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From: Vladimir Serbinenko <phcoder@gmail.com>
To: grub-devel@gnu.org
Cc: Vladimir Serbinenko <phcoder@gmail.com>
Subject: [PATCH v2 4/7] configure: Add -mno-gpopt option
Date: Tue,  3 Sep 2024 20:58:49 +0300	[thread overview]
Message-ID: <20240903175852.27019-4-phcoder@gmail.com> (raw)
In-Reply-To: <20240903175852.27019-1-phcoder@gmail.com>

Without it compiler generates GPREL16 references which do not work
with our memory layout

Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
---
 configure.ac | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/configure.ac b/configure.ac
index fe5493246..c3d9398ab 100644
--- a/configure.ac
+++ b/configure.ac
@@ -802,9 +802,21 @@ if test "x$target_cpu" = xmips || test "x$target_cpu" = xmipsel ; then
   if test "x$grub_cv_cc_mflush_func" = xyes; then
     TARGET_CFLAGS="$TARGET_CFLAGS -mflush-func=grub_red_herring"
   fi
+
+  AC_CACHE_CHECK([whether -mno-gpopt works], [grub_cv_cc_mno_gpopt], [
+    CFLAGS="$TARGET_CFLAGS -mno-gpopt -Werror"
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
+        [grub_cv_cc_mno_gpopt=yes],
+	[grub_cv_cc_mno_gpopt=no])
+  ])
+
+  if test "x$grub_cv_cc_mno_gpopt" = xyes; then
+    TARGET_CFLAGS="$TARGET_CFLAGS -mno-gpopt"
+  fi
 fi
 
 
+
 # Force no alignment to save space on i386.
 if test "x$target_cpu" = xi386; then
   TARGET_CFLAGS="$TARGET_CFLAGS -falign-functions=1"
-- 
2.39.2


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  parent reply	other threads:[~2024-09-03 18:00 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-09-03 17:58 [PATCH v2 1/7] configure: Look for .otf fonts Vladimir Serbinenko
2024-09-03 17:58 ` [PATCH v2 2/7] erofs: Replace 64-bit modulo with bitwise operations Vladimir Serbinenko
2024-09-03 17:58 ` [PATCH v2 3/7] xzembed: Silence warning when no BCJ is available Vladimir Serbinenko
2024-09-03 17:58 ` Vladimir Serbinenko [this message]
2024-09-03 17:58 ` [PATCH v2 5/7] gentpl: Put startup_raw.S into beginning of the image Vladimir Serbinenko
2024-09-03 17:58 ` [PATCH v2 6/7] offsets: Set mod_align to 4 on mips Vladimir Serbinenko
2024-09-03 17:58 ` [PATCH v2 7/7] mkimage: Explicitly move modules to __bss_start Vladimir Serbinenko

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