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meson: Make room for C++-only warning flags for MSVC

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Refactor the MSVC warning option handling to have a list of common
flags and lists of flags specific to C and C++.

Reviewed-by: Jelte Fennema-Nio <postgres@jeltef.nl>
Discussion: https://www.postgresql.org/message-id/flat/CAGECzQR21OnnKiZO_1rLWO0-16kg1JBxnVq-wymYW0-_1cUNtg%40mail.gmail.com
This commit is contained in:
Peter Eisentraut 2026-03-31 08:38:24 +02:00
parent 2da86c1ef9
commit 4c83f12535
1 changed files with 24 additions and 9 deletions
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meson.build
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@ -2297,27 +2297,42 @@ endforeach
if cc.get_id() == 'msvc'
cflags_warn += [
msvc_common_warning_flags = [
# Disable warnings in system headers
'/external:anglebrackets',
'/external:W0',
# Warnings to disable:
# from /W2:
'/wd4244', # conversion from 'type1' to 'type2', possible loss of data
# Additional warnings to enable:
'/w24062', # enumerator 'identifier' in switch of enum 'enumeration' is not handled [like -Wswitch]
'/w24102', # unreferenced label [like -Wunused-label]
]
msvc_c_warning_flags = [
# Warnings to disable:
# from /W1:
'/wd4090', # different 'modifier' qualifiers
# from /W2:
'/wd4244', # conversion from 'type1' to 'type2', possible loss of data
# from /W3:
'/wd4018', # signed/unsigned mismatch
'/wd4101', # unreferenced local variable [like -Wunused-variable, but there is no "unused" attribute, so too noisy]
'/wd4267', # conversion from 'size_t' to 'type', possible loss of data
# Additional warnings to enable:
'/w24062', # enumerator 'identifier' in switch of enum 'enumeration' is not handled [like -Wswitch]
'/w24102', # unreferenced label [like -Wunused-label]
'/w24255', # 'function' : no function prototype given: converting '()' to '(void)' [like -Wstrict-prototypes]
# Disable warnings in system headers
'/external:anglebrackets',
'/external:W0',
]
msvc_cxx_warning_flags = [
]
cflags_warn += msvc_common_warning_flags
cflags_warn += msvc_c_warning_flags
cxxflags_warn += msvc_common_warning_flags
cxxflags_warn += msvc_cxx_warning_flags
cppflags += [
'/DWIN32',
'/DWINDOWS',