AC_PREREQ([2.58])

m4_define(pig_major, 0)
m4_define(pig_minor, 1)
m4_define(pig_micro, 1)
AC_INIT(pig,[pig_major.pig_minor.pig_micro])

PIG_VERSION_MAJOR=pig_major
PIG_VERSION_MINOR=pig_minor
PIG_VERSION_MICRO=pig_micro
PIG_VERSION=$PIG_VERSION_MAJOR.$PIG_VERSION_MINOR.$PIG_VERSION_MICRO
AC_SUBST(PIG_VERSION_MAJOR)
AC_SUBST(PIG_VERSION_MINOR)
AC_SUBST(PIG_VERSION_MICRO)
AC_SUBST(PIG_VERSION)


[PIG_DEVEL=$(echo $PIG_VERSION_MICRO | sed 's/[0-9]*[13579]/yes/')]
[PIG_SNAPSHOT=$(echo $PIG_VERSION_MINOR | sed 's/[0-9]*[13579]/yes/')]

AM_INIT_AUTOMAKE(1.6)

PIG_MAJORMINOR=$PIG_VERSION_MAJOR.$PIG_VERSION_MINOR
AC_SUBST(PIG_MAJORMINOR)

AM_CONFIG_HEADER(config.h)
AC_CONFIG_MACRO_DIR([m4])

GETTEXT_PACKAGE=$PACKAGE
AC_SUBST(GETTEXT_PACKAGE)
AC_DEFINE_UNQUOTED([GETTEXT_PACKAGE],["$GETTEXT_PACKAGE"],[Gettext package])
AM_GLIB_GNU_GETTEXT([external])

dnl decide on error flags
dnl if we support them, we set them unconditionally
AS_COMPILER_FLAGS(GLOBAL_CFLAGS, "-Wall -Wextra -Wno-missing-field-initializers -Wno-unused-parameter -Wold-style-definition -Wdeclaration-after-statement -Wmissing-declarations -Wmissing-prototypes -Wredundant-decls -Wmissing-noreturn -Wshadow -Wpointer-arith -Wcast-align -Wwrite-strings -Winline -Wformat-nonliteral -Wformat-security -Wswitch-enum -Wswitch-default -Winit-self -Wmissing-include-dirs -Wundef -Waggregate-return -Wmissing-format-attribute -Wnested-externs -Wunsafe-loop-optimizations -Wpacked -Winvalid-pch -Wsync-nand")

if test x$PIG_DEVEL = xyes ; then
  AS_COMPILER_FLAGS(GLOBAL_CFLAGS, "-Werror")
fi

dnl Compute the libversion automatically, so there's no need to think about it
dnl when bumping versions.
dnl XXX: This needs fixage once we hit 1.0!
dnl Note that the libversions are based on Pig's current release mechanism 
dnl detailed at 
dnl http://lists.freedesktop.org/archives/pig/2008-January/001131.html
dnl If this ever changes (like when Pig gets a stable API), don't forget to
dnl change this
if test x"$PIG_SNAPSHOT" = xyes ; then
  PIG_LIBVERSION="$PIG_VERSION_MICRO:0:0"
else
  PIG_LIBVERSION="0:0:0"
fi
AC_SUBST(PIG_LIBVERSION)
AM_PROG_LIBTOOL

AC_PROG_CC
AM_PROG_CC_STDC
AM_PROG_CC_C_O

AC_HEADER_STDC

dnl
dnl check for mandatory libraries
dnl

GLIB_VER=2.16
AC_SUBST(GLIB_VER)
PKG_CHECK_MODULES(GLIB, glib-2.0 >= $GLIB_VER gobject-2.0 >= $GLIB_VER gio-2.0 >= $GLIB_VER gthread-2.0 >= $GLIB_VER)
GLIB_PREFIX="`$PKG_CONFIG --variable=prefix glib-2.0`"
AC_SUBST(GLIB_PREFIX)

dnl FIXME: detect these executables correctly
GLIB_GENMARSHAL=glib-genmarshal
AC_SUBST(GLIB_GENMARSHAL)
GLIB_MKENUMS=glib-mkenums
AC_SUBST(GLIB_MKENUMS)


CAIRO_VER=1.10.0
AC_SUBST(CAIRO_VER)
PKG_CHECK_MODULES(CAIRO, cairo >= $CAIRO_VER cairo-gobject >= $CAIRO_VER)
CAIRO_PREFIX="`$PKG_CONFIG --variable=prefix cairo`"
AC_SUBST(CAIRO_PREFIX)


dnl
dnl Check for pixbuf libraries
dnl

AC_ARG_ENABLE(pixbuf,
	AS_HELP_STRING([--enable-pixbuf],
			[enable build of pig-pixbuf library (default=yes)])],
	enable_pixbuf=$enableval,
	enable_pixbuf="yes")
PIXBUF_VER=2.22.0
AC_SUBST(PIXBUF_VER)
PIXBUF_PREFIX="`$PKG_CONFIG --variable=prefix gdk-pixbuf-2.0`"
AC_SUBST(PIXBUF_PREFIX)
HAVE_PIXBUF=no
if test "$enable_pixbuf" = "yes"; then
        PKG_CHECK_MODULES(PIXBUF, gdk-pixbuf-2.0 >= $PIXBUF_VER, HAVE_PIXBUF=yes)
	AC_DEFINE(HAVE_PIXBUF, 1, [Define if pig-pixbuf library should be built])
else
	AC_MSG_NOTICE([pig-pixbuf library will not be built.])
fi
AM_CONDITIONAL(HAVE_PIXBUF, [test "x$HAVE_PIXBUF" = xyes])


dnl
dnl Set global variables
dnl

AC_SUBST(GLOBAL_CFLAGS)
AC_SUBST(GLOBAL_LIBS)

PIG_CFLAGS="-I\$(top_srcdir) $GLIB_CFLAGS $CAIRO_CFLAGS"
PIG_LIBS="\$(top_builddir)/pig/libpig-$PIG_MAJORMINOR.la $GLIB_LIBS $CAIRO_LIBS -lz -lm"
AC_SUBST(PIG_LIBS)
AC_SUBST(PIG_CFLAGS)

PIG_PIXBUF_CFLAGS="$PIG_CFLAGS $PIXBUF_CFLAGS"
PIG_PIXBUF_LIBS="$PIG_LIBS \$(top_builddir)/pig/libpig-pixbuf-$PIG_MAJORMINOR.la $PIXBUF_LIBS"
AC_SUBST(PIG_PIXBUF_LIBS)
AC_SUBST(PIG_PIXBUF_CFLAGS)

GTK_DOC_CHECK([1.11])

dnl #########################
dnl # Make the output files #
dnl #########################

AC_CONFIG_FILES(
Makefile
data/Makefile
data/pig.pc
data/pig-pixbuf.pc
doc/Makefile
doc/pig-version.xml
pig/Makefile
pig/pig-version.h
po/Makefile.in
)

AC_OUTPUT