[Buildroot] [git commit] package/clang: default linker to the cross GNU
Thomas Petazzoni
thomas.petazzoni at bootlin.com
Sun Oct 21 14:28:50 UTC 2018
commit: https://git.buildroot.net/buildroot/commit/?id=c2b0fe80e025ebd816cf0447fb11022d3fe57309
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/master
By default clang is assuming the system linker /usr/bin/ld. This
patchset updates the default to point at the cross toolchain ld.
Previously clang had been used on target only, this update is
required for host clang/clang++ to be used as a frontend for
cross-compiling.
Example build command:
output/host/bin/clang++ -mcpu=cortex-a53 \
--sysroot /<abs path>/output/staging/ \
-B /<abs path>/output/host/opt/ext-toolchain/ \
foobar.cc -o foobar
Cc: Valentin Korenblit <valentinkorenblit at gmail.com>
Reviewed-by: Romain Naour <romain.naour at gmail.com>
Signed-off-by: Matthew Weber <matthew.weber at rockwellcollins.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
---
package/clang/clang.mk | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/package/clang/clang.mk b/package/clang/clang.mk
index 52e0b98a76..f9d4ae3713 100644
--- a/package/clang/clang.mk
+++ b/package/clang/clang.mk
@@ -49,7 +49,8 @@ CLANG_CONF_OPTS += \
-DCLANG_INCLUDE_DOCS=OFF \
-DCLANG_INCLUDE_TESTS=OFF
-HOST_CLANG_CONF_OPTS += -DLLVM_CONFIG:FILEPATH=$(HOST_DIR)/bin/llvm-config
+HOST_CLANG_CONF_OPTS += -DLLVM_CONFIG:FILEPATH=$(HOST_DIR)/bin/llvm-config \
+ -DCLANG_DEFAULT_LINKER=$(TARGET_LD)
CLANG_CONF_OPTS += -DLLVM_CONFIG:FILEPATH=$(STAGING_DIR)/usr/bin/llvm-config \
-DCLANG_TABLEGEN:FILEPATH=$(HOST_DIR)/bin/clang-tblgen \
-DLLVM_TABLEGEN_EXE:FILEPATH=$(HOST_DIR)/bin/llvm-tblgen
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