dnl ###########
dnl ## SETUP ###########################################################
dnl ###########

AC_INIT([ezstream], [1.0.2], [https://gitlab.xiph.org/xiph/ezstream/issues])
AC_PREREQ([2.69])
AC_CONFIG_SRCDIR([src/ezstream.c])
AC_CONFIG_AUX_DIR([build-aux])
AM_INIT_AUTOMAKE
AC_CONFIG_HEADERS([src/config.h])
AC_CONFIG_LIBOBJ_DIR([compat])
AM_MAINTAINER_MODE
AC_USE_SYSTEM_EXTENSIONS
AC_PROG_CC_STDC
AC_PROG_FGREP
AC_CANONICAL_HOST

SOURCE_DATE=$(date '+%B %d, %Y')
if test -n "${SOURCE_DATE_EPOCH}"; then
	if test -n "$(date --version 2> /dev/null | head -n 1 | grep GNU)"; then
		SOURCE_DATE="$(LC_ALL=C date -u -d "@${SOURCE_DATE_EPOCH}" '+%B %d, %Y')"
	else
		# Assume BSD date
		SOURCE_DATE="$(LC_ALL=C date -u -r "${SOURCE_DATE_EPOCH}" '+%B %d, %Y')"
	fi
fi
AC_SUBST([SOURCE_DATE])

EXAMPLES_DIR="\$(datadir)/examples/${PACKAGE_TARNAME}"
AC_ARG_ENABLE([examplesdir],
	[AS_HELP_STRING([--enable-examplesdir=DIR],
		[examples installation directory (default: DATADIR/examples/ezstream)])],
[case "$enableval" in
	yes) ;;
	no) AC_MSG_ERROR([Must have an install directory for the examples.]) ;;
	*) EXAMPLES_DIR="$enableval" ;;
esac], [])
AC_SUBST([EXAMPLES_DIR])

LT_INIT
AC_SUBST([LIBTOOL_DEPS])

EZ_CFLAGS=""
EZ_CPPFLAGS=""
EZ_LDFLAGS=""
EZ_LIBS=""

AC_SYS_LARGEFILE

PKG_CHECK_MODULES([CHECK], [check >= 0.9.4])


dnl ##############
dnl ## COMPILER ########################################################
dnl ##############

if test -n "${GCC}"; then
	for _flag in Wall W Wshadow Wconversion Wmissing-declarations \
	    Wmissing-prototypes Wstrict-prototypes
	do
		AX_CHECK_CFLAG([${_flag}],
			[AX_UNIQVAR_APPEND([EZ_CFLAGS], [-${_flag}])], [])
	done
	AX_CHECK_CFLAG([Wformat=2],
		[AX_UNIQVAR_APPEND([EZ_CFLAGS], [-Wformat=2])],
		[
		  AX_CHECK_CFLAG([Wformat],
			[AX_UNIQVAR_APPEND([EZ_CFLAGS], [-Wformat])], [])
		])
else
	case "${host}" in
	*-irix*)
		EZ_CFLAGS="-fullwarn"
		;;
	*-solaris*)
		EZ_CFLAGS="-v"
		;;
	*)
		;;
	esac
fi

have_attributes=no
CFG_ATTRIBUTE_UNUSED=0
AX_FUNC_ATTRIBUTE_UNUSED([
	CFG_ATTRIBUTE_UNUSED=1
	have_attributes=yes
], [])
AC_SUBST([CFG_ATTRIBUTE_UNUSED])

CFG_HAVE_ATTRIBUTES=0
CFG_ATTRIBUTE_FORMAT=0
CFG_ATTRIBUTE_NONNULL=0
if test x"${have_attributes}" = "xyes"; then
	CFG_HAVE_ATTRIBUTES=1
	AX_FUNC_ATTRIBUTE([const char *a, ...],
		[format], [(printf, 1, 2)],
		[CFG_ATTRIBUTE_FORMAT=1], [])
	AX_FUNC_ATTRIBUTE([const char *a],
		[nonnull], [(1)],
		[CFG_ATTRIBUTE_NONNULL=1], [])
fi
AC_SUBST([CFG_HAVE_ATTRIBUTES])
AC_SUBST([CFG_ATTRIBUTE_FORMAT])
AC_SUBST([CFG_ATTRIBUTE_NONNULL])

AC_C_CONST
AC_C_VOLATILE

want_asan="no"
AC_ARG_WITH([asan],
	[AS_HELP_STRING([--with-asan=yes],
		[build with AddressSanitizer (for debugging) (default: no)])],
	[
case "${withval}" in
	no)
		;;
	*)
		want_asan="yes"
		;;
esac
	]
)
if test x"${want_asan}" = "xyes"; then
	AX_UNIQVAR_APPEND([EZ_CFLAGS], [-fsanitize=address -fno-omit-frame-pointer])
	AX_UNIQVAR_APPEND([EZ_LDFLAGS], [-fsanitize=address -fno-omit-frame-pointer])
fi

dnl #############
dnl ## HEADERS #########################################################
dnl #############

AC_CHECK_HEADERS([ \
	sys/random.h sys/time.h libgen.h paths.h \
], [], [],
[
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
])


dnl ###########
dnl ## TYPES ###########################################################
dnl ###########

AC_TYPE_SIZE_T
AC_TYPE_SSIZE_T


dnl ###############
dnl ## LIBRARIES #######################################################
dnl ###############

AC_CHECK_LIB([gen], [basename],
	[AX_UNIQVAR_PREPEND([EZ_LIBS], [-lgen]) ])

AX_CHECK_LIBSHOUT([], [],
	[AC_MSG_ERROR([libshout is missing], [1])])
AX_UNIQVAR_APPEND([EZ_CPPFLAGS], [${LIBSHOUT_CPPFLAGS}])
AX_UNIQVAR_APPEND([EZ_CFLAGS], [${LIBSHOUT_CFLAGS}])
AX_UNIQVAR_APPEND([EZ_LDFLAGS], [${LIBSHOUT_LDFLAGS}])
AX_UNIQVAR_PREPEND([EZ_LIBS], [${LIBSHOUT_LIBS}])

AX_CHECK_LIBXML2([], [],
	[AC_MSG_ERROR([libxml is missing], [1])])
AX_UNIQVAR_APPEND([EZ_CPPFLAGS], [${LIBXML2_CPPFLAGS}])
AX_UNIQVAR_APPEND([EZ_CFLAGS], [${LIBXML2_CFLAGS}])
AX_UNIQVAR_APPEND([EZ_LDFLAGS], [${LIBXML2_LDFLAGS}])
AX_UNIQVAR_PREPEND([EZ_LIBS], [${LIBXML2_LIBS}])

AX_CHECK_TAGLIB_C([], [],
	[AC_MSG_ERROR([libtag_c is missing], [1])])
AX_UNIQVAR_APPEND([EZ_CFLAGS], [${TAGLIB_CFLAGS}])
AX_UNIQVAR_APPEND([EZ_CPPFLAGS], [${TAGLIB_CPPFLAGS}])
AX_UNIQVAR_APPEND([EZ_LDFLAGS], [${TAGLIB_LDFLAGS}])
AX_UNIQVAR_PREPEND([EZ_LIBS], [${TAGLIB_C_LIBS}])

EZ_LIBICONV=""
AM_ICONV
if test -n "${LTLIBICONV}"; then
	EZ_LIBICONV="${LTLIBICONV}"
else
	EZ_LIBICONV="${LIBICONV}"
fi
AX_UNIQVAR_APPEND([EZ_CPPFLAGS], [$INCICONV])
AX_UNIQVAR_PREPEND([EZ_LIBS], [$EZ_LIBICONV])
use_iconv="No"
if test x"${am_cv_func_iconv}" = "xyes"; then
	use_iconv="Yes"
fi


dnl #######################
dnl ## FUNCTIONS / MACROS ##############################################
dnl #######################

AC_CHECK_FUNCS([ \
	arc4random \
	getrandom \
])

AC_REPLACE_FUNCS([ \
	getopt \
	reallocarray \
	strlcat \
	strlcpy \
	strtonum \
])

AC_CHECK_FUNC([clock_gettime], [], [
	AC_CHECK_LIB([rt], [clock_gettime], [
		AX_UNIQVAR_PREPEND([EZ_LIBS], [-lrt])
	])
])



dnl ##################
dnl ## MISCELLANEOUS ###################################################
dnl ##################

AX_CHECK___PROGNAME


dnl ############
dnl ## OUTPUT ##########################################################
dnl ############

AC_SUBST([EZ_CPPFLAGS])
AC_SUBST([EZ_CFLAGS])
AC_SUBST([EZ_LDFLAGS])
AC_SUBST([EZ_LIBS])

AC_CONFIG_FILES([
	Makefile
	build-aux/Makefile
	compat/Makefile
	doc/Makefile
	doc/ezstream-cfgmigrate.1.in
	doc/ezstream-file.sh.1.in
	doc/ezstream.1.in
	examples/Makefile
	m4/Makefile
	src/Makefile
	src/attr_config.h
	src/ezstream-file.sh
	tests/Makefile
])

AC_OUTPUT

cat << __EOT

${PACKAGE_STRING} has been configured successfully.

Configuration:
    Charset conversion support ......... : ${use_iconv}
    Prefix ............................. : ${prefix}
    AddressSanitizer (for debugging) ... : ${want_asan}

__EOT