AC_PREREQ(2.60)
AC_INIT([kmod],
	[3],
	[linux-modules@vger.kernel.org],
	[kmod],
	[http://git.profusion.mobi/cgit.cgi/kmod.git/])

AC_CONFIG_SRCDIR([libkmod/libkmod.c])
AC_CONFIG_AUX_DIR([build-aux])
AM_INIT_AUTOMAKE([check-news foreign 1.11 silent-rules
	tar-pax no-dist-gzip dist-xz subdir-objects])
AC_PROG_CC_STDC
AC_USE_SYSTEM_EXTENSIONS
AC_SYS_LARGEFILE
AC_CONFIG_MACRO_DIR([m4])
m4_ifndef([AM_SILENT_RULES], [m4_define([AM_SILENT_RULES],[])])
AM_SILENT_RULES([yes])
LT_INIT([disable-static pic-only])
AC_PREFIX_DEFAULT([/usr])

AC_PROG_CC
AC_PROG_CC_C99
AC_C_TYPEOF
AM_PROG_CC_C_O
AC_PROG_GCC_TRADITIONAL
AC_C_BIGENDIAN

AC_PROG_SED
AC_PROG_MKDIR_P
PKG_PROG_PKG_CONFIG

AC_ARG_WITH([rootprefix],
        AS_HELP_STRING([--with-rootprefix=DIR], [rootfs directory prefix for config files and kernel modules]),
        [], [with_rootprefix=""])
AC_SUBST([rootprefix], [$with_rootprefix])

AC_ARG_WITH([rootlibdir],
        AS_HELP_STRING([--with-rootlibdir=DIR], [rootfs directory to install shared libraries]),
        [], [with_rootlibdir=$libdir])
AC_SUBST([rootlibdir], [$with_rootlibdir])

AC_ARG_ENABLE([tools],
        AS_HELP_STRING([--disable-tools], [disable building tools that provide same functionality as module-init-tools @<:@default=enabled@:>@]),
	[], enable_tools=yes)
AM_CONDITIONAL([BUILD_TOOLS], [test "x$enable_tools" = "xyes"])

AC_ARG_ENABLE([logging],
	AS_HELP_STRING([--disable-logging], [disable system logging @<:@default=enabled@:>@]),
	[], enable_logging=yes)
AS_IF([test "x$enable_logging" = "xyes"], [
	AC_DEFINE(ENABLE_LOGGING, [1], [System logging.])
])

AC_ARG_WITH([xz],
	AS_HELP_STRING([--with-xz], [handle Xz-compressed modules @<:@default=disabled@:>@]),
	[], [with_xz=no])
AS_IF([test "x$with_xz" != "xno"], [
	PKG_CHECK_MODULES([liblzma], [liblzma >= 4.99])
	AC_DEFINE([ENABLE_XZ], [1], [Enable Xz for modules.])
], [
	AC_MSG_NOTICE([Xz support not requested])
])

AC_ARG_WITH([zlib],
	AS_HELP_STRING([--with-zlib], [handle gzipped modules @<:@default=disabled@:>@]),
	[], [with_zlib=no])
AS_IF([test "x$with_zlib" != "xno"], [
	PKG_CHECK_MODULES([zlib], [zlib])
	AC_DEFINE([ENABLE_ZLIB], [1], [Enable zlib for modules.])
], [
	AC_MSG_NOTICE([zlib support not requested])
])

AC_ARG_ENABLE([debug],
	AS_HELP_STRING([--enable-debug], [enable debug messages @<:@default=disabled@:>@]),
	[], [enable_debug=no])
AS_IF([test "x$enable_debug" = "xyes"], [
	AC_DEFINE(ENABLE_DEBUG, [1], [Debug messages.])
])

CC_CHECK_CFLAGS_APPEND([ \
			-pipe \
			-DANOTHER_BRICK_IN_THE \
			-Wall \
			-W \
			-Wextra \
			-Wno-inline \
			-Wvla \
			-Wundef \
			-Wformat=2 \
			-Wlogical-op \
			-Wsign-compare \
			-Wformat-security \
			-Wmissing-include-dirs \
			-Wformat-nonliteral \
			-Wold-style-definition \
			-Wpointer-arith \
			-Winit-self \
			-Wdeclaration-after-statement \
			-Wfloat-equal \
			-Wmissing-prototypes \
			-Wstrict-prototypes \
			-Wredundant-decls \
			-Wmissing-declarations \
			-Wmissing-noreturn \
			-Wshadow \
			-Wendif-labels \
			-Wstrict-aliasing=2 \
			-Wwrite-strings \
			-Wno-long-long \
			-Wno-overlength-strings \
			-Wno-unused-parameter \
			-Wno-missing-field-initializers \
			-Wno-unused-result \
			-Wnested-externs \
			-Wchar-subscripts \
			-Wtype-limits \
			-Wuninitialized \
			-fno-common \
			-fdiagnostics-show-option \
			-fvisibility=hidden \
			-ffunction-sections \
			-fdata-sections \
			-Wl,--as-needed \
			-Wl,--gc-sections])


AC_CONFIG_HEADERS(config.h)
AC_CONFIG_FILES([
	Makefile
])

AC_OUTPUT
AC_MSG_RESULT([
	$PACKAGE $VERSION
	========

	prefix:			${prefix}
	rootprefix:		${rootprefix}
	sysconfdir:		${sysconfdir}
	libdir:			${libdir}
	rootlibdir:		${rootlibdir}
	includedir:		${includedir}
	bindir:			${bindir}

	compiler:		${CC}
	cflags:			${CFLAGS}
	ldflags:		${LDFLAGS}

	tools:			${enable_tools}
	logging:		${enable_logging}
	compression:		xz=${with_xz}  zlib=${with_zlib}
	debug:			${enable_debug}
])