0e310b4fd0
Starting with CMake 3.4 CMake supports setting a compiler launcher like ccache. The feature is described in https://cmake.org/cmake/help/latest/variable/CMAKE_LANG_COMPILER_LAUNCHER.html This should be safe since everything is built for the host using make or ninja. The use of *_ARG1 is discouraged by the cmake developers https://cmake-developers.cmake.narkive.com/OTa9EKfj/cmake-c-compiler-arg-not-documented . Without this patch I get the following error message with CMake 3.19.1 on Arch Linux. Disabling BR2_CCACHE also resolves the issue. /usr/bin/cmake [~]/buildroot/build/host-lzo-2.10/ -DCMAKE_INSTALL_SO_NO_EXE=0 -DCMAKE_FIND_ROOT_PATH="[...]" -DCMAKE_FIND_ROOT_PATH_MODE_PROGRAM="BOTH" -DCMAKE_FIND_ROOT_P ATH_MODE_LIBRARY="BOTH" -DCMAKE_FIND_ROOT_PATH_MODE_INCLUDE="BOTH" -DCMAKE_INSTALL_PREFIX="[...]" -DCMAKE_C_FLAGS="-O2 -I[...]/include" -DCMAKE_CXX_FLAGS="-O2 -I[...]/include" -DCMAKE_EXE_LINKER_FLAGS="-L[...]/lib -Wl,-rpath,[...]/lib" -DCMAKE_SHARED_LINKER_FLAGS="-L[...]/l ib -Wl,-rpath,[...]/lib" -DCMAKE_ASM_COMPILER="/usr/bin/as" -DCMAKE_C_COMPILER="[...]/bin/ccache" -DCMAKE_CXX_COMPILER="[...]/bin/ccache" -DCMAKE_C_COMPILER_ARG1="/usr/bin/gcc" -DCMAKE_CXX_COMPILER_ARG1="/usr/bin/g++" -DCMAKE_COLOR_MAKEFILE=OFF -DBUILD_DOC=OFF -DBUILD_DOCS=OFF -DBUILD_EXAMPLE=OFF -DBUILD_EXAMPLES=OFF -DBUILD_TEST=OFF -DBUILD_TESTS=OFF -DBUILD_TESTING=O FF -DENABLE_SHARED=ON -DENABLE_STATIC=OFF ) -- The C compiler identification is unknown -- Detecting C compiler ABI info -- Detecting C compiler ABI info - failed -- Check for working C compiler: [...]/bin/ccache -- Check for working C compiler: [...]/bin/ccache - broken CMake Error at /usr/share/cmake-3.19/Modules/CMakeTestCCompiler.cmake:66 (message): The C compiler Signed-off-by: Bernd Amend <bernd.amend@gmail.com> Reviewed-by: Yegor Yefremov <yegorslists@googlemail.com> Tested-by: Christian Stewart <christian@paral.in> Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr> |
||
|---|---|---|
| arch | ||
| board | ||
| boot | ||
| configs | ||
| docs | ||
| fs | ||
| linux | ||
| package | ||
| support | ||
| system | ||
| toolchain | ||
| utils | ||
| .defconfig | ||
| .flake8 | ||
| .gitignore | ||
| .gitlab-ci.yml | ||
| CHANGES | ||
| Config.in | ||
| Config.in.legacy | ||
| COPYING | ||
| DEVELOPERS | ||
| Makefile | ||
| Makefile.legacy | ||
| README | ||
Buildroot is a simple, efficient and easy-to-use tool to generate embedded Linux systems through cross-compilation. The documentation can be found in docs/manual. You can generate a text document with 'make manual-text' and read output/docs/manual/manual.text. Online documentation can be found at http://buildroot.org/docs.html To build and use the buildroot stuff, do the following: 1) run 'make menuconfig' 2) select the target architecture and the packages you wish to compile 3) run 'make' 4) wait while it compiles 5) find the kernel, bootloader, root filesystem, etc. in output/images You do not need to be root to build or run buildroot. Have fun! Buildroot comes with a basic configuration for a number of boards. Run 'make list-defconfigs' to view the list of provided configurations. Please feed suggestions, bug reports, insults, and bribes back to the buildroot mailing list: buildroot@buildroot.org You can also find us on #buildroot on Freenode IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches