32 lines
1.4 KiB
CMake
32 lines
1.4 KiB
CMake
# Toolchain file is processed multiple times, however, it cannot access CMake cache on some runs.
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# We store the search path in an environment variable so that we can always access it.
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if (NOT "${PICO_TOOLCHAIN_PATH}" STREQUAL "")
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set(ENV{PICO_TOOLCHAIN_PATH} "${PICO_TOOLCHAIN_PATH}")
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endif ()
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# Find the compiler executable and store its path in a cache entry ${compiler_path}.
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# If not found, issue a fatal message and stop processing. PICO_TOOLCHAIN_PATH can be provided from
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# commandline as additional search path.
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function(pico_find_compiler compiler_path compiler_exe)
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# Search user provided path first.
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find_program(
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${compiler_path} ${compiler_exe}
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PATHS ENV PICO_TOOLCHAIN_PATH
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PATH_SUFFIXES bin
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NO_DEFAULT_PATH
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)
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# If not then search system paths.
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if ("${${compiler_path}}" STREQUAL "${compiler_path}-NOTFOUND")
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if (DEFINED ENV{PICO_TOOLCHAIN_PATH})
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message(WARNING "PICO_TOOLCHAIN_PATH specified ($ENV{PICO_TOOLCHAIN_PATH}), but ${compiler_exe} not found there")
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endif()
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find_program(${compiler_path} ${compiler_exe})
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endif ()
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if ("${${compiler_path}}" STREQUAL "${compiler_path}-NOTFOUND")
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set(PICO_TOOLCHAIN_PATH "" CACHE PATH "Path to search for compiler.")
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message(FATAL_ERROR "Compiler '${compiler_exe}' not found, you can specify search path with\
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\"PICO_TOOLCHAIN_PATH\".")
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endif ()
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endfunction()
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