| Austin Schuh | 208337d | 2022-01-01 14:29:11 -0800 | [diff] [blame^] | 1 | # Toolchain file is processed multiple times, however, it cannot access CMake cache on some runs. |
| 2 | # We store the search path in an environment variable so that we can always access it. |
| 3 | if (NOT "${PICO_TOOLCHAIN_PATH}" STREQUAL "") |
| 4 | set(ENV{PICO_TOOLCHAIN_PATH} "${PICO_TOOLCHAIN_PATH}") |
| 5 | endif () |
| 6 | |
| 7 | # Find the compiler executable and store its path in a cache entry ${compiler_path}. |
| 8 | # If not found, issue a fatal message and stop processing. PICO_TOOLCHAIN_PATH can be provided from |
| 9 | # commandline as additional search path. |
| 10 | function(pico_find_compiler compiler_path compiler_exe) |
| 11 | # Search user provided path first. |
| 12 | find_program( |
| 13 | ${compiler_path} ${compiler_exe} |
| 14 | PATHS ENV PICO_TOOLCHAIN_PATH |
| 15 | PATH_SUFFIXES bin |
| 16 | NO_DEFAULT_PATH |
| 17 | ) |
| 18 | |
| 19 | # If not then search system paths. |
| 20 | if ("${${compiler_path}}" STREQUAL "${compiler_path}-NOTFOUND") |
| 21 | if (DEFINED ENV{PICO_TOOLCHAIN_PATH}) |
| 22 | message(WARNING "PICO_TOOLCHAIN_PATH specified ($ENV{PICO_TOOLCHAIN_PATH}), but ${compiler_exe} not found there") |
| 23 | endif() |
| 24 | find_program(${compiler_path} ${compiler_exe}) |
| 25 | endif () |
| 26 | if ("${${compiler_path}}" STREQUAL "${compiler_path}-NOTFOUND") |
| 27 | set(PICO_TOOLCHAIN_PATH "" CACHE PATH "Path to search for compiler.") |
| 28 | message(FATAL_ERROR "Compiler '${compiler_exe}' not found, you can specify search path with\ |
| 29 | \"PICO_TOOLCHAIN_PATH\".") |
| 30 | endif () |
| 31 | endfunction() |