[Mesa-dev] [PATCH WIP 1/1] configure: include llvm systemlibs when using static llvm

[Jan Vesely]

-Wl,--exclude-libs prevents automatic export of symbols


CC: Kai Wasserbach <kai at dev.carbon-project.org>
CC: Emil Velikov <emil.l.velikov at gmail.com>
Signed-off-by: Jan Vesely <jan.vesely at rutgers.edu>
---

Kai,
can you try this patch with your setup, and check whether LLVM symbols are
exported from mesa library? (and it's still working)

Emil,
would it help to have --exclude-libs ALL enabled globally?

jan

 configure.ac | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 3c76deb..b4b4b13 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1981,7 +1981,15 @@ if test "x$MESA_LLVM" != x0; then
            dnl already added all of these objects to LLVM_LIBS.
         fi
     else
-        AC_MSG_WARN([Building mesa with staticly linked LLVM may cause compilation issues])
+        AC_MSG_WARN([Building mesa with statically linked LLVM may cause compilation issues])
+	dnl Don't export symbols automatically
+	dnl TODO: Do we want to list llvm libs explicitly here?
+	LLVM_LDFLAGS+=" -Wl,exclude-libs ALL"
+	dnl We need to link to llvm system libs when using static libs
+	dnl However, only llvm 3.5+ provides --system-libs
+	if test $LLVM_VERSION_MAJOR -eq 3 -a $LLVM_VERSION_MINOR -ge 5; then
+		LLVM_LIBS+=" `$LLVM_CONFIG --system-libs`"
+	fi
     fi
 fi
 
-- 
1.9.3