1dnl AG_GST_INIT
2dnl sets up use of GStreamer configure.ac macros
3dnl all GStreamer autoconf macros are prefixed
4dnl with AG_GST_ for public macros
5dnl with _AG_GST_ for private macros
6dnl
7dnl We call AC_CANONICAL_TARGET and AC_CANONICAL_HOST so that
8dnl it is valid before AC_ARG_PROGRAM is called
9
10AC_DEFUN([AG_GST_INIT],
11[
12  m4_pattern_forbid(^_?AG_GST_)
13  AC_REQUIRE([AC_CANONICAL_HOST]) dnl we use host_ variables
14  AC_REQUIRE([AC_CANONICAL_TARGET]) dnl we use target_ variables
15])
16
17dnl AG_GST_PKG_CONFIG_PATH
18dnl
19dnl sets up a GST_PKG_CONFIG_PATH variable for use in Makefile.am
20dnl which contains the path of the in-tree pkgconfig directory first
21dnl and then any paths specified in PKG_CONFIG_PATH.
22dnl
23dnl We do this mostly so we don't have to use unportable shell constructs
24dnl such as ${PKG_CONFIG_PATH:+:$PKG_CONFIG_PATH} in Makefile.am to handle
25dnl the case where the environment variable is not set, but also in order
26dnl to avoid a trailing ':' in the PKG_CONFIG_PATH which apparently causes
27dnl problems with pkg-config on windows with msys/mingw.
28AC_DEFUN([AG_GST_PKG_CONFIG_PATH],
29[
30  GST_PKG_CONFIG_PATH="\$(top_builddir)/pkgconfig"
31  if test "x$PKG_CONFIG_PATH" != "x"; then
32    GST_PKG_CONFIG_PATH="$GST_PKG_CONFIG_PATH:$PKG_CONFIG_PATH"
33  fi
34  AC_SUBST([GST_PKG_CONFIG_PATH])
35  AC_MSG_NOTICE([Using GST_PKG_CONFIG_PATH = $GST_PKG_CONFIG_PATH])
36])
37