[Buildroot] [PATCH v4] package/gdb: fix shared-only build

[Romain Naour]

The shared build only of gdb is actually not supported.

When --disable-static is given to the gdb's main configure script,
it also disable the static build of bundled libraries like bfd, readline
and opcodes, which must be build statically.

Force the static build of bundled libraries by adding --enable-static in
GDB_CONF_OPTS.

Fixes:
http://autobuild.buildroot.net/results/219/21979e730dca1fce5bdda9a4c7fad4485e788866/
http://autobuild.buildroot.net/results/c10/c1096d0bd22de5c6feba848f743601ad0416a944/
http://autobuild.buildroot.net/results/d8a/d8a5bcc7fa374fb0c916a9d0f33ef283109cb404/
http://autobuild.buildroot.net/results/22a/22a86d0f1df0fc4698c0f734f3d659e6317404a4/
http://autobuild.buildroot.net/results/404/404e61e5c30040ee5756f4b5839149dca38660d4/

And many more.

Signed-off-by: Romain Naour <romain.naour at openwide.fr>
---
v4: Fix typos (ThomasP)
v3: Add a comment in gdb.mk (ThomasP)
v2: D'ont patch gdb, just enable static build.
---
 package/gdb/gdb.mk | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/package/gdb/gdb.mk b/package/gdb/gdb.mk
index dbec760..aa22193 100644
--- a/package/gdb/gdb.mk
+++ b/package/gdb/gdb.mk
@@ -74,6 +74,8 @@ GDB_CONF_ENV = \
 	bash_cv_have_mbstate_t=yes \
 	gdb_cv_func_sigsetjmp=yes
 
+# The shared only build is not supported by gdb, so enable static build for
+# build-in libraries with --enable-static.
 GDB_CONF_OPTS = \
 	--without-uiout \
 	--disable-gdbtk \
@@ -83,7 +85,8 @@ GDB_CONF_OPTS = \
 	$(if $(BR2_PACKAGE_GDB_SERVER),--enable-gdbserver) \
 	--with-curses \
 	--without-included-gettext \
-	--disable-werror
+	--disable-werror \
+	--enable-static
 
 ifeq ($(BR2_PACKAGE_GDB_TUI),y)
 	GDB_CONF_OPTS += --enable-tui
-- 
1.9.3