[glib: 1/2] meson: use builtin zlib dependency lookup

[Philip Withnall <pwithnall src gnome org>]

commit c630b4a5bcdecaf626f96b1db8c5e9c20f1cc653
Author: Eli Schwartz <eschwartz archlinux org>
Date:   Tue May 24 15:22:34 2022 -0400

    meson: use builtin zlib dependency lookup
    
    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.

 meson.build | 23 +----------------------
 1 file changed, 1 insertion(+), 22 deletions(-)
---
diff --git a/meson.build b/meson.build
index 366f0bf5e9..57a71f7694 100644
--- a/meson.build
+++ b/meson.build
@@ -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.