[Buildroot] [git commit] package/llvm: remove $ORIGIN/../lib from RPATH
Thomas Petazzoni
thomas.petazzoni at bootlin.com
Thu Apr 12 19:12:51 UTC 2018
commit: https://git.buildroot.net/buildroot/commit/?id=4f9e3989f3c736d9792e942fcf0f22b2e8210d00
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/master
AddLLVM.cmake adds $ORIGIN/../lib to the RPATH of llvm binaries. This
causes a problem when llvm-config built for the host, installed in
STAGING_DIR, is executed under the following conditions:
* Target architecture same as host architecture (normally x86_64)
* Target's libc different from host's libc (normally glibc)
llvm-config will try to link with the target's libc, resulting in:
./llvm-config: error while loading shared libraries: libc.so.0: cannot open shared object file: No such file or directory.
To avoid this, we simply add pass
-DCMAKE_INSTALL_RPATH="$(HOST_DIR)/lib" in HOST_LLVM_CONF_OPTS.
Link to discussion:
http://lists.busybox.net/pipermail/buildroot/2018-April/218627.html
Fixes:
http://autobuild.buildroot.net/results/b81c12d529c66a028e2297ea5ce1d6930324fa69/
Signed-off-by: Valentin Korenblit <valentin.korenblit at smile.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
---
package/llvm/llvm.mk | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/package/llvm/llvm.mk b/package/llvm/llvm.mk
index 9c8bf5c820..de2ca38da1 100644
--- a/package/llvm/llvm.mk
+++ b/package/llvm/llvm.mk
@@ -25,6 +25,11 @@ LLVM_CONF_OPTS += -DLLVM_ENABLE_PROJECTS=""
HOST_LLVM_CONF_OPTS += -DLLVM_CCACHE_BUILD=$(if $(BR2_CCACHE),ON,OFF)
LLVM_CONF_OPTS += -DLLVM_CCACHE_BUILD=$(if $(BR2_CCACHE),ON,OFF)
+# This option prevents AddLLVM.cmake from adding $ORIGIN/../lib to
+# binaries. Otherwise, llvm-config (host variant installed in STAGING)
+# will try to use target's libc.
+HOST_LLVM_CONF_OPTS += -DCMAKE_INSTALL_RPATH="$(HOST_DIR)/lib"
+
# Disable experimental Global Instruction Selection support.
# https://llvm.org/docs/GlobalISel.html
HOST_LLVM_CONF_OPTS += -DLLVM_BUILD_GLOBAL_ISEL=OFF
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