use pkg-config in exif egg added by gahr on Mon Mar 13 11:42:54 2023

Index: exif/trunk/exif.egg
===================================================================
--- exif/trunk/exif.egg (revision 42405)
+++ exif/trunk/exif.egg (working copy)
@@ -7,4 +7,6 @@
  (license "BSD")
  (dependencies foreigners srfi-13)
  (components
-  (extension exif (csc-options -L -lexif))))
+  (extension exif
+             (csc-options -C "`pkg-config --cflags libexif`")
+             (link-options -L "`pkg-config --libs libexif`"))))