c8f2d248f6
This patch updates the generated toolchainfile.cmake to use ccache. When toolchainfile.cmake is used inside Buildroot, using ccache during the build is driven by a CMake knob: USE_CCACHE, automatically set by the cmake-package infrastructure and reflecting the BR2_CCACHE value. Since this toolchainefile.cmake file can be used outside Buildroot, and this file also set a couple of things (among these: the sysroot cflag, some pkg-config environment variables), it is important to set the compiler variables as well to keep the consistency of the cross-compilation configuration. So, when it is used outside Buildroot, using ccache for the build is driven by the ccache program availability. Note that using ccache for the build is achieved by setting the *_ARG1 CMake variables to let CMake use ccache without failing in detecting the compiler. Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net> Signed-off-by: Samuel Martin <s.martin49@gmail.com> Cc: Luca Ceresoli <luca@lucaceresoli.net> Cc: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be> Reviewed-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
57 lines
2.6 KiB
CMake
57 lines
2.6 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" FORCE)
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set(CMAKE_CXX_FLAGS "@@TARGET_CXXFLAGS@@ ${CMAKE_CXX_FLAGS}" CACHE STRING "Buildroot CXXFLAGS" FORCE)
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set(CMAKE_INSTALL_SO_NO_EXE 0)
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set(CMAKE_PROGRAM_PATH "${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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