From b175971f8087d38c003bac67bbd2c535e807d415 Mon Sep 17 00:00:00 2001
From: Martijn van Beurden <mvanb1@gmail.com>
Date: Sun, 18 Sep 2022 20:09:48 +0200
Subject: Include api dir in distribution

Also, don't create empty Doxygen tag and api directory
---
 .github/workflows/action.yml |  2 +-
 configure.ac                 |  6 ++++++
 doc/Makefile.am              | 33 +++++++++++++++++++++++++++------
 3 files changed, 34 insertions(+), 7 deletions(-)

diff --git a/.github/workflows/action.yml b/.github/workflows/action.yml
index 6bbbaf44..dd11c1a2 100644
--- a/.github/workflows/action.yml
+++ b/.github/workflows/action.yml
@@ -142,7 +142,7 @@ jobs:
         if: startsWith(matrix.os,'ubuntu')
         run: |
           sudo apt-get update
-          sudo apt-get install -y libtool-bin libogg-dev doxygen libxml2-utils w3c-sgml-lib
+          sudo apt-get install -y libtool-bin libogg-dev
 
       - name: Install Windows dependencies
         if: startsWith(matrix.os,'windows')
diff --git a/configure.ac b/configure.ac
index d0f29e05..50f19efc 100644
--- a/configure.ac
+++ b/configure.ac
@@ -375,6 +375,12 @@ if test "x$enable_doxygen_docs" != xfalse ; then
 fi
 AM_CONDITIONAL(FLaC__HAS_DOXYGEN, test -n "$DOXYGEN")
 
+if test  "x$DOXYGEN" = "x"; then
+	AC_CHECK_FILE($srcdir/doc/FLAC.tag,[HAVE_PREBUILT_FLAC_TAG=yes])
+	AC_CHECK_FILE($srcdir/doc/api/modules.html,[HAVE_PREBUILT_API_DIR=yes])
+fi
+AM_CONDITIONAL(FLaC__HAS_PREBUILT_DOXYGEN, test "x$HAVE_PREBUILD_FLAG_TAG$HAVEPREBUILD_API_DIR" = "xyesyes")
+
 AC_ARG_ENABLE(local-xmms-plugin,
 AS_HELP_STRING([--enable-local-xmms-plugin],[Install XMMS plugin to ~/.xmms/Plugins instead of system location]),
 [case "${enableval}" in
diff --git a/doc/Makefile.am b/doc/Makefile.am
index cb0df6f8..593d691b 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -25,17 +25,38 @@ FLAC.tag: Doxyfile
 	rm -rf api
 	mv doxytmp/html api
 	rm -rf doxytmp
-else
-FLAC.tag:
-	touch $@
-	mkdir -p api
-endif
 
 doc_DATA = \
 	FLAC.tag
+else
+if FLaC__HAS_PREBUILT_DOXYGEN
+doc_DATA = \
+	FLAC.tag
+endif
+endif
 
 EXTRA_DIST = Doxyfile.in doxygen.footer.html \
-	isoflac.txt $(doc_DATA) CMakeLists.txt
+	isoflac.txt $(doc_DATA) CMakeLists.txt \
+	api
 
+if FLaC__HAS_DOXYGEN
+# The install targets don't copy whole directories so we have to
+# handle 'api/' specially:
+install-data-local:
+	$(mkinstalldirs) $(DESTDIR)$(docdir)/api
+	(cd $(builddir)/api && $(INSTALL_DATA) * $(DESTDIR)$(docdir)/api)
+uninstall-local:
+	rm -rf $(DESTDIR)$(docdir)/api
 distclean-local:
 	rm -rf FLAC.tag api doxytmp
+endif
+
+if FLaC__HAS_PREBUILT_DOXYGEN
+# The install targets don't copy whole directories so we have to
+# handle 'api/' specially:
+install-data-local:
+	$(mkinstalldirs) $(DESTDIR)$(docdir)/api
+	(cd $(builddir)/api && $(INSTALL_DATA) * $(DESTDIR)$(docdir)/api)
+uninstall-local:
+	rm -rf $(DESTDIR)$(docdir)/api
+endif
-- 
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