#                                               -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.

AC_PREREQ([2.68])
AC_INIT([powertop], [2.9-pre], [powertop@lists.01.org], [], [https://01.org/powertop])
AM_INIT_AUTOMAKE([
	-Wall
	1.12.2
	foreign
])
AC_LANG([C++])
AC_CONFIG_FILES([
	Makefile
	src/Makefile
	traceevent/Makefile
	po/Makefile.in
	doc/Makefile
])
AC_CONFIG_SRCDIR([src/main.cpp])
AC_CONFIG_MACRO_DIR([m4])
AC_USE_SYSTEM_EXTENSIONS
AC_CONFIG_HEADERS([config.h])
GETTEXT_PACKAGE=powertop
AC_SUBST([GETTEXT_PACKAGE])
AM_SILENT_RULES([yes])
AM_GNU_GETTEXT([external])
AM_GNU_GETTEXT_VERSION([0.18.2])

m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
# Checks for programs.
AC_PROG_CPP
AC_PROG_CXX
AC_PROG_LIBTOOL
AC_PROG_CC
AC_PROG_INSTALL
AM_PROG_CC_C_O
GCC_FORTIFY_SOURCE_CC
AX_CXX_COMPILE_STDCXX_11([noext], [mandatory])

# Checks for libraries.
AX_PTHREAD([
    LIBS="$PTHREAD_LIBS $LIBS"
    CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
    CC="$PTHREAD_CC"
  ], [
    AC_MSG_ERROR([Could not configure pthreads support])
])

# Checks for header files.
AC_CHECK_HEADERS([ \
	fcntl.h \
	libintl.h \
	limits.h \
	locale.h \
	malloc.h \
	ncurses.h \
	stdint.h \
	stdlib.h \
	string.h \
	sys/ioctl.h \
	sys/socket.h \
	sys/statfs.h \
	sys/time.h \
	termios.h \
	unistd.h \
])

# Checks for typedefs, structures, and compiler characteristics.
AC_HEADER_STDBOOL
AC_C_INLINE
AC_TYPE_INT64_T
AC_TYPE_PID_T
AC_TYPE_SIZE_T
AC_TYPE_SSIZE_T
AC_TYPE_UINT16_T
AC_TYPE_UINT32_T
AC_TYPE_UINT64_T

# Checks for library functions.
AC_FUNC_MALLOC
AC_FUNC_MMAP
AC_FUNC_REALLOC
AC_FUNC_STRTOD
AC_CHECK_FUNCS([ \
	fdatasync \
	getpagesize \
	gettimeofday \
	memmove \
	memset \
	mkdir \
	munmap \
	pow \
	realpath \
	regcomp \
	select \
	setlocale \
	socket \
	sqrt \
	strcasecmp \
	strchr \
	strdup \
	strerror \
	strncasecmp \
	strstr \
	strtoul \
	strtoull \
])

AC_SEARCH_LIBS([clock_gettime], [rt])

PKG_CHECK_MODULES([NCURSES], [ncursesw ncurses], [LIBS="$LIBS $ncurses_LIBS"], [
	AC_SEARCH_LIBS([delwin], [ncursesw ncurses], [], [
		AC_MSG_ERROR([ncurses is required but was not found])
	], [])
])

has_libpci=0
PKG_CHECK_MODULES([PCIUTILS], [libpci],[has_libpci=1], [
	AC_SEARCH_LIBS([pci_get_dev], [pci],[has_libpci=1], [has_libpci=0])
])
 

has_libnl_ver=0
dnl libnl-2 provides only libnl-2.0.pc file, so we check for separate
dnl libnl-genl-3.0.pc pkg-config file just for libnl-3.0 case.
PKG_CHECK_MODULES([LIBNL], [libnl-3.0 >= 3.0 libnl-genl-3.0 >= 3.0], [has_libnl_ver=3], [
	PKG_CHECK_MODULES([LIBNL], [libnl-2.0 >= 2.0], [has_libnl_ver=2], [
		PKG_CHECK_MODULES([LIBNL], [libnl-1], [has_libnl_ver=1], [has_libnl_ver=0])
	])
])
AS_IF([test "$has_libnl_ver" -eq 0], [
	AC_MSG_ERROR([libnl and libnl-genl are required but were not found])
])
AS_IF([test "$has_libnl_ver" -gt 1], [
	AC_DEFINE([HAVE_LIBNL20], [1], [Define if you have libnl-2.0 or higher])
])

AS_IF([test "$has_libpci" -eq 0], [
	AC_DEFINE([HAVE_NO_PCI], [1], [Define if pci is not supported])
        AC_MSG_WARN([
			************* LIBPCI SUPPORT NOT CONFIGURED**************
			If you need or want pci support, please install libpci 
			and re-configure PowerTOP. 
			*********************************************************
	])
])

AC_SEARCH_LIBS([inet_aton], [resolv], [], [
	AC_MSG_ERROR([libresolv is required but was not found])
], [])


AC_OUTPUT