[Buildroot] [PATCH 1/2] package/gdb: handle lzma option for host-gdb

[Thomas Petazzoni via buildroot <buildroot@buildroot.org>]

For target gdb, we properly enable/disable lzma support depending on
BR2_PACKAGE_XZ.

However, for host-gdb we don't do anything, which can lead the gdb
configure script to detect and use a system-provided xz library, which
is not desired.

Instead, add an explicit option BR2_PACKAGE_HOST_GDB_LZMA, which when
enabled pulls in host-xz, but also when disabled ensures gdb doesn't
try to use a system-provided xz library.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
---
 package/gdb/Config.in.host | 5 +++++
 package/gdb/gdb.mk         | 8 ++++++++
 2 files changed, 13 insertions(+)

diff --git a/package/gdb/Config.in.host b/package/gdb/Config.in.host
index 2e1eed6f50..823c2e9966 100644
--- a/package/gdb/Config.in.host
+++ b/package/gdb/Config.in.host
@@ -44,6 +44,11 @@ config BR2_PACKAGE_HOST_GDB_SIM
 	help
 	  This option enables the simulator support in the cross gdb.
 
+config BR2_PACKAGE_HOST_GDB_LZMA
+	bool "lzma support"
+	help
+	  This option enables lzma support in the cross gdb.
+
 choice
 	prompt "GDB debugger Version"
 	default BR2_GDB_VERSION_16
diff --git a/package/gdb/gdb.mk b/package/gdb/gdb.mk
index 685d1fe992..ebb80072cf 100644
--- a/package/gdb/gdb.mk
+++ b/package/gdb/gdb.mk
@@ -293,6 +293,14 @@ else
 HOST_GDB_CONF_OPTS += --disable-sim
 endif
 
+ifeq ($(BR2_PACKAGE_HOST_GDB_LZMA),y)
+HOST_GDB_CONF_OPTS += --with-lzma
+HOST_GDB_CONF_OPTS += --with-liblzma-prefix=$(HOST_DIR)
+HOST_GDB_DEPENDENCIES += host-xz
+else
+HOST_GDB_CONF_OPTS += --without-lzma
+endif
+
 # Since gdb 9, in-tree builds for GDB are not allowed anymore,
 # so we create a 'build' subdirectory in the gdb sources, and
 # build from there.
-- 
2.55.0

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