From: Bartosz Golaszewski <bartekgola@gmail.com>
Date: Wed, 18 Jan 2017 14:14:36 +0000 (+0100)
Subject: build: don't try to process docs if doxygen is not installed
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=c87228df5ba668326e344c1e2617ec9d20fac89b;p=qemu-gpiodev%2Flibgpiod.git

build: don't try to process docs if doxygen is not installed

Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>
---

diff --git a/Makefile.am b/Makefile.am
index ad9589e..b56fed6 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -9,6 +9,10 @@
 AUTOMAKE_OPTIONS = foreign
 SUBDIRS = include src
 
+if HAS_DOXYGEN
+
 doc:
 	@(cat Doxyfile; echo PROJECT_NUMBER = $(VERSION_STR)) | doxygen -
 .PHONY: doc
+
+endif
diff --git a/configure.ac b/configure.ac
index 853c380..3ee698e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -61,6 +61,13 @@ AC_CHECK_HEADERS([dirent.h], [], [AC_MSG_ERROR([dirent.h header not found])])
 AC_CHECK_HEADERS([linux/gpio.h], [], [AC_MSG_ERROR([linux/gpio.h header not found])])
 AC_CHECK_HEADERS([sys/signalfd.h], [], [AC_MSG_ERROR([sys/signalfd.h header not found])])
 
+AC_CHECK_PROG([has_doxygen], [doxygen], [true], [false])
+AM_CONDITIONAL([HAS_DOXYGEN], [test x$has_doxygen = xtrue])
+if test "x$has_doxygen" = xfalse
+then
+	AC_MSG_NOTICE([doxygen not found - documentation cannot be generated])
+fi
+
 AC_CONFIG_FILES([Makefile
 		 include/Makefile
 		 src/Makefile