build: Don't do function checks for subprojectsebassi/for-master

meson can't do function checks for subprojects, since
these have not been built yet at configure time. So,
check if we are in that case and bypass the checks.

The libjpeg we build as a subproject is new enough
to have those functions, anyway.

1 files changed, 7 insertions, 2 deletions

diff --git a/meson.build b/meson.build
index c07e9cb08..06c0d27dc 100644
--- a/meson.build
+++ b/meson.build
@@ -351,8 +351,13 @@ if get_option('jpeg') and not native_windows_loaders
   endif
 
   if jpeg_dep.found()
-    has_destroy_decompress = cc.has_function('jpeg_destroy_decompress', dependencies: jpeg_dep)
-    has_simple_progression = cc.has_function('jpeg_simple_progression', dependencies: jpeg_dep)
+    if jpeg_dep.type_name() == 'internal'
+      has_destroy_decompress = true
+      has_simple_progression = true
+    else
+      has_destroy_decompress = cc.has_function('jpeg_destroy_decompress', dependencies: jpeg_dep)
+      has_simple_progression = cc.has_function('jpeg_simple_progression', dependencies: jpeg_dep)
+    endif
 
     if has_destroy_decompress and has_simple_progression
       gdk_pixbuf_conf.set('HAVE_PROGRESSIVE_JPEG', has_simple_progression)