_FILES := $(LIBAWT_HEADLESS_EXCLUDE_FILES), \
+       OPTIMIZATION := LOW, \
+       CFLAGS := $(CFLAGS_JDKLIB) \
+           $(LIBAWT_HEADLESS_CFLAGS), \
+diff --git a/src/java.desktop/unix/native/common/awt/utility/rect.h b/src/java.desktop/unix/native/common/awt/utility/rect.h
+index ceea38f4349..91b5a17ec58 100644
+--- a/src/java.desktop/unix/native/common/awt/utility/rect.h
++++ b/src/java.desktop/unix/native/common/awt/utility/rect.h
+@@ -28,7 +28,7 @@
+ #ifndef _AWT_RECT_H
+ #define _AWT_RECT_H
+ 
+-#ifndef MACOSX
++#if !defined(HEADLESS) && !defined(MACOSX)
+ #include <X11/Xlib.h>
+ typedef XRectangle RECT_T;
+ #else
+@@ -39,7 +39,7 @@ typedef struct {
+     int width;
+     int height;
+ } RECT_T;
+-#endif /* !MACOSX */
++#endif /* !HEADLESS && !MACOSX */
+ 
+ #define RECT_EQ_X(r1,r2)        ((r1).x==(r2).x && (r1).width==(r2).width)
+ 
+-- 
+2.43.0
+
diff --git a/package/openjdk/21.0.1+12/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch b/package/openjdk/21.0.4+7/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch
similarity index 88%
rename from package/openjdk/21.0.1+12/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch
rename to package/openjdk/21.0.4+7/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch
index 6c46ec7b42..89ec2996d3 100644
--- a/package/openjdk/21.0.1+12/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch
+++ b/package/openjdk/21.0.4+7/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch
@@ -1,4 +1,4 @@
-From 9a3c2a0714420186ae8d5159d5416c6fa2009ad9 Mon Sep 17 00:00:00 2001
+From c990ac56c441682b65a3dc699a753e1d924b40d1 Mon Sep 17 00:00:00 2001
 From: Alexey Brodkin <abrodkin@synopsys.com>
 Date: Mon, 18 Oct 2021 05:20:05 -0700
 Subject: [PATCH] Add ARCv2 ISA processors support to Zero
@@ -20,10 +20,10 @@ Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
  3 files changed, 23 insertions(+), 1 deletion(-)
 
 diff --git a/make/autoconf/libraries.m4 b/make/autoconf/libraries.m4
-index 5120918aed2..f7a99955874 100644
+index 51d4f724c33..41844933a14 100644
 --- a/make/autoconf/libraries.m4
 +++ b/make/autoconf/libraries.m4
-@@ -163,6 +163,14 @@ AC_DEFUN_ONCE([LIB_SETUP_LIBRARIES],
+@@ -157,6 +157,14 @@ AC_DEFUN_ONCE([LIB_SETUP_LIBRARIES],
      BASIC_JVM_LIBS="$BASIC_JVM_LIBS -lrt"
    fi
  
@@ -39,7 +39,7 @@ index 5120918aed2..f7a99955874 100644
    if test "x$OPENJDK_TARGET_OS" = xaix; then
      BASIC_JVM_LIBS="$BASIC_JVM_LIBS -lperfstat"
 diff --git a/make/autoconf/platform.m4 b/make/autoconf/platform.m4
-index c0f2446dbd7..dc416ece885 100644
+index df610cc489b..2e21572ba4d 100644
 --- a/make/autoconf/platform.m4
 +++ b/make/autoconf/platform.m4
 @@ -54,6 +54,12 @@ AC_DEFUN([PLATFORM_EXTRACT_VARS_FROM_CPU],
@@ -65,10 +65,10 @@ index c0f2446dbd7..dc416ece885 100644
      HOTSPOT_$1_CPU_DEFINE=SPARC
    elif test "x$OPENJDK_$1_CPU" = xppc; then
 diff --git a/src/hotspot/os/linux/os_linux.cpp b/src/hotspot/os/linux/os_linux.cpp
-index b08caf4d5d3..2bf084895ba 100644
+index 492300a37d4..3a10790f4a0 100644
 --- a/src/hotspot/os/linux/os_linux.cpp
 +++ b/src/hotspot/os/linux/os_linux.cpp
-@@ -1653,6 +1653,9 @@ void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
+@@ -1663,6 +1663,9 @@ void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
  #ifndef EM_AARCH64
    #define EM_AARCH64    183               /* ARM AARCH64 */
  #endif
@@ -78,7 +78,7 @@ index b08caf4d5d3..2bf084895ba 100644
  #ifndef EM_RISCV
    #define EM_RISCV      243               /* RISC-V */
  #endif
-@@ -1677,6 +1680,7 @@ void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
+@@ -1687,6 +1690,7 @@ void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
      {EM_SH,          EM_SH,      ELFCLASS32, ELFDATA2MSB, (char*)"SuperH BE"},
  #endif
      {EM_ARM,         EM_ARM,     ELFCLASS32, ELFDATA2LSB, (char*)"ARM"},
@@ -86,7 +86,7 @@ index b08caf4d5d3..2bf084895ba 100644
      // we only support 64 bit z architecture
      {EM_S390,        EM_S390,    ELFCLASS64, ELFDATA2MSB, (char*)"IBM System/390"},
      {EM_ALPHA,       EM_ALPHA,   ELFCLASS64, ELFDATA2LSB, (char*)"Alpha"},
-@@ -1709,6 +1713,8 @@ void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
+@@ -1719,6 +1723,8 @@ void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
    static  Elf32_Half running_arch_code=EM_PPC;
  #elif  (defined AARCH64)
    static  Elf32_Half running_arch_code=EM_AARCH64;
@@ -95,7 +95,7 @@ index b08caf4d5d3..2bf084895ba 100644
  #elif  (defined ARM)
    static  Elf32_Half running_arch_code=EM_ARM;
  #elif  (defined S390)
-@@ -1731,7 +1737,7 @@ void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
+@@ -1741,7 +1747,7 @@ void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
    static  Elf32_Half running_arch_code=EM_LOONGARCH;
  #else
      #error Method os::dll_load requires that one of following is defined:\
@@ -105,5 +105,5 @@ index b08caf4d5d3..2bf084895ba 100644
  
    // Identify compatibility class for VM's architecture and library's architecture
 -- 
-2.16.2
+2.43.0
 
diff --git a/package/openjdk/21.0.4+7/0002-awt-fix-HEADLESS-compilation-without-X11.patch b/package/openjdk/21.0.4+7/0002-awt-fix-HEADLESS-compilation-without-X11.patch
new file mode 100644
index 0000000000..5bb59a0bdd
--- /dev/null
+++ b/package/openjdk/21.0.4+7/0002-awt-fix-HEADLESS-compilation-without-X11.patch
@@ -0,0 +1,83 @@
+From 13a908b3d192e477b7572b522837efd771f5e2f9 Mon Sep 17 00:00:00 2001
+From: Thomas Devoogdt <thomas@devoogdt.com>
+Date: Thu, 13 Nov 2025 17:23:44 +0100
+Subject: [PATCH] awt: fix HEADLESS compilation without X11
+
+Upstream: https://github.com/openjdk/jdk/pull/28310
+Signed-off-by: Thomas Devoogdt <thomas@devoogdt.com>
+---
+ make/modules/java.desktop/lib/Awt2dLibraries.gmk | 16 ++++++++++++++--
+ .../unix/native/common/awt/utility/rect.h        |  4 ++--
+ 2 files changed, 16 insertions(+), 4 deletions(-)
+
+diff --git a/make/modules/java.desktop/lib/Awt2dLibraries.gmk b/make/modules/java.desktop/lib/Awt2dLibraries.gmk
+index a33f219e83e..de57e88a4ce 100644
+--- a/make/modules/java.desktop/lib/Awt2dLibraries.gmk
++++ b/make/modules/java.desktop/lib/Awt2dLibraries.gmk
+@@ -77,6 +77,10 @@ ifeq ($(call isTargetOs, windows), true)
+       #
+ endif
+ 
++ifeq ($(ENABLE_HEADLESS_ONLY), true)
++  LIBAWT_CFLAGS += -DHEADLESS
++endif
++
+ ifeq ($(call isTargetOs, linux macosx aix), true)
+   LIBAWT_EXFILES += awt_Font.c CUPSfuncs.c fontpath.c X11Color.c
+ endif
+@@ -368,13 +372,20 @@ ifeq ($(call isTargetOs, windows macosx), false)
+       $(TOPDIR)/src/$(MODULE)/$(OPENJDK_TARGET_OS_TYPE)/native/common/awt \
+       #
+ 
+-  LIBAWT_HEADLESS_EXCLUDES := medialib
++  LIBAWT_HEADLESS_EXCLUDES := medialib opengl
++
++  LIBAWT_HEADLESS_EXCLUDE_FILES := \
++      GLXGraphicsConfig.c \
++      GLXSurfaceData.c \
++      X11PMBlitLoops.c \
++      X11Renderer.c \
++      X11SurfaceData.c \
++      #
+ 
+   LIBAWT_HEADLESS_EXTRA_HEADER_DIRS := \
+       $(LIBAWT_DEFAULT_HEADER_DIRS) \
+       common/awt/debug \
+       common/font \
+-      common/java2d/opengl \
+       #
+ 
+   LIBAWT_HEADLESS_CFLAGS := $(CUPS_CFLAGS) $(FONTCONFIG_CFLAGS) $(X_CFLAGS) \
+@@ -384,6 +395,7 @@ ifeq ($(call isTargetOs, windows macosx), false)
+       NAME := awt_headless, \
+       EXTRA_SRC := $(LIBAWT_HEADLESS_EXTRA_SRC), \
+       EXCLUDES := $(LIBAWT_HEADLESS_EXCLUDES), \
++      EXCLUDE_FILES := $(LIBAWT_HEADLESS_EXCLUDE_FILES), \
+       OPTIMIZATION := LOW, \
+       CFLAGS := $(CFLAGS_JDKLIB) \
+           $(LIBAWT_HEADLESS_CFLAGS), \
+diff --git a/src/java.desktop/unix/native/common/awt/utility/rect.h b/src/java.desktop/unix/native/common/awt/utility/rect.h
+index ceea38f4349..91b5a17ec58 100644
+--- a/src/java.desktop/unix/native/common/awt/utility/rect.h
++++ b/src/java.desktop/unix/native/common/awt/utility/rect.h
+@@ -28,7 +28,7 @@
+ #ifndef _AWT_RECT_H
+ #define _AWT_RECT_H
+ 
+-#ifndef MACOSX
++#if !defined(HEADLESS) && !defined(MACOSX)
+ #include <X11/Xlib.h>
+ typedef XRectangle RECT_T;
+ #else
+@@ -39,7 +39,7 @@ typedef struct {
+     int width;
+     int height;
+ } RECT_T;
+-#endif /* !MACOSX */
++#endif /* !HEADLESS && !MACOSX */
+ 
+ #define RECT_EQ_X(r1,r2)        ((r1).x==(r2).x && (r1).width==(r2).width)
+ 
+-- 
+2.43.0
+
diff --git a/package/openjdk/21.0.4+7/0003-autoconf-libraries-drop-the-need-for-X11-in-headless.patch b/package/openjdk/21.0.4+7/0003-autoconf-libraries-drop-the-need-for-X11-in-headless.patch
new file mode 100644
index 0000000000..bb182fa2b9
--- /dev/null
+++ b/package/openjdk/21.0.4+7/0003-autoconf-libraries-drop-the-need-for-X11-in-headless.patch
@@ -0,0 +1,35 @@
+From 46b9a0ad24f7f299ff23e13bc8ef01c188d246b6 Mon Sep 17 00:00:00 2001
+From: Thomas Devoogdt <thomas@devoogdt.com>
+Date: Thu, 13 Nov 2025 23:10:20 +0100
+Subject: [PATCH] autoconf: libraries: drop the need for X11 in headless mode
+
+Upstream: https://github.com/openjdk/jdk/pull/28310
+Signed-off-by: Thomas Devoogdt <thomas@devoogdt.com>
+---
+ make/autoconf/libraries.m4 | 8 ++++----
+ 1 file changed, 4 insertions(+), 4 deletions(-)
+
+diff --git a/make/autoconf/libraries.m4 b/make/autoconf/libraries.m4
+index 51d4f724c33..6a8b925c3f2 100644
+--- a/make/autoconf/libraries.m4
++++ b/make/autoconf/libraries.m4
+@@ -42,12 +42,12 @@ m4_include([lib-tests.m4])
+ AC_DEFUN_ONCE([LIB_DETERMINE_DEPENDENCIES],
+ [
+   # Check if X11 is needed
+-  if test "x$OPENJDK_TARGET_OS" = xwindows || test "x$OPENJDK_TARGET_OS" = xmacosx; then
+-    # No X11 support on windows or macosx
++  if test "x$OPENJDK_TARGET_OS" = xwindows ||
++     test "x$OPENJDK_TARGET_OS" = xmacosx ||
++     test "x$ENABLE_HEADLESS_ONLY" = xtrue; then
+     NEEDS_LIB_X11=false
+   else
+-    # All other instances need X11, even if building headless only, libawt still
+-    # needs X11 headers.
++    # All other instances need X11 for libawt.
+     NEEDS_LIB_X11=true
+   fi
+ 
+-- 
+2.43.0
+
diff --git a/package/openjdk/Config.in b/package/openjdk/Config.in
index 78775370ca..539cdf273f 100644
--- a/package/openjdk/Config.in
+++ b/package/openjdk/Config.in
@@ -29,7 +29,6 @@ config BR2_PACKAGE_OPENJDK
 	depends on BR2_HOST_GCC_AT_LEAST_4_9 # C++14
 	depends on BR2_TOOLCHAIN_USES_GLIBC
 	depends on BR2_USE_MMU # cups
-	depends on BR2_PACKAGE_XORG7
 	select BR2_PACKAGE_ALSA_LIB
 	select BR2_PACKAGE_ALSA_LIB_MIXER
 	select BR2_PACKAGE_ALSA_LIB_PCM
@@ -42,10 +41,10 @@ config BR2_PACKAGE_OPENJDK
 	select BR2_PACKAGE_LCMS2
 	select BR2_PACKAGE_LIBPNG
 	select BR2_PACKAGE_LIBUSB
-	select BR2_PACKAGE_XLIB_LIBXRANDR
-	select BR2_PACKAGE_XLIB_LIBXRENDER
-	select BR2_PACKAGE_XLIB_LIBXT
-	select BR2_PACKAGE_XLIB_LIBXTST
+	select BR2_PACKAGE_XLIB_LIBXRANDR if BR2_PACKAGE_XORG7
+	select BR2_PACKAGE_XLIB_LIBXRENDER if BR2_PACKAGE_XORG7
+	select BR2_PACKAGE_XLIB_LIBXT if BR2_PACKAGE_XORG7
+	select BR2_PACKAGE_XLIB_LIBXTST if BR2_PACKAGE_XORG7
 	select BR2_PACKAGE_ZLIB
 	help
 	  OpenJDK is a free and open-source implementation of the
@@ -71,6 +70,12 @@ config BR2_PACKAGE_OPENJDK_VERSION_21
 
 endchoice
 
+config BR2_PACKAGE_OPENJDK_HEADLESS
+	bool "Headless mode"
+	default y if !BR2_PACKAGE_XORG7
+	help
+	  Compile JDK without AWT support.
+
 config BR2_PACKAGE_OPENJDK_FULL_JDK
 	bool "Build the full JDK"
 	help
@@ -155,12 +160,6 @@ config BR2_PACKAGE_OPENJDK_JVM_VARIANT_ZERO
 endchoice
 endif
 
-comment "openjdk needs X.Org"
-	depends on BR2_PACKAGE_OPENJDK_ARCH_SUPPORTS
-	depends on BR2_PACKAGE_HOST_OPENJDK_BIN_ARCH_SUPPORTS
-	depends on BR2_USE_MMU
-	depends on !BR2_PACKAGE_XORG7
-
 comment "openjdk needs glibc, and a toolchain w/ wchar, dynamic library, threads, C++, gcc >= 4.9, host gcc >= 4.9"
 	depends on BR2_USE_MMU
 	depends on BR2_PACKAGE_OPENJDK_ARCH_SUPPORTS
diff --git a/package/openjdk/openjdk.mk b/package/openjdk/openjdk.mk
index 6868ca191d..c4436ae4d4 100644
--- a/package/openjdk/openjdk.mk
+++ b/package/openjdk/openjdk.mk
@@ -21,7 +21,7 @@ OPENJDK_LICENSE = GPL-2.0+ with exception
 OPENJDK_LICENSE_FILES = LICENSE
 OPENJDK_INSTALL_STAGING = YES
 
-# OpenJDK requires Alsa, cups, and X11 even for a headless build.
+# OpenJDK requires Alsa and cups,
 # host-zip is needed for the zip executable.
 OPENJDK_DEPENDENCIES = \
 	host-gawk \
@@ -37,10 +37,6 @@ OPENJDK_DEPENDENCIES = \
 	lcms2 \
 	libpng \
 	libusb \
-	xlib_libXrandr \
-	xlib_libXrender \
-	xlib_libXt \
-	xlib_libXtst \
 	zlib
 
 # JVM variants
@@ -88,7 +84,6 @@ OPENJDK_CONF_OPTS = \
 	--disable-full-docs \
 	--disable-manpages \
 	--disable-warnings-as-errors \
-	--enable-headless-only \
 	--enable-openjdk-only \
 	--enable-unlimited-crypto \
 	--openjdk-target=$(GNU_TARGET_NAME) \
@@ -112,6 +107,13 @@ OPENJDK_CONF_OPTS = \
 	--with-version-build="$(OPENJDK_VERSION_BUILD)" \
 	--with-version-string="$(OPENJDK_VERSION_MAJOR).$(OPENJDK_VERSION_MINOR)"
 
+ifeq ($(BR2_PACKAGE_OPENJDK_HEADLESS),y)
+OPENJDK_CONF_OPTS += --enable-headless-only
+else
+OPENJDK_CONF_OPTS += --disable-headless-only
+OPENJDK_DEPENDENCIES += xlib_libXrandr xlib_libXrender xlib_libXt xlib_libXtst
+endif
+
 # If building for AArch64, use the provided CPU port.
 ifeq ($(BR2_aarch64),y)
 OPENJDK_CONF_OPTS += --with-abi-profile=aarch64
-- 
2.43.0

_______________________________________________
buildroot mailing list
buildroot@buildroot.org
https://lists.buildroot.org/mailman/listinfo/buildroot

[Buildroot] [PATCH v3] package/openjdk: allow compiling without X11 support

[Thomas Devoogdt]

From: Thomas Devoogdt <thomas.devoogdt@barco.com>

Added patches (17.0.12+7 and 21.0.4+7) to allow compilation
without X11 support.

0003-autoconf-libraries-drop-the-need-for-X11-in-headless.patch
is only needed for 21.0.4+7, 17.0.12+7 has already this commit:
https://github.com/openjdk/jdk17u/commit/f97ec359ec688346956c29002edb28703d3ba032

Next to that, add a new option BR2_PACKAGE_OPENJDK_X11,
to allow compilation with both head and headless support.

This commit also fixes the wrong patch folders which
should have been fixed in commit 475c79d
"package/openjdk{-bin}: bump versions to 17.0.12+7 and 21.0.4+7"

Signed-off-by: Thomas Devoogdt <thomas.devoogdt@barco.com>
---
v3: Changed BR2_PACKAGE_OPENJDK_HEADLESS to BR2_PACKAGE_OPENJDK_X11, to avoid
    any negation in the options. By this a better comment is possible.
---
 ...ARCv2-ISA-processors-support-to-Zero.patch | 18 ++--
 ...fix-HEADLESS-compilation-without-X11.patch | 83 +++++++++++++++++++
 ...ARCv2-ISA-processors-support-to-Zero.patch | 20 ++---
 ...fix-HEADLESS-compilation-without-X11.patch | 83 +++++++++++++++++++
 ...es-drop-the-need-for-X11-in-headless.patch | 35 ++++++++
 package/openjdk/Config.in                     | 22 ++---
 package/openjdk/openjdk.mk                    | 14 ++--
 7 files changed, 238 insertions(+), 37 deletions(-)
 rename package/openjdk/{17.0.9+9 => 17.0.12+7}/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch (87%)
 create mode 100644 package/openjdk/17.0.12+7/0002-awt-fix-HEADLESS-compilation-without-X11.patch
 rename package/openjdk/{21.0.1+12 => 21.0.4+7}/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch (88%)
 create mode 100644 package/openjdk/21.0.4+7/0002-awt-fix-HEADLESS-compilation-without-X11.patch
 create mode 100644 package/openjdk/21.0.4+7/0003-autoconf-libraries-drop-the-need-for-X11-in-headless.patch

diff --git a/package/openjdk/17.0.9+9/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch b/package/openjdk/17.0.12+7/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch
similarity index 87%
rename from package/openjdk/17.0.9+9/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch
rename to package/openjdk/17.0.12+7/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch
index afec2772c0..c4dda78fde 100644
--- a/package/openjdk/17.0.9+9/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch
+++ b/package/openjdk/17.0.12+7/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch
@@ -1,4 +1,4 @@
-From 9a3c2a0714420186ae8d5159d5416c6fa2009ad9 Mon Sep 17 00:00:00 2001
+From edf96f51d2c6d6e7a7762a879b916a5e58d8c23c Mon Sep 17 00:00:00 2001
 From: Alexey Brodkin <abrodkin@synopsys.com>
 Date: Mon, 18 Oct 2021 05:20:05 -0700
 Subject: [PATCH] Add ARCv2 ISA processors support to Zero
@@ -20,11 +20,11 @@ Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
  3 files changed, 23 insertions(+), 1 deletion(-)
 
 diff --git a/make/autoconf/libraries.m4 b/make/autoconf/libraries.m4
-index 5120918aed2..f7a99955874 100644
+index 865feea36d9..30c224e4a99 100644
 --- a/make/autoconf/libraries.m4
 +++ b/make/autoconf/libraries.m4
-@@ -152,6 +152,14 @@ AC_DEFUN_ONCE([LIB_SETUP_LIBRARIES],
-     BASIC_JVM_LIBS="$BASIC_JVM_LIBS -latomic"
+@@ -146,6 +146,14 @@ AC_DEFUN_ONCE([LIB_SETUP_LIBRARIES],
+     fi
    fi
  
 +  # Libatomic library
@@ -39,7 +39,7 @@ index 5120918aed2..f7a99955874 100644
    if test "x$OPENJDK_TARGET_OS" = xaix; then
      BASIC_JVM_LIBS="$BASIC_JVM_LIBS -lperfstat"
 diff --git a/make/autoconf/platform.m4 b/make/autoconf/platform.m4
-index c0f2446dbd7..dc416ece885 100644
+index eb66266262b..3ca94b351b2 100644
 --- a/make/autoconf/platform.m4
 +++ b/make/autoconf/platform.m4
 @@ -54,6 +54,12 @@ AC_DEFUN([PLATFORM_EXTRACT_VARS_FROM_CPU],
@@ -65,7 +65,7 @@ index c0f2446dbd7..dc416ece885 100644
      HOTSPOT_$1_CPU_DEFINE=SPARC
    elif test "x$OPENJDK_$1_CPU" = xppc; then
 diff --git a/src/hotspot/os/linux/os_linux.cpp b/src/hotspot/os/linux/os_linux.cpp
-index b08caf4d5d3..2bf084895ba 100644
+index 63b7562f118..58b43241df4 100644
 --- a/src/hotspot/os/linux/os_linux.cpp
 +++ b/src/hotspot/os/linux/os_linux.cpp
 @@ -1721,6 +1721,9 @@ void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
@@ -99,11 +99,11 @@ index b08caf4d5d3..2bf084895ba 100644
    static  Elf32_Half running_arch_code=EM_LOONGARCH;
  #else
      #error Method os::dll_load requires that one of following is defined:\
--        AARCH64, ALPHA, ARM, AMD64, IA32, IA64, LOONGARCH, M68K, MIPS, MIPSEL, PARISC, __powerpc__, __powerpc64__, RISCV, S390, SH, __sparc
-+        AARCH64, ALPHA, ARC, ARM, AMD64, IA32, IA64, LOONGARCH, M68K, MIPS, MIPSEL, PARISC, __powerpc__, __powerpc64__, RISCV, S390, SH, __sparc
+-        AARCH64, ALPHA, ARM, AMD64, IA32, IA64, LOONGARCH64, M68K, MIPS, MIPSEL, PARISC, __powerpc__, __powerpc64__, RISCV, S390, SH, __sparc
++        AARCH64, ALPHA, ARC, ARM, AMD64, IA32, IA64, LOONGARCH64, M68K, MIPS, MIPSEL, PARISC, __powerpc__, __powerpc64__, RISCV, S390, SH, __sparc
  #endif
  
    // Identify compatibility class for VM's architecture and library's architecture
 -- 
-2.16.2
+2.43.0
 
diff --git a/package/openjdk/17.0.12+7/0002-awt-fix-HEADLESS-compilation-without-X11.patch b/package/openjdk/17.0.12+7/0002-awt-fix-HEADLESS-compilation-without-X11.patch
new file mode 100644
index 0000000000..183f667dea
--- /dev/null
+++ b/package/openjdk/17.0.12+7/0002-awt-fix-HEADLESS-compilation-without-X11.patch
@@ -0,0 +1,83 @@
+From 8df09bb41f8aec8904a2231facc76660d2a83236 Mon Sep 17 00:00:00 2001
+From: Thomas Devoogdt <thomas@devoogdt.com>
+Date: Thu, 13 Nov 2025 17:23:44 +0100
+Subject: [PATCH] awt: fix HEADLESS compilation without X11
+
+Upstream: https://github.com/openjdk/jdk/pull/28310
+Signed-off-by: Thomas Devoogdt <thomas@devoogdt.com>
+---
+ make/modules/java.desktop/lib/Awt2dLibraries.gmk | 16 ++++++++++++++--
+ .../unix/native/common/awt/utility/rect.h        |  4 ++--
+ 2 files changed, 16 insertions(+), 4 deletions(-)
+
+diff --git a/make/modules/java.desktop/lib/Awt2dLibraries.gmk b/make/modules/java.desktop/lib/Awt2dLibraries.gmk
+index 46e3b1677f7..0e92ce6aeca 100644
+--- a/make/modules/java.desktop/lib/Awt2dLibraries.gmk
++++ b/make/modules/java.desktop/lib/Awt2dLibraries.gmk
+@@ -77,6 +77,10 @@ ifeq ($(call isTargetOs, windows), true)
+       #
+ endif
+ 
++ifeq ($(ENABLE_HEADLESS_ONLY), true)
++  LIBAWT_CFLAGS += -DHEADLESS
++endif
++
+ ifeq ($(call isTargetOs, linux macosx aix), true)
+   LIBAWT_EXFILES += awt_Font.c CUPSfuncs.c fontpath.c X11Color.c
+ endif
+@@ -362,13 +366,20 @@ ifeq ($(call isTargetOs, windows macosx), false)
+       $(TOPDIR)/src/$(MODULE)/$(OPENJDK_TARGET_OS_TYPE)/native/common/awt \
+       #
+ 
+-  LIBAWT_HEADLESS_EXCLUDES := medialib
++  LIBAWT_HEADLESS_EXCLUDES := medialib opengl
++
++  LIBAWT_HEADLESS_EXCLUDE_FILES := \
++      GLXGraphicsConfig.c \
++      GLXSurfaceData.c \
++      X11PMBlitLoops.c \
++      X11Renderer.c \
++      X11SurfaceData.c \
++      #
+ 
+   LIBAWT_HEADLESS_EXTRA_HEADER_DIRS := \
+       $(LIBAWT_DEFAULT_HEADER_DIRS) \
+       common/awt/debug \
+       common/font \
+-      common/java2d/opengl \
+       #
+ 
+   LIBAWT_HEADLESS_CFLAGS := $(CUPS_CFLAGS) $(FONTCONFIG_CFLAGS) $(X_CFLAGS) \
+@@ -378,6 +389,7 @@ ifeq ($(call isTargetOs, windows macosx), false)
+       NAME := awt_headless, \
+       EXTRA_SRC := $(LIBAWT_HEADLESS_EXTRA_SRC), \
+       EXCLUDES := $(LIBAWT_HEADLESS_EXCLUDES), \
++      EXCLUDE_FILES := $(LIBAWT_HEADLESS_EXCLUDE_FILES), \
+       OPTIMIZATION := LOW, \
+       CFLAGS := $(CFLAGS_JDKLIB) \
+           $(LIBAWT_HEADLESS_CFLAGS), \
+diff --git a/src/java.desktop/unix/native/common/awt/utility/rect.h b/src/java.desktop/unix/native/common/awt/utility/rect.h
+index ceea38f4349..91b5a17ec58 100644
+--- a/src/java.desktop/unix/native/common/awt/utility/rect.h
++++ b/src/java.desktop/unix/native/common/awt/utility/rect.h
+@@ -28,7 +28,7 @@
+ #ifndef _AWT_RECT_H
+ #define _AWT_RECT_H
+ 
+-#ifndef MACOSX
++#if !defined(HEADLESS) && !defined(MACOSX)
+ #include <X11/Xlib.h>
+ typedef XRectangle RECT_T;
+ #else
+@@ -39,7 +39,7 @@ typedef struct {
+     int width;
+     int height;
+ } RECT_T;
+-#endif /* !MACOSX */
++#endif /* !HEADLESS && !MACOSX */
+ 
+ #define RECT_EQ_X(r1,r2)        ((r1).x==(r2).x && (r1).width==(r2).width)
+ 
+-- 
+2.43.0
+
diff --git a/package/openjdk/21.0.1+12/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch b/package/openjdk/21.0.4+7/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch
similarity index 88%
rename from package/openjdk/21.0.1+12/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch
rename to package/openjdk/21.0.4+7/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch
index 6c46ec7b42..89ec2996d3 100644
--- a/package/openjdk/21.0.1+12/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch
+++ b/package/openjdk/21.0.4+7/0001-Add-ARCv2-ISA-processors-support-to-Zero.patch
@@ -1,4 +1,4 @@
-From 9a3c2a0714420186ae8d5159d5416c6fa2009ad9 Mon Sep 17 00:00:00 2001
+From c990ac56c441682b65a3dc699a753e1d924b40d1 Mon Sep 17 00:00:00 2001
 From: Alexey Brodkin <abrodkin@synopsys.com>
 Date: Mon, 18 Oct 2021 05:20:05 -0700
 Subject: [PATCH] Add ARCv2 ISA processors support to Zero
@@ -20,10 +20,10 @@ Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
  3 files changed, 23 insertions(+), 1 deletion(-)
 
 diff --git a/make/autoconf/libraries.m4 b/make/autoconf/libraries.m4
-index 5120918aed2..f7a99955874 100644
+index 51d4f724c33..41844933a14 100644
 --- a/make/autoconf/libraries.m4
 +++ b/make/autoconf/libraries.m4
-@@ -163,6 +163,14 @@ AC_DEFUN_ONCE([LIB_SETUP_LIBRARIES],
+@@ -157,6 +157,14 @@ AC_DEFUN_ONCE([LIB_SETUP_LIBRARIES],
      BASIC_JVM_LIBS="$BASIC_JVM_LIBS -lrt"
    fi
  
@@ -39,7 +39,7 @@ index 5120918aed2..f7a99955874 100644
    if test "x$OPENJDK_TARGET_OS" = xaix; then
      BASIC_JVM_LIBS="$BASIC_JVM_LIBS -lperfstat"
 diff --git a/make/autoconf/platform.m4 b/make/autoconf/platform.m4
-index c0f2446dbd7..dc416ece885 100644
+index df610cc489b..2e21572ba4d 100644
 --- a/make/autoconf/platform.m4
 +++ b/make/autoconf/platform.m4
 @@ -54,6 +54,12 @@ AC_DEFUN([PLATFORM_EXTRACT_VARS_FROM_CPU],
@@ -65,10 +65,10 @@ index c0f2446dbd7..dc416ece885 100644
      HOTSPOT_$1_CPU_DEFINE=SPARC
    elif test "x$OPENJDK_$1_CPU" = xppc; then
 diff --git a/src/hotspot/os/linux/os_linux.cpp b/src/hotspot/os/linux/os_linux.cpp
-index b08caf4d5d3..2bf084895ba 100644
+index 492300a37d4..3a10790f4a0 100644
 --- a/src/hotspot/os/linux/os_linux.cpp
 +++ b/src/hotspot/os/linux/os_linux.cpp
-@@ -1653,6 +1653,9 @@ void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
+@@ -1663,6 +1663,9 @@ void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
  #ifndef EM_AARCH64
    #define EM_AARCH64    183               /* ARM AARCH64 */
  #endif
@@ -78,7 +78,7 @@ index b08caf4d5d3..2bf084895ba 100644
  #ifndef EM_RISCV
    #define EM_RISCV      243               /* RISC-V */
  #endif
-@@ -1677,6 +1680,7 @@ void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
+@@ -1687,6 +1690,7 @@ void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
      {EM_SH,          EM_SH,      ELFCLASS32, ELFDATA2MSB, (char*)"SuperH BE"},
  #endif
      {EM_ARM,         EM_ARM,     ELFCLASS32, ELFDATA2LSB, (char*)"ARM"},
@@ -86,7 +86,7 @@ index b08caf4d5d3..2bf084895ba 100644
      // we only support 64 bit z architecture
      {EM_S390,        EM_S390,    ELFCLASS64, ELFDATA2MSB, (char*)"IBM System/390"},
      {EM_ALPHA,       EM_ALPHA,   ELFCLASS64, ELFDATA2LSB, (char*)"Alpha"},
-@@ -1709,6 +1713,8 @@ void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
+@@ -1719,6 +1723,8 @@ void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
    static  Elf32_Half running_arch_code=EM_PPC;
  #elif  (defined AARCH64)
    static  Elf32_Half running_arch_code=EM_AARCH64;
@@ -95,7 +95,7 @@ index b08caf4d5d3..2bf084895ba 100644
  #elif  (defined ARM)
    static  Elf32_Half running_arch_code=EM_ARM;
  #elif  (defined S390)
-@@ -1731,7 +1737,7 @@ void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
+@@ -1741,7 +1747,7 @@ void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
    static  Elf32_Half running_arch_code=EM_LOONGARCH;
  #else
      #error Method os::dll_load requires that one of following is defined:\
@@ -105,5 +105,5 @@ index b08caf4d5d3..2bf084895ba 100644
  
    // Identify compatibility class for VM's architecture and library's architecture
 -- 
-2.16.2
+2.43.0
 
diff --git a/package/openjdk/21.0.4+7/0002-awt-fix-HEADLESS-compilation-without-X11.patch b/package/openjdk/21.0.4+7/0002-awt-fix-HEADLESS-compilation-without-X11.patch
new file mode 100644
index 0000000000..5bb59a0bdd
--- /dev/null
+++ b/package/openjdk/21.0.4+7/0002-awt-fix-HEADLESS-compilation-without-X11.patch
@@ -0,0 +1,83 @@
+From 13a908b3d192e477b7572b522837efd771f5e2f9 Mon Sep 17 00:00:00 2001
+From: Thomas Devoogdt <thomas@devoogdt.com>
+Date: Thu, 13 Nov 2025 17:23:44 +0100
+Subject: [PATCH] awt: fix HEADLESS compilation without X11
+
+Upstream: https://github.com/openjdk/jdk/pull/28310
+Signed-off-by: Thomas Devoogdt <thomas@devoogdt.com>
+---
+ make/modules/java.desktop/lib/Awt2dLibraries.gmk | 16 ++++++++++++++--
+ .../unix/native/common/awt/utility/rect.h        |  4 ++--
+ 2 files changed, 16 insertions(+), 4 deletions(-)
+
+diff --git a/make/modules/java.desktop/lib/Awt2dLibraries.gmk b/make/modules/java.desktop/lib/Awt2dLibraries.gmk
+index a33f219e83e..de57e88a4ce 100644
+--- a/make/modules/java.desktop/lib/Awt2dLibraries.gmk
++++ b/make/modules/java.desktop/lib/Awt2dLibraries.gmk
+@@ -77,6 +77,10 @@ ifeq ($(call isTargetOs, windows), true)
+       #
+ endif
+ 
++ifeq ($(ENABLE_HEADLESS_ONLY), true)
++  LIBAWT_CFLAGS += -DHEADLESS
++endif
++
+ ifeq ($(call isTargetOs, linux macosx aix), true)
+   LIBAWT_EXFILES += awt_Font.c CUPSfuncs.c fontpath.c X11Color.c
+ endif
+@@ -368,13 +372,20 @@ ifeq ($(call isTargetOs, windows macosx), false)
+       $(TOPDIR)/src/$(MODULE)/$(OPENJDK_TARGET_OS_TYPE)/native/common/awt \
+       #
+ 
+-  LIBAWT_HEADLESS_EXCLUDES := medialib
++  LIBAWT_HEADLESS_EXCLUDES := medialib opengl
++
++  LIBAWT_HEADLESS_EXCLUDE_FILES := \
++      GLXGraphicsConfig.c \
++      GLXSurfaceData.c \
++      X11PMBlitLoops.c \
++      X11Renderer.c \
++      X11SurfaceData.c \
++      #
+ 
+   LIBAWT_HEADLESS_EXTRA_HEADER_DIRS := \
+       $(LIBAWT_DEFAULT_HEADER_DIRS) \
+       common/awt/debug \
+       common/font \
+-      common/java2d/opengl \
+       #
+ 
+   LIBAWT_HEADLESS_CFLAGS := $(CUPS_CFLAGS) $(FONTCONFIG_CFLAGS) $(X_CFLAGS) \
+@@ -384,6 +395,7 @@ ifeq ($(call isTargetOs, windows macosx), false)
+       NAME := awt_headless, \
+       EXTRA_SRC := $(LIBAWT_HEADLESS_EXTRA_SRC), \
+       EXCLUDES := $(LIBAWT_HEADLESS_EXCLUDES), \
++      EXCLUDE_FILES := $(LIBAWT_HEADLESS_EXCLUDE_FILES), \
+       OPTIMIZATION := LOW, \
+       CFLAGS := $(CFLAGS_JDKLIB) \
+           $(LIBAWT_HEADLESS_CFLAGS), \
+diff --git a/src/java.desktop/unix/native/common/awt/utility/rect.h b/src/java.desktop/unix/native/common/awt/utility/rect.h
+index ceea38f4349..91b5a17ec58 100644
+--- a/src/java.desktop/unix/native/common/awt/utility/rect.h
++++ b/src/java.desktop/unix/native/common/awt/utility/rect.h
+@@ -28,7 +28,7 @@
+ #ifndef _AWT_RECT_H
+ #define _AWT_RECT_H
+ 
+-#ifndef MACOSX
++#if !defined(HEADLESS) && !defined(MACOSX)
+ #include <X11/Xlib.h>
+ typedef XRectangle RECT_T;
+ #else
+@@ -39,7 +39,7 @@ typedef struct {
+     int width;
+     int height;
+ } RECT_T;
+-#endif /* !MACOSX */
++#endif /* !HEADLESS && !MACOSX */
+ 
+ #define RECT_EQ_X(r1,r2)        ((r1).x==(r2).x && (r1).width==(r2).width)
+ 
+-- 
+2.43.0
+
diff --git a/package/openjdk/21.0.4+7/0003-autoconf-libraries-drop-the-need-for-X11-in-headless.patch b/package/openjdk/21.0.4+7/0003-autoconf-libraries-drop-the-need-for-X11-in-headless.patch
new file mode 100644
index 0000000000..bb182fa2b9
--- /dev/null
+++ b/package/openjdk/21.0.4+7/0003-autoconf-libraries-drop-the-need-for-X11-in-headless.patch
@@ -0,0 +1,35 @@
+From 46b9a0ad24f7f299ff23e13bc8ef01c188d246b6 Mon Sep 17 00:00:00 2001
+From: Thomas Devoogdt <thomas@devoogdt.com>
+Date: Thu, 13 Nov 2025 23:10:20 +0100
+Subject: [PATCH] autoconf: libraries: drop the need for X11 in headless mode
+
+Upstream: https://github.com/openjdk/jdk/pull/28310
+Signed-off-by: Thomas Devoogdt <thomas@devoogdt.com>
+---
+ make/autoconf/libraries.m4 | 8 ++++----
+ 1 file changed, 4 insertions(+), 4 deletions(-)
+
+diff --git a/make/autoconf/libraries.m4 b/make/autoconf/libraries.m4
+index 51d4f724c33..6a8b925c3f2 100644
+--- a/make/autoconf/libraries.m4
++++ b/make/autoconf/libraries.m4
+@@ -42,12 +42,12 @@ m4_include([lib-tests.m4])
+ AC_DEFUN_ONCE([LIB_DETERMINE_DEPENDENCIES],
+ [
+   # Check if X11 is needed
+-  if test "x$OPENJDK_TARGET_OS" = xwindows || test "x$OPENJDK_TARGET_OS" = xmacosx; then
+-    # No X11 support on windows or macosx
++  if test "x$OPENJDK_TARGET_OS" = xwindows ||
++     test "x$OPENJDK_TARGET_OS" = xmacosx ||
++     test "x$ENABLE_HEADLESS_ONLY" = xtrue; then
+     NEEDS_LIB_X11=false
+   else
+-    # All other instances need X11, even if building headless only, libawt still
+-    # needs X11 headers.
++    # All other instances need X11 for libawt.
+     NEEDS_LIB_X11=true
+   fi
+ 
+-- 
+2.43.0
+
diff --git a/package/openjdk/Config.in b/package/openjdk/Config.in
index 78775370ca..7f29e7a489 100644
--- a/package/openjdk/Config.in
+++ b/package/openjdk/Config.in
@@ -29,7 +29,6 @@ config BR2_PACKAGE_OPENJDK
 	depends on BR2_HOST_GCC_AT_LEAST_4_9 # C++14
 	depends on BR2_TOOLCHAIN_USES_GLIBC
 	depends on BR2_USE_MMU # cups
-	depends on BR2_PACKAGE_XORG7
 	select BR2_PACKAGE_ALSA_LIB
 	select BR2_PACKAGE_ALSA_LIB_MIXER
 	select BR2_PACKAGE_ALSA_LIB_PCM
@@ -42,10 +41,6 @@ config BR2_PACKAGE_OPENJDK
 	select BR2_PACKAGE_LCMS2
 	select BR2_PACKAGE_LIBPNG
 	select BR2_PACKAGE_LIBUSB
-	select BR2_PACKAGE_XLIB_LIBXRANDR
-	select BR2_PACKAGE_XLIB_LIBXRENDER
-	select BR2_PACKAGE_XLIB_LIBXT
-	select BR2_PACKAGE_XLIB_LIBXTST
 	select BR2_PACKAGE_ZLIB
 	help
 	  OpenJDK is a free and open-source implementation of the
@@ -71,6 +66,17 @@ config BR2_PACKAGE_OPENJDK_VERSION_21
 
 endchoice
 
+config BR2_PACKAGE_OPENJDK_X11
+	bool "Build with AWT head support"
+	depends on BR2_PACKAGE_XORG7
+	select BR2_PACKAGE_XLIB_LIBXRANDR
+	select BR2_PACKAGE_XLIB_LIBXRENDER
+	select BR2_PACKAGE_XLIB_LIBXT
+	select BR2_PACKAGE_XLIB_LIBXTST
+
+comment "openjdk AWT head support needs X.org"
+	depends on !BR2_PACKAGE_XORG7
+
 config BR2_PACKAGE_OPENJDK_FULL_JDK
 	bool "Build the full JDK"
 	help
@@ -155,12 +161,6 @@ config BR2_PACKAGE_OPENJDK_JVM_VARIANT_ZERO
 endchoice
 endif
 
-comment "openjdk needs X.Org"
-	depends on BR2_PACKAGE_OPENJDK_ARCH_SUPPORTS
-	depends on BR2_PACKAGE_HOST_OPENJDK_BIN_ARCH_SUPPORTS
-	depends on BR2_USE_MMU
-	depends on !BR2_PACKAGE_XORG7
-
 comment "openjdk needs glibc, and a toolchain w/ wchar, dynamic library, threads, C++, gcc >= 4.9, host gcc >= 4.9"
 	depends on BR2_USE_MMU
 	depends on BR2_PACKAGE_OPENJDK_ARCH_SUPPORTS
diff --git a/package/openjdk/openjdk.mk b/package/openjdk/openjdk.mk
index 6868ca191d..58b266c4e9 100644
--- a/package/openjdk/openjdk.mk
+++ b/package/openjdk/openjdk.mk
@@ -21,8 +21,6 @@ OPENJDK_LICENSE = GPL-2.0+ with exception
 OPENJDK_LICENSE_FILES = LICENSE
 OPENJDK_INSTALL_STAGING = YES
 
-# OpenJDK requires Alsa, cups, and X11 even for a headless build.
-# host-zip is needed for the zip executable.
 OPENJDK_DEPENDENCIES = \
 	host-gawk \
 	host-openjdk-bin \
@@ -37,10 +35,6 @@ OPENJDK_DEPENDENCIES = \
 	lcms2 \
 	libpng \
 	libusb \
-	xlib_libXrandr \
-	xlib_libXrender \
-	xlib_libXt \
-	xlib_libXtst \
 	zlib
 
 # JVM variants
@@ -88,7 +82,6 @@ OPENJDK_CONF_OPTS = \
 	--disable-full-docs \
 	--disable-manpages \
 	--disable-warnings-as-errors \
-	--enable-headless-only \
 	--enable-openjdk-only \
 	--enable-unlimited-crypto \
 	--openjdk-target=$(GNU_TARGET_NAME) \
@@ -112,6 +105,13 @@ OPENJDK_CONF_OPTS = \
 	--with-version-build="$(OPENJDK_VERSION_BUILD)" \
 	--with-version-string="$(OPENJDK_VERSION_MAJOR).$(OPENJDK_VERSION_MINOR)"
 
+ifeq ($(BR2_PACKAGE_OPENJDK_X11),y)
+OPENJDK_CONF_OPTS += --disable-headless-only
+OPENJDK_DEPENDENCIES += xlib_libXrandr xlib_libXrender xlib_libXt xlib_libXtst
+else
+OPENJDK_CONF_OPTS += --enable-headless-only
+endif
+
 # If building for AArch64, use the provided CPU port.
 ifeq ($(BR2_aarch64),y)
 OPENJDK_CONF_OPTS += --with-abi-profile=aarch64
-- 
2.43.0

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Re: [Buildroot] [PATCH v3] package/openjdk: allow compiling without X11 support

[Thomas Petazzoni via buildroot]

Hello Thomas,

Thanks for your patch!

On Sat, 15 Nov 2025 16:40:30 +0100
Thomas Devoogdt <thomas@devoogdt.com> wrote:

> From: Thomas Devoogdt <thomas.devoogdt@barco.com>
> 
> Added patches (17.0.12+7 and 21.0.4+7) to allow compilation
> without X11 support.
> 
> 0003-autoconf-libraries-drop-the-need-for-X11-in-headless.patch
> is only needed for 21.0.4+7, 17.0.12+7 has already this commit:
> https://github.com/openjdk/jdk17u/commit/f97ec359ec688346956c29002edb28703d3ba032
> 
> Next to that, add a new option BR2_PACKAGE_OPENJDK_X11,
> to allow compilation with both head and headless support.
> 
> This commit also fixes the wrong patch folders which
> should have been fixed in commit 475c79d
> "package/openjdk{-bin}: bump versions to 17.0.12+7 and 21.0.4+7"

This point should really have been part of a separate commit. Indeed,
this point is a fix for an older commit which is in our LTS branch, so
we will want to backport the fix, but not the "build without X11"
aspect. Generally speaking, don't mix up different "topics" in the same
commit.

So I've split your change into two commits, and applied.

Could you have a look at support/testing/tests/package/test_openjdk.py,
and see if BR2_PACKAGE_XORG7=y can be dropped from the test
configuration?

Thanks a lot!

Thomas
-- 
Thomas Petazzoni, co-owner and CEO, Bootlin
Embedded Linux and Kernel engineering and training
https://bootlin.com
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[Buildroot] [PATCH v1] support/testing/tests/package/test_openjdk: drop the X11 dependency

[Thomas Devoogdt]

Commit 3dd73c3 "package/openjdk: allow compiling without X11 support",
dropped the need for X11, so drop it from TestOpenJdk.

Signed-off-by: Thomas Devoogdt <thomas@devoogdt.com>
---
$ ./support/testing/run-tests -o /home/thomas/br-test/ tests.package.test_openjdk.TestOpenJdk.test_run
09:49:46 TestOpenJdk                              Starting
09:49:48 TestOpenJdk                              Building
10:36:12 TestOpenJdk                              Building done
['Hello, World']
['Test: Get JNI Version passed', 'Test: Read Native String Constant passed', 'Test: Write Java String to Native Library passed', 'Test: Write Java Char Array to Native Library passed', 'Test: Write String Member to Native Library passed', 'Test: Set String Member from Native Library passed', 'Test: Execeute Java Function from Native Library passed', 'Test: Instantiate Java Class passed', 'Test: Call Native Library to Set System Time passed']
10:36:50 TestOpenJdk                              Cleaning up
.
----------------------------------------------------------------------
Ran 1 test in 2850.304s

OK
---
 support/testing/tests/package/test_openjdk.py | 1 -
 1 file changed, 1 deletion(-)

diff --git a/support/testing/tests/package/test_openjdk.py b/support/testing/tests/package/test_openjdk.py
index 26b7f9ee92a..3bf89f9efe3 100644
--- a/support/testing/tests/package/test_openjdk.py
+++ b/support/testing/tests/package/test_openjdk.py
@@ -18,7 +18,6 @@ class TestOpenJdk(infra.basetest.BRTest):
         BR2_LINUX_KERNEL_NEEDS_HOST_OPENSSL=y
         BR2_TARGET_ROOTFS_CPIO=y
         BR2_TARGET_ROOTFS_CPIO_GZIP=y
-        BR2_PACKAGE_XORG7=y
         BR2_PACKAGE_OPENJDK=y
         BR2_PACKAGE_OPENJDK_HELLO_WORLD=y
         BR2_PACKAGE_OPENJDK_JNI_TEST=y
-- 
2.43.0

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Re: [Buildroot] [PATCH v1] support/testing/tests/package/test_openjdk: drop the X11 dependency

[Thomas Petazzoni via buildroot]

On Fri,  2 Jan 2026 19:51:30 +0100
Thomas Devoogdt <thomas@devoogdt.com> wrote:

> Commit 3dd73c3 "package/openjdk: allow compiling without X11 support",
> dropped the need for X11, so drop it from TestOpenJdk.
> 
> Signed-off-by: Thomas Devoogdt <thomas@devoogdt.com>
> ---
> $ ./support/testing/run-tests -o /home/thomas/br-test/ tests.package.test_openjdk.TestOpenJdk.test_run
> 09:49:46 TestOpenJdk                              Starting
> 09:49:48 TestOpenJdk                              Building
> 10:36:12 TestOpenJdk                              Building done
> ['Hello, World']
> ['Test: Get JNI Version passed', 'Test: Read Native String Constant passed', 'Test: Write Java String to Native Library passed', 'Test: Write Java Char Array to Native Library passed', 'Test: Write String Member to Native Library passed', 'Test: Set String Member from Native Library passed', 'Test: Execeute Java Function from Native Library passed', 'Test: Instantiate Java Class passed', 'Test: Call Native Library to Set System Time passed']
> 10:36:50 TestOpenJdk                              Cleaning up
> .
> ----------------------------------------------------------------------
> Ran 1 test in 2850.304s

Applied to master, thanks.

Thomas
-- 
Thomas Petazzoni, CTO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
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