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meson: use builtin zlib dependency lookup

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Since Meson 0.54.0, `dependency('zlib')` will fallback on systems
without a pkg-config dependency, to a system dependency lookup that
performs the necessary `find_libary('z')` (or MSVC zlib/zlib1) and
`has_header('zlib.h')` checks.

This means all the manual lookups are no longer needed, and a single
dependency lookup covers all cases, and also clarifies the log lookup by
not sometimes listing "not found" a couple times.
This commit is contained in:
Eli Schwartz 2022-05-24 15:22:34 -04:00
parent 587b1559ae
commit c630b4a5bc
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1 changed files with 1 additions and 22 deletions
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@ -2023,28 +2023,7 @@ endif
libm = cc.find_library('m', required : false)
libffi_dep = dependency('libffi', version : '>= 3.0.0', fallback : ['libffi', 'ffi_dep'])
if get_option('wrap_mode') == 'forcefallback'
# Respects "wrap_mode=forcefallback" option
libz_dep = subproject('zlib').get_variable('zlib_dep')
else
# Don't use the bundled ZLib sources until we are sure that we can't find it on
# the system
libz_dep = dependency('zlib', required : false)
endif
if not libz_dep.found()
if cc.get_id() != 'msvc' and cc.get_id() != 'clang-cl'
libz_dep = cc.find_library('z', required : false)
else
libz_dep = cc.find_library('zlib1', required : false)
if not libz_dep.found()
libz_dep = cc.find_library('zlib', required : false)
endif
endif
if not libz_dep.found() or not cc.has_header('zlib.h')
libz_dep = subproject('zlib').get_variable('zlib_dep')
endif
endif
libz_dep = dependency('zlib')
# First check in libc, fallback to libintl, and as last chance build
# proxy-libintl subproject.