https://gitlab.freedesktop.org/fontconfig/fontconfig/-/commit/ddc50bd6150a34c78fb09468bdee3466383f9119 (earlier version before it had to be rebased for conflicting change on master)
https://gitlab.freedesktop.org/fontconfig/fontconfig/-/merge_requests/383

From ddc50bd6150a34c78fb09468bdee3466383f9119 Mon Sep 17 00:00:00 2001
From: Xi Ruoyao <xry111@xry111.site>
Date: Sat, 12 Apr 2025 17:17:35 +0800
Subject: [PATCH] meson: don't force installation of a static library

We shouldn't install the static library if -D default_library=shared.

Changelog: fixed
Signed-off-by: Xi Ruoyao <xry111@xry111.site>
---
 src/meson.build | 36 +++++++++++++++++++-----------------
 1 file changed, 19 insertions(+), 17 deletions(-)

diff --git a/src/meson.build b/src/meson.build
index 2680c5bf..df68ae46 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -47,28 +47,30 @@ lib_sources = [fc_sources, alias_headers, ft_alias_headers, fclang_h, fccase_h,
 lib_kwargs = {
   'include_directories': incbase,
   'dependencies': [deps, math_dep],
-  'install': true,
 }
 
-if get_option('default_library') in ['both', 'shared']
-  # Define FcPublic appropriately for exports on windows
-  fc_c_shared_args = []
-  if host_machine.system() == 'windows'
-    fc_c_shared_args += '-DFcPublic=__declspec(dllexport)'
-    fc_c_shared_args += '-DDLL_EXPORT'
-  endif
+# Define FcPublic appropriately for exports on windows
+fc_c_shared_args = []
+if host_machine.system() == 'windows'
+  fc_c_shared_args += '-DFcPublic=__declspec(dllexport)'
+  fc_c_shared_args += '-DDLL_EXPORT'
+endif
+
+libfontconfig = library('fontconfig',
+  lib_sources,
+  c_shared_args: fc_c_shared_args,
+  soversion: soversion,
+  version: libversion,
+  darwin_versions: osxversion,
+  install: true,
+  kwargs: lib_kwargs)
 
-  libfontconfig = both_libraries('fontconfig',
-    lib_sources,
-    c_shared_args: fc_c_shared_args,
-    soversion: soversion,
-    version: libversion,
-    darwin_versions: osxversion,
-    kwargs: lib_kwargs)
+if get_option('default_library') == 'both'
   libfontconfig_internal = libfontconfig.get_static_lib()
-else
-  libfontconfig = static_library('fontconfig', lib_sources, kwargs: lib_kwargs)
+elif get_option('default_library') == 'static'
   libfontconfig_internal = libfontconfig
+else
+  libfontconfig_internal = static_library('fontconfig', lib_sources, kwargs: lib_kwargs)
 endif
 
 fontconfig_dep = declare_dependency(link_with: libfontconfig,
-- 
GitLab