[Mesa-dev] [PATCH 1/3] Fix build for darwin

[Jon TURNEY]

Fix build for darwin, when ./configured --disable-driglx-direct

- darwin ld doesn't support -Bsymbolic or --version-script, so check if ld
supports those options before using them
- define GLX_ALIAS_UNSUPPORTED as config/darwin used to, as aliasing of non-weak
symbols isn't supported
- default to -with-dri-drivers=swrast

Signed-off-by: Jon TURNEY <jon.turney at dronecode.org.uk>
---
 configure.ac                     | 36 ++++++++++++++++++++++++++++++++++++
 src/egl/main/Makefile.am         |  2 +-
 src/gallium/Automake.inc         |  8 ++++++++
 src/glx/Makefile.am              |  2 +-
 src/mesa/drivers/dri/Makefile.am |  2 +-
 5 files changed, 47 insertions(+), 3 deletions(-)

diff --git a/configure.ac b/configure.ac
index 99a761a..f571af1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -316,6 +316,22 @@ if test "x$enable_debug" = xyes; then
 fi
 
 dnl
+dnl Check if linker supports -Bsymbolic
+dnl
+save_LDFLAGS=$LDFLAGS
+LDFLAGS="$LDFLAGS -Wl,-Bsymbolic"
+AC_MSG_CHECKING([if ld supports -Bsymbolic])
+AC_LINK_IFELSE(
+    [AC_LANG_SOURCE([int main() { return 0;}])],
+    [AC_MSG_RESULT([yes])
+        BSYMBOLIC="-Bsymbolic";],
+    [AC_MSG_RESULT([no])
+        BSYMBOLIC="";])
+LDFLAGS=$save_LDFLAGS
+
+AC_SUBST([BSYMBOLIC])
+
+dnl
 dnl Check if linker supports garbage collection
 dnl
 save_LDFLAGS=$LDFLAGS
@@ -332,6 +348,20 @@ LDFLAGS=$save_LDFLAGS
 AC_SUBST([GC_SECTIONS])
 
 dnl
+dnl Check if linker supports version scripts
+dnl
+AC_MSG_CHECKING([if libraries can be versioned])
+GLD=`$LD --help < /dev/null 2>/dev/null | grep version-script`
+if test "$GLD"; then
+    have_ld_version_script=yes
+    AC_MSG_RESULT(yes)
+else
+    have_ld_version_script=no
+    AC_MSG_RESULT(no)
+fi
+AM_CONDITIONAL(HAVE_LD_VERSION_SCRIPT, test "$have_ld_version_script" = "yes")
+
+dnl
 dnl compatibility symlinks
 dnl
 case "$host_os" in
@@ -1030,6 +1060,12 @@ if test "x$enable_dri" = xyes; then
             with_dri_drivers="swrast"
         fi
         ;;
+    darwin*)
+        DEFINES="$DEFINES -DUSE_EXTERNAL_DXTN_LIB=1 -DGLX_ALIAS_UNSUPPORTED"
+        if test "x$with_dri_drivers" = "xyes"; then
+            with_dri_drivers="swrast"
+        fi
+        ;;
     esac
 
     # default drivers
diff --git a/src/egl/main/Makefile.am b/src/egl/main/Makefile.am
index 2858913..8b73c8b 100644
--- a/src/egl/main/Makefile.am
+++ b/src/egl/main/Makefile.am
@@ -75,7 +75,7 @@ libEGL_la_LIBADD = \
 libEGL_la_LDFLAGS = \
 	-no-undefined \
 	-version-number 1:0 \
-	-Wl,-Bsymbolic \
+	$(BSYMBOLIC) \
 	$(GC_SECTIONS) \
 	$(LD_NO_UNDEFINED)
 
diff --git a/src/gallium/Automake.inc b/src/gallium/Automake.inc
index 4519c16..70921ec 100644
--- a/src/gallium/Automake.inc
+++ b/src/gallium/Automake.inc
@@ -56,7 +56,9 @@ GALLIUM_DRI_LINKER_FLAGS = \
 	-shrext .so \
 	-module \
 	-avoid-version \
+if HAVE_LD_VERSION_SCRIPT
 	-Wl,--version-script=$(top_srcdir)/src/gallium/targets/dri.sym \
+endif
 	$(GC_SECTIONS)
 
 GALLIUM_VDPAU_LINKER_FLAGS = \
@@ -64,7 +66,9 @@ GALLIUM_VDPAU_LINKER_FLAGS = \
 	-module \
 	-no-undefined \
 	-version-number $(VDPAU_MAJOR):$(VDPAU_MINOR) \
+if HAVE_LD_VERSION_SCRIPT
 	-Wl,--version-script=$(top_srcdir)/src/gallium/targets/vdpau.sym \
+endif
 	$(GC_SECTIONS) \
 	$(LD_NO_UNDEFINED)
 
@@ -73,7 +77,9 @@ GALLIUM_XVMC_LINKER_FLAGS = \
 	-module \
 	-no-undefined \
 	-version-number $(XVMC_MAJOR):$(XVMC_MINOR) \
+if HAVE_LD_VERSION_SCRIPT
 	-Wl,--version-script=$(top_srcdir)/src/gallium/targets/xvmc.sym \
+endif
 	$(GC_SECTIONS) \
 	$(LD_NO_UNDEFINED)
 
@@ -82,7 +88,9 @@ GALLIUM_OMX_LINKER_FLAGS = \
 	-module \
 	-no-undefined \
 	-avoid-version \
+if HAVE_LD_VERSION_SCRIPT
 	-Wl,--version-script=$(top_srcdir)/src/gallium/targets/omx.sym \
+endif
 	$(GC_SECTIONS) \
 	$(LD_NO_UNDEFINED)
 
diff --git a/src/glx/Makefile.am b/src/glx/Makefile.am
index 482d952..0cf65e5 100644
--- a/src/glx/Makefile.am
+++ b/src/glx/Makefile.am
@@ -111,7 +111,7 @@ GL_LIBS = \
 GL_LDFLAGS = \
 	-no-undefined \
 	-version-number 1:2 \
-	-Wl,-Bsymbolic \
+	$(BSYMBOLIC) \
 	$(GC_SECTIONS) \
 	$(LD_NO_UNDEFINED)
 
diff --git a/src/mesa/drivers/dri/Makefile.am b/src/mesa/drivers/dri/Makefile.am
index e807612..70039f9 100644
--- a/src/mesa/drivers/dri/Makefile.am
+++ b/src/mesa/drivers/dri/Makefile.am
@@ -52,7 +52,7 @@ nodist_EXTRA_mesa_dri_drivers_la_SOURCES = dummy.cpp
 mesa_dri_drivers_la_SOURCES =
 mesa_dri_drivers_la_LDFLAGS = \
         -module -avoid-version -shared -shrext .so \
-        -Wl,-Bsymbolic \
+        $(BSYMBOLIC) \
         $(GC_SECTIONS) \
         $()
 mesa_dri_drivers_la_LIBADD = \
-- 
1.8.5.5