47544e43a5
Fix #7280 [1] When the FORCE option is passed to the set command, the variable is added/updated in the CMake cache every single time CMake processes this command. Because the toolchainfile.cmake prepends architecture/toolchain flags to the CMAKE_{C,CXX}_FLAGS, this makes the CFLAGS being updated in the generated Makefiles each time one reconfigures its project. So it forces the compilation of everything, even when nothing has changed. [1] https://bugs.busybox.net/show_bug.cgi?id=7280 Signed-off-by: Samuel Martin <s.martin49@gmail.com> Tested-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com> (tested the SimpleApp reproduction scenario described in the bug report) Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
58 lines
2.7 KiB
CMake
58 lines
2.7 KiB
CMake
#
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# Automatically generated file; DO NOT EDIT.
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# CMake toolchain file for Buildroot
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#
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# In order to allow the toolchain to be relocated, we calculate the
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# HOST_DIR based on this file's location: $(HOST_DIR)/usr/share/buildroot
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# and store it in RELOCATED_HOST_DIR.
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# All the other variables that need to refer to HOST_DIR will use the
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# RELOCATED_HOST_DIR variable.
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string(REPLACE "/usr/share/buildroot" "" RELOCATED_HOST_DIR ${CMAKE_CURRENT_LIST_DIR})
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set(CMAKE_SYSTEM_NAME Linux)
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set(CMAKE_C_FLAGS "@@TARGET_CFLAGS@@ ${CMAKE_C_FLAGS}" CACHE STRING "Buildroot CFLAGS")
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set(CMAKE_CXX_FLAGS "@@TARGET_CXXFLAGS@@ ${CMAKE_CXX_FLAGS}" CACHE STRING "Buildroot CXXFLAGS")
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set(CMAKE_EXE_LINKER_FLAGS "@@TARGET_LDFLAGS@@ ${CMAKE_EXE_LINKER_FLAGS}" CACHE STRING "Buildroot LDFLAGS")
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set(CMAKE_INSTALL_SO_NO_EXE 0)
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set(CMAKE_PROGRAM_PATH "${RELOCATED_HOST_DIR}/usr/bin")
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set(CMAKE_FIND_ROOT_PATH "${RELOCATED_HOST_DIR}/@@STAGING_SUBDIR@@")
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set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
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set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
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set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
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set(ENV{PKG_CONFIG_SYSROOT_DIR} "${RELOCATED_HOST_DIR}/@@STAGING_SUBDIR@@")
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# This toolchain file can be used both inside and outside Buildroot.
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# * When used inside Buildroot, ccache support is explicitly driven using the
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# USE_CCACHE variable.
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# * When used outside Buildroot (i.e. when USE_CCACHE is not defined), ccache
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# support is automatically enabled if the ccache program is available.
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if(DEFINED USE_CCACHE)
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if(USE_CCACHE)
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set(CMAKE_ASM_COMPILER "${RELOCATED_HOST_DIR}/@@TARGET_CC_NOCCACHE@@")
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set(CMAKE_C_COMPILER "${RELOCATED_HOST_DIR}/usr/bin/ccache")
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set(CMAKE_CXX_COMPILER "${RELOCATED_HOST_DIR}/usr/bin/ccache")
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set(CMAKE_C_COMPILER_ARG1 "${RELOCATED_HOST_DIR}/@@TARGET_CC_NOCCACHE@@")
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set(CMAKE_CXX_COMPILER_ARG1 "${RELOCATED_HOST_DIR}/@@TARGET_CXX_NOCCACHE@@")
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else()
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set(CMAKE_C_COMPILER "${RELOCATED_HOST_DIR}/@@TARGET_CC_NOCCACHE@@")
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set(CMAKE_CXX_COMPILER "${RELOCATED_HOST_DIR}/@@TARGET_CXX_NOCCACHE@@")
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endif()
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else()
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find_program(CCACHE ccache HINTS "${RELOCATED_HOST_DIR}/usr/bin")
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if(CCACHE)
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set(CMAKE_ASM_COMPILER "${RELOCATED_HOST_DIR}/@@TARGET_CC_NOCCACHE@@")
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set(CMAKE_C_COMPILER "${CCACHE}")
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set(CMAKE_CXX_COMPILER "${CCACHE}")
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set(CMAKE_C_COMPILER_ARG1 "${RELOCATED_HOST_DIR}/@@TARGET_CC_NOCCACHE@@")
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set(CMAKE_CXX_COMPILER_ARG1 "${RELOCATED_HOST_DIR}/@@TARGET_CXX_NOCCACHE@@")
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message(STATUS "ccache program has been found and will be used for the build.")
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message(STATUS " To disable ccache, add -DUSE_CCACHE=OFF on the cmake command line.")
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else()
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set(CMAKE_C_COMPILER "${RELOCATED_HOST_DIR}/@@TARGET_CC_NOCCACHE@@")
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set(CMAKE_CXX_COMPILER "${RELOCATED_HOST_DIR}/@@TARGET_CXX_NOCCACHE@@")
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endif()
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endif()
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