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BLD: mingw-w64 build fixes #24968

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Merged
merged 2 commits into from
Nov 5, 2023
Merged

BLD: mingw-w64 build fixes #24968

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0453b92
BLD: Skip MSVC compatibility when building against mingw-w64 Python
lazka Oct 20, 2023
9123d43
BLD: Fix mingw detection when building with Clang
lazka Oct 20, 2023
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19 changes: 12 additions & 7 deletions numpy/meson.build
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Original file line number Diff line number Diff line change
Expand Up @@ -10,15 +10,20 @@ endif

# Platform detection
is_windows = host_machine.system() == 'windows'
is_mingw = is_windows and cc.get_id() == 'gcc'
is_mingw = is_windows and cc.get_define('__MINGW32__') != ''

if is_mingw
# For mingw-w64, link statically against the UCRT.
gcc_link_args = ['-lucrt', '-static']
add_project_link_arguments(gcc_link_args, language: ['c', 'cpp'])
# Force gcc to float64 long doubles for compatibility with MSVC
# builds, for C only.
add_project_arguments('-mlong-double-64', language: 'c')
is_mingw_built_python = run_command(
py, ['-c', 'import sysconfig; print(sysconfig.get_platform())'],
check: true).stdout().strip().startswith('mingw')
if not is_mingw_built_python
# For mingw-w64, link statically against the UCRT.
gcc_link_args = ['-lucrt', '-static']
add_project_link_arguments(gcc_link_args, language: ['c', 'cpp'])
# Force gcc to float64 long doubles for compatibility with MSVC
# builds, for C only.
add_project_arguments('-mlong-double-64', language: 'c')
endif
# Make fprintf("%zd") work (see https://github.com/rgommers/scipy/issues/118)
add_project_arguments('-D__USE_MINGW_ANSI_STDIO=1', language: ['c', 'cpp'])
endif
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