From: Ming Liu <peter.x....@external.atlascopco.com> I could not manage to build nativesdk-clang, I encountered errors as follows: (trimmed for purpose) | ../gcc/x86_64-pokysdk-linux/6.3.0/ld:: | cannot find crt1.o: No such file or directory | cannot find crtbegin.o: No such file or directory | cannot find -lgcc | cannot find -lgcc_s
After some investigation, I found it's caused by the llvm native tools could not compile with crosssdk toolchains. (special linking flags are needed) So we introduce a cmake-native class with a task to generate a native toolchain file, it will be used to build llvm native tools by passed with CROSS_TOOLCHAIN_FLAGS_NATIVE. Signed-off-by: Ming Liu <peter.x....@external.atlascopco.com> --- classes/cmake-native.bbclass | 47 +++++++++++++++++++++++++++++++++++++ recipes-devtools/clang/clang_git.bb | 3 ++- 2 files changed, 49 insertions(+), 1 deletion(-) create mode 100644 classes/cmake-native.bbclass diff --git a/classes/cmake-native.bbclass b/classes/cmake-native.bbclass new file mode 100644 index 0000000..911476e --- /dev/null +++ b/classes/cmake-native.bbclass @@ -0,0 +1,47 @@ +# We need to unset CCACHE otherwise cmake gets too confused +CCACHE = "" + +# Native C/C++ compiler (without cpu arch/tune arguments) +OECMAKE_NATIVE_C_COMPILER ?= "`echo ${BUILD_CC} | sed 's/^\([^ ]*\).*/\1/'`" +OECMAKE_NATIVE_CXX_COMPILER ?= "`echo ${BUILD_CXX} | sed 's/^\([^ ]*\).*/\1/'`" +OECMAKE_NATIVE_AR ?= "${BUILD_AR}" + +# Native compiler flags +OECMAKE_NATIVE_C_FLAGS ?= "${BUILD_CC_ARCH} ${BUILD_CFLAGS}" +OECMAKE_NATIVE_CXX_FLAGS ?= "${BUILD_CC_ARCH} ${BUILD_CXXFLAGS}" +OECMAKE_NATIVE_C_FLAGS_RELEASE ?= "-DNDEBUG" +OECMAKE_NATIVE_CXX_FLAGS_RELEASE ?= "-DNDEBUG" +OECMAKE_NATIVE_C_LINK_FLAGS ?= "${BUILD_CC_ARCH} ${BUILD_CPPFLAGS} ${BUILD_LDFLAGS}" +OECMAKE_NATIVE_CXX_LINK_FLAGS ?= "${BUILD_CC_ARCH} ${BUILD_CXXFLAGS} ${BUILD_LDFLAGS}" +BUILD_CXXFLAGS += "${BUILD_CC_ARCH}" +BUILD_CFLAGS += "${BUILD_CC_ARCH}" + +do_generate_native_toolchain_file() { + cat > ${WORKDIR}/toolchain-native.cmake <<EOF +set( CMAKE_SYSTEM_NAME `echo ${BUILD_OS} | sed -e 's/^./\u&/' -e 's/^\(Linux\).*/\1/'` ) +set( CMAKE_SYSTEM_PROCESSOR ${BUILD_ARCH} ) +set( CMAKE_C_COMPILER ${OECMAKE_NATIVE_C_COMPILER} ) +set( CMAKE_CXX_COMPILER ${OECMAKE_NATIVE_CXX_COMPILER} ) +set( CMAKE_ASM_COMPILER ${OECMAKE_NATIVE_C_COMPILER} ) +set( CMAKE_AR ${OECMAKE_NATIVE_AR} CACHE FILEPATH "Archiver" ) +set( CMAKE_C_FLAGS "${OECMAKE_NATIVE_C_FLAGS}" CACHE STRING "CFLAGS" ) +set( CMAKE_CXX_FLAGS "${OECMAKE_NATIVE_CXX_FLAGS}" CACHE STRING "CXXFLAGS" ) +set( CMAKE_ASM_FLAGS "${OECMAKE_NATIVE_C_FLAGS}" CACHE STRING "ASM FLAGS" ) +set( CMAKE_C_FLAGS_RELEASE "${OECMAKE_NATIVE_C_FLAGS_RELEASE}" CACHE STRING "Additional CFLAGS for release" ) +set( CMAKE_CXX_FLAGS_RELEASE "${OECMAKE_NATIVE_CXX_FLAGS_RELEASE}" CACHE STRING "Additional CXXFLAGS for release" ) +set( CMAKE_ASM_FLAGS_RELEASE "${OECMAKE_NATIVE_C_FLAGS_RELEASE}" CACHE STRING "Additional ASM FLAGS for release" ) +set( CMAKE_C_LINK_FLAGS "${OECMAKE_NATIVE_C_LINK_FLAGS}" CACHE STRING "LDFLAGS" ) +set( CMAKE_CXX_LINK_FLAGS "${OECMAKE_NATIVE_CXX_LINK_FLAGS}" CACHE STRING "LDFLAGS" ) + +set( CMAKE_FIND_ROOT_PATH ${STAGING_DIR_NATIVE} ) +set( CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY ) +set( CMAKE_FIND_ROOT_PATH_MODE_PROGRAM BOTH ) +set( CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY ) +set( CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY ) + +# Use native cmake modules +list(APPEND CMAKE_MODULE_PATH "${STAGING_DATADIR_NATIVE}/cmake/Modules/") +EOF +} + +addtask generate_native_toolchain_file after do_patch before do_configure diff --git a/recipes-devtools/clang/clang_git.bb b/recipes-devtools/clang/clang_git.bb index fb7854c..c226093 100644 --- a/recipes-devtools/clang/clang_git.bb +++ b/recipes-devtools/clang/clang_git.bb @@ -27,7 +27,7 @@ INHIBIT_DEFAULT_DEPS = "1" S = "${WORKDIR}/git" -inherit cmake +inherit cmake cmake-native OECMAKE_FIND_ROOT_PATH_MODE_PROGRAM = "BOTH" @@ -85,6 +85,7 @@ EXTRA_OECMAKE_append_class-native = "\ " EXTRA_OECMAKE_append_class-nativesdk = "\ -DCMAKE_CROSSCOMPILING:BOOL=ON \ + -DCROSS_TOOLCHAIN_FLAGS_NATIVE='-DCMAKE_TOOLCHAIN_FILE=${WORKDIR}/toolchain-native.cmake' \ -DLLVM_TARGETS_TO_BUILD='${LLVM_TARGETS_TO_BUILD}' \ -DLLVM_TABLEGEN=${STAGING_BINDIR_NATIVE}/llvm-tblgen \ -DCLANG_TABLEGEN=${STAGING_BINDIR_NATIVE}/clang-tblgen \ -- 2.7.4 -- _______________________________________________ Openembedded-devel mailing list Openembedded-devel@lists.openembedded.org http://lists.openembedded.org/mailman/listinfo/openembedded-devel