Automate building of doc both from GIT and dist tarball

From both GIT and dist tarball:

- Build html and man automatically if enabled and doxygen is available
- Install html and man if enabled and built successfully, skip otherwise

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>

3 files changed, 13 insertions, 0 deletions

diff --git a/configure.ac b/configure.ac
index a7e5f97..83dd967 100644
--- a/configure.ac
+++ b/configure.ac
@@ -165,6 +165,7 @@ DX_MAN_FEATURE(ON)
 DX_INIT_DOXYGEN(${PACKAGE_NAME}, [${top_builddir}/Doxyfile], [doc])
 AM_CONDITIONAL(ENABLE_DOXYGEN,[test "x${DX_FLAG_doc}" = x1])
 AM_CONDITIONAL(ENABLE_HTML,[test "x${DX_FLAG_html}" = x1])
+AM_CONDITIONAL(ENABLE_MAN,[test "x${DX_FLAG_man}" = x1])
 
 # Check for sample building
 AC_MSG_CHECKING([whether to build sample programs])
diff --git a/doc/Makefile.am b/doc/Makefile.am
index 255c143..203497e 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -7,6 +7,11 @@ DISTCLEANFILES = libnet.tag
 if ENABLE_HTML
 pkgdata_DATA   = html/*
 
+all-local: doc
+
 clean-local:
 	-rm -rf html
+
+doc:
+	$(MAKE) -C @top_builddir@ $@
 endif
diff --git a/doc/man/man3/Makefile.am b/doc/man/man3/Makefile.am
index c5902f6..39ba9c8 100644
--- a/doc/man/man3/Makefile.am
+++ b/doc/man/man3/Makefile.am
@@ -3,3 +3,10 @@ man3_MANS      = $(srcdir)/libnet.3           \
                  $(srcdir)/libnet-macros.3
 DISTCLEANFILES = libnet.3 libnet-functions.3 libnet-macros.3
 EXTRA_DIST     = $(man3_MANS)
+
+if ENABLE_MAN
+$(man3_MANS): doc
+
+doc:
+	$(MAKE) -C @top_builddir@ $@
+endif