On 8/23/17 12:26 AM, [email protected] wrote: > From: Ming Liu <[email protected]> > > 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.
I have applied it. But does this happen when you use gcc7 for gcc as well ? > > Signed-off-by: Ming Liu <[email protected]> > --- > 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 \ > -- _______________________________________________ Openembedded-devel mailing list [email protected] http://lists.openembedded.org/mailman/listinfo/openembedded-devel
