Re: [PATCH v5] meson: work around broken system PCRE2 dependency in macOS

On 7/16/25 3:30 PM, Carlo Marcelo Arenas Belón wrote:

+if pcre2.found() and pcre2.type_name() != 'internal' and host_machine.system() == 'darwin'
+  # macOS installs a broken system package, double check
+  if not compiler.has_header('pcre2.h', dependencies: pcre2)
+    if pcre2_feature.enabled()
+      # Attempt to fallback, method can't be pkg-config 
+      pcre2 = dependency('libpcre2-8', method: 'builtin', default_options: ['default_library=static', 'test=false'])
+      if not pcre2.found()
+        error('only a broken pcre2 install found and pcre2 is required')

If you want to override the message from a specific dependency() call,
"required" defaults to true and aborts on the line before
"if not pcre2.found()"


You could do:
https://mesonbuild.com/Reference-manual_functions.html#dependency_not_found_message


not_found_message: 'only a broken pcre2 install found and pcre2 is required'

Alternatively, required: false followed by if not pcre2.found() -->
error(). But you will need "allow_fallback: true" as I responded in a
previous message.


-- 
Eli Schwartz