From: Jonathan Gray <jsg@jsg.id.au>
Date: Mon, 1 Sep 2014 16:08:00 +0000 (+1000)
Subject: automake: check if the linker supports --dynamic-list
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=635477dc4b9579dac2fc0fb332dcf2e0e48dd418;p=mesa.git

automake: check if the linker supports --dynamic-list

As older versions of gnu ld did not support --dynamic-list check to see
if it is supported before using it.  Non gnu linkers such the apple one
likely lack this option as well.

Fixes the build on OpenBSD which has binutils 2.15 and 2.17.
The --dynamic-list option seems to been have introduced sometime after
binutils 2.17 was released as it is present in 2.18.

Cc: mesa-stable@lists.freedesktop.org
Signed-off-by: Jonathan Gray <jsg@jsg.id.au>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
---

diff --git a/configure.ac b/configure.ac
index 9d2ddb4ab00..f7525fe77a4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -357,6 +357,24 @@ AC_LINK_IFELSE(
 LDFLAGS=$save_LDFLAGS
 AM_CONDITIONAL(HAVE_LD_VERSION_SCRIPT, test "$have_ld_version_script" = "yes")
 
+dnl
+dnl Check if linker supports dynamic list files
+dnl
+AC_MSG_CHECKING([if the linker supports --dynamic-list])
+save_LDFLAGS=$LDFLAGS
+LDFLAGS="$LDFLAGS -Wl,--dynamic-list=conftest.dyn"
+cat > conftest.dyn <<EOF
+{
+	radeon_drm_winsys_create;
+};
+EOF
+AC_LINK_IFELSE(
+    [AC_LANG_SOURCE([int main() { return 0;}])],
+    [have_ld_dynamic_list=yes;AC_MSG_RESULT(yes)],
+    [have_ld_dynamic_list=no; AC_MSG_RESULT(no)])
+LDFLAGS=$save_LDFLAGS
+AM_CONDITIONAL(HAVE_LD_DYNAMIC_LIST, test "$have_ld_dynamic_list" = "yes")
+
 dnl
 dnl compatibility symlinks
 dnl
diff --git a/src/gallium/targets/dri/Makefile.am b/src/gallium/targets/dri/Makefile.am
index 70b19b8d5e2..1c33a91dff0 100644
--- a/src/gallium/targets/dri/Makefile.am
+++ b/src/gallium/targets/dri/Makefile.am
@@ -26,7 +26,6 @@ gallium_dri_la_LDFLAGS = \
 	-shrext .so \
 	-module \
 	-avoid-version \
-	-Wl,--dynamic-list=$(top_srcdir)/src/gallium/targets/dri-vdpau.dyn \
 	$(GC_SECTIONS)
 
 if HAVE_LD_VERSION_SCRIPT
@@ -34,6 +33,11 @@ gallium_dri_la_LDFLAGS += \
 	-Wl,--version-script=$(top_srcdir)/src/gallium/targets/dri/dri.sym
 endif # HAVE_LD_VERSION_SCRIPT
 
+if HAVE_LD_DYNAMIC_LIST
+gallium_dri_la_LDFLAGS += \
+	-Wl,--dynamic-list=$(top_srcdir)/src/gallium/targets/dri-vdpau.dyn
+endif # HAVE_LD_DYNAMIC_LIST
+
 gallium_dri_la_LIBADD = \
 	$(top_builddir)/src/mesa/libmesagallium.la \
 	$(top_builddir)/src/mesa/drivers/dri/common/libdricommon.la \
diff --git a/src/gallium/targets/vdpau/Makefile.am b/src/gallium/targets/vdpau/Makefile.am
index 6c92cd8603a..440cf2243a4 100644
--- a/src/gallium/targets/vdpau/Makefile.am
+++ b/src/gallium/targets/vdpau/Makefile.am
@@ -15,7 +15,6 @@ libvdpau_gallium_la_LDFLAGS = \
 	-module \
 	-no-undefined \
 	-version-number $(VDPAU_MAJOR):$(VDPAU_MINOR) \
-	-Wl,--dynamic-list=$(top_srcdir)/src/gallium/targets/dri-vdpau.dyn \
 	$(GC_SECTIONS) \
 	$(LD_NO_UNDEFINED)
 
@@ -24,6 +23,11 @@ libvdpau_gallium_la_LDFLAGS += \
 	-Wl,--version-script=$(top_srcdir)/src/gallium/targets/vdpau/vdpau.sym
 endif # HAVE_LD_VERSION_SCRIPT
 
+if HAVE_LD_DYNAMIC_LIST
+libvdpau_gallium_la_LDFLAGS += \
+	-Wl,--dynamic-list=$(top_srcdir)/src/gallium/targets/dri-vdpau.dyn
+endif # HAVE_LD_DYNAMIC_LIST
+
 libvdpau_gallium_la_LIBADD = \
 	$(top_builddir)/src/gallium/state_trackers/vdpau/libvdpautracker.la \
 	$(top_builddir)/src/gallium/auxiliary/libgallium.la \