configure.ac

AC_PREREQ([2.69])

dnl initialize autoconf
dnl releases only do -Wall, git and prerelease does -Werror too
dnl use a three digit version number for releases, and four for git/pre
AC_INIT([aml-v4l2-plugin-package],[1.0.0])

GST_REQUIRED=1.0.0

AC_CONFIG_AUX_DIR([build-aux])
AC_CONFIG_MACRO_DIR([m4])

AC_CONFIG_SRCDIR([src])

dnl define the output header for config
AC_CONFIG_HEADERS([config.h])

dnl required version of automake
AM_INIT_AUTOMAKE([1.10])

dnl enable mainainer mode by default
AM_MAINTAINER_MODE([enable])

dnl check for tools (compiler etc.)
AC_PROG_CC

dnl required version of libtool
LT_PREREQ([2.2.6])
LT_INIT

dnl check for pthreads
AX_PTHREAD

dnl give error and exit if we don't have pkgconfig
AC_CHECK_PROG(HAVE_PKGCONFIG, pkg-config, [ ], [
  AC_MSG_ERROR([You need to have pkg-config installed!])
])

AC_DEFINE(GST_V4L2_ENABLE_PROBE, 1, [Define if Video4Linux probe shall be run at plugin load])
# AC_DEFINE(HAVE_LIBV4L2, 1, [Define if Video4Linux probe shall be run at plugin load])

dnl Check for the required version of GStreamer core (and gst-plugins-base)
dnl This will export GST_CFLAGS and GST_LIBS variables for use in Makefile.am
dnl
dnl If you need libraries from gst-plugins-base here, also add:
dnl for libgstaudio-1.0: gstreamer-audio-1.0 >= $GST_REQUIRED
dnl for libgstvideo-1.0: gstreamer-video-1.0 >= $GST_REQUIRED
dnl for libgsttag-1.0: gstreamer-tag-1.0 >= $GST_REQUIRED
dnl for libgstpbutils-1.0: gstreamer-pbutils-1.0 >= $GST_REQUIRED
dnl for libgstfft-1.0: gstreamer-fft-1.0 >= $GST_REQUIRED
dnl for libgstinterfaces-1.0: gstreamer-interfaces-1.0 >= $GST_REQUIRED
dnl for libgstrtp-1.0: gstreamer-rtp-1.0 >= $GST_REQUIRED
dnl for libgstrtsp-1.0: gstreamer-rtsp-1.0 >= $GST_REQUIRED
dnl etc.

PKG_CHECK_MODULES(GST, [
  gstreamer-1.0 >= $GST_REQUIRED
  gstreamer-base-1.0 >= $GST_REQUIRED
  gstreamer-allocators-1.0 >= $GST_REQUIRED
  gstreamer-video-1.0 >= $GST_REQUIRED
], [
  AC_SUBST(GST_CFLAGS)
  AC_SUBST(GST_LIBS)
], [
  AC_MSG_ERROR([
      You need to install or upgrade the GStreamer development
      packages on your system. On debian-based systems these are
      libgstreamer1.0-dev and libgstreamer-plugins-base1.0-dev.
      on RPM-based systems gstreamer1.0-devel, libgstreamer1.0-devel
      or similar. The minimum version required is $GST_REQUIRED.
  ])
])

dnl check if compiler understands -Wall (if yes, add -Wall to GST_CFLAGS)
AC_MSG_CHECKING([to see if compiler understands -Wall])
save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Wall"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([ ], [ ])], [
  GST_CFLAGS="$GST_CFLAGS -Wall"
  AC_MSG_RESULT([yes])
], [
  AC_MSG_RESULT([no])
])

dnl set the plugindir where plugins should be installed (for src/Makefile.am)
if test "x${prefix}" = "x$HOME"; then
  plugindir="$HOME/.gstreamer-1.0/plugins"
else
  plugindir="\$(libdir)/gstreamer-1.0"
fi
AC_SUBST(plugindir)

dnl set proper LDFLAGS for plugins
GST_PLUGIN_LDFLAGS='-module -avoid-version -export-symbols-regex [_]*\(gst_\|Gst\|GST_\).*'
AC_SUBST(GST_PLUGIN_LDFLAGS)

AC_CONFIG_FILES([Makefile
  src/Makefile
])
AC_OUTPUT