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py/mkrules.cmake: Support passing CFLAGS_EXTRA in environment variable.

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This works similarly to the existing support in "bare metal" make ports,
with the caveat that CMake will only set this value on a clean build and
will reuse the previous value otherwise.

This is slightly different to the CMake built-in support for CFLAGS,
as this variable is used when evaluating source files for qstr
generation, etc.

This work was funded through GitHub Sponsors.

Signed-off-by: Angus Gratton <angus@redyak.com.au>
This commit is contained in:
Angus Gratton 2025-02-11 17:44:19 +11:00
parent 71df9d0636
commit 516709be88
1 changed files with 9 additions and 0 deletions
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9
py/mkrules.cmake
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@ -53,6 +53,15 @@ foreach(_arg ${MICROPY_CPP_DEF})
endforeach()
list(APPEND MICROPY_CPP_FLAGS ${MICROPY_CPP_FLAGS_EXTRA})
# Include anything passed in via CFLAGS_EXTRA
# in both MICROPY_CPP_FLAGS and CMAKE_C_FLAGS
if(DEFINED ENV{CFLAGS_EXTRA})
set(CFLAGS_EXTRA $ENV{CFLAGS_EXTRA})
string(APPEND CMAKE_C_FLAGS " ${CFLAGS_EXTRA}") # ... not a list
separate_arguments(CFLAGS_EXTRA)
list(APPEND MICROPY_CPP_FLAGS ${CFLAGS_EXTRA}) # ... a list
endif()
find_package(Python3 REQUIRED COMPONENTS Interpreter)
target_sources(${MICROPY_TARGET} PRIVATE