[configure.in] Generate a cairo-no-features.h with macros for disabled supported backends

to trick gtk-doc with it.

3 files changed, 36 insertions, 5 deletions

diff --git a/configure.in b/configure.in
index 66ec5699..96712536 100644
--- a/configure.in
+++ b/configure.in
@@ -983,7 +983,7 @@ _EOF
 	for FEATURE in $CAIRO_FEATURES; do
 		echo "#define CAIRO_HAS_$FEATURE 1" >> $outfile
 	done
-	echo >> $outfile
+	echo '' >> $outfile
 	for FEATURE in $CAIRO_NO_FEATURES; do
 		echo "/* #undef CAIRO_HAS_$FEATURE */" >> $outfile
 	done
@@ -1004,6 +1004,37 @@ _EOF
 	CAIRO_VERSION_MINOR=$CAIRO_VERSION_MINOR
 	CAIRO_VERSION_MICRO=$CAIRO_VERSION_MICRO
 ])
+AC_CONFIG_COMMANDS([src/cairo-no-features.h],
+[
+	nofeaturesfile=src/cairo-no-features.h
+	outfile=$nofeaturesfile.tmp
+	AC_MSG_NOTICE([creating $nofeaturesfile])
+	cat > $outfile <<_EOF
+/* Generated by configure.  Do not edit */
+#ifndef CAIRO_NO_FEATURES_H
+#define CAIRO_NO_FEATURES_H
+
+#include <cairo-features.h>
+
+/* This is a dummy header, to trick gtk-doc only */
+
+_EOF
+	for FEATURE in $CAIRO_NO_FEATURES; do
+		echo "#define CAIRO_HAS_$FEATURE 1" >> $outfile
+	done
+
+	echo '' >> $outfile
+	echo '#endif' >> $outfile
+
+	if cmp -s $outfile $nofeaturesfile; then
+	  AC_MSG_NOTICE([$nofeaturesfile is unchanged])
+	  rm -f $outfile
+	else
+	  mv $outfile $nofeaturesfile
+	fi
+],[
+	CAIRO_NO_FEATURES='$CAIRO_NO_FEATURES'
+])
 AC_CONFIG_FILES([
 Makefile
 boilerplate/Makefile
diff --git a/src/Makefile.am b/src/Makefile.am
index c1a2361e..e908b9b8 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -289,9 +289,9 @@ $(backend_pkgconfigs): $(top_srcdir)/configure
 $(top_builddir)/config.h: $(top_srcdir)/config.h.in
 	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) config.h
 
-DISTCLEANFILES += cairo-features.h
-cairo-features.h:
-	cd $(top_builddir) && ./config.status src/cairo-features.h
+DISTCLEANFILES += cairo-features.h cairo-no-features.h
+cairo-features.h cairo-no-features.h:
+	cd $(top_builddir) && ./config.status src/$@
 
 CLEANFILES = cairo.def
 cairo.def: $(cairo_headers) cairo-features.h
diff --git a/src/check-headers.sh b/src/check-headers.sh
index 2ac74fd2..4792b2db 100755
--- a/src/check-headers.sh
+++ b/src/check-headers.sh
@@ -7,7 +7,7 @@ status=0
 
 echo Checking public headers for missing cairo_public decorators
 
-find "$srcdir" -name '*.h' ! -name '*-private.h' ! -name '*-test.h' ! -name 'cairoint.h' |
+find "$srcdir" -name '*.h' ! -name '*-private.h' ! -name '*-test.h' ! -name 'cairoint.h' ! -name 'cairo-no-features.h' |
 xargs grep -B 1 '^cairo_.*[ 	]\+(' |
 awk '
 /^--$/ { context=""; public=0; next; }