libheif should work in actions now

libaom-dev is required by libheif-dev, but not listed as a dependency

.github/workflows/test.yml

@@ -1,7 +1,6 @@
 name: Test
 
 # to-do:
-#   - libheif is still not being detected
 #   - add a macos test with brew etc.
 #   - build with clang/asan/etc. and run the fuzz tests
 
@@ -47,6 +46,8 @@ jobs:
                 libpng-dev
                 libwebp-dev
                 libtiff5-dev
+                # required by libheif-dev in the ppa, but not listed
+                libaom-dev
                 libheif-dev
                 libexpat1-dev
                 libcfitsio-dev
@@ -64,11 +65,6 @@ jobs:
                 libopenslide-dev
                 libffi-dev
 
-      - name: List installed packages 
-        run: |
-                pkg-config --list-all
-                echo -n "libheif: "; pkg-config libheif --modversion
-
       - name: Configure libvips
         run: CFLAGS=-Wall CXXFLAGS=-Wall ./autogen.sh
             --disable-dependency-tracking

=

@@ -0,0 +1 @@
+libheif 1.3 found

configure.ac

@@ -847,9 +847,6 @@ fi
 AC_ARG_WITH([heif], 
   AS_HELP_STRING([--without-heif], [build without libheif (default: test)]))
 
-echo -n testing for libheif ... pkg-config reports
-pkg-config libheif --modversion
-
 if test x"$with_heif" != x"no"; then
   PKG_CHECK_MODULES(HEIF, libheif >= 1.3.0,
     [with_heif=yes