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package/clang: default linker to the cross GNU

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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@gmail.com>
Reviewed-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Matthew Weber <matthew.weber@rockwellcollins.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This commit is contained in:
Matt Weber 2018-10-21 07:21:35 -05:00 committed by Thomas Petazzoni
parent 6561d925f4
commit c2b0fe80e0
1 changed files with 2 additions and 1 deletions
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3
package/clang/clang.mk
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@ -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