AC_INIT(configure.in)

AM_CONFIG_HEADER(config.h)
AM_INIT_AUTOMAKE(ncmpcpp, 0.6_pre)

AC_PREREQ(2.59)

AC_LANG_CPLUSPLUS
AC_PROG_CXX
AM_PROG_LIBTOOL

AC_ARG_ENABLE(outputs, AS_HELP_STRING([--enable-outputs], [Enable outputs screen @<:@default=no@:>@]), [outputs=$enableval], [outputs=no])
AC_ARG_ENABLE(visualizer, AS_HELP_STRING([--enable-visualizer], [Enable music visualizer screen @<:@default=no@:>@]), [visualizer=$enableval], [visualizer=no])
AC_ARG_ENABLE(clock, AS_HELP_STRING([--enable-clock], [Enable clock screen @<:@default=no@:>@]), [clock=$enableval], [clock=no])
AC_ARG_ENABLE(unicode, AS_HELP_STRING([--enable-unicode], [Enable utf8 support @<:@default=yes@:>@]), [unicode=$enableval], [unicode=yes])
AC_ARG_WITH(curl, AS_HELP_STRING([--with-curl], [Enable fetching lyrics from the Internet @<:@default=auto@:>@]), [curl=$withval], [curl=auto])
AC_ARG_WITH(fftw, AS_HELP_STRING([--with-fftw], [Enable fftw support (required for frequency spectrum vizualization) @<:@default=auto@:>@]), [fftw=$withval], [fftw=auto])
AC_ARG_WITH(iconv, AS_HELP_STRING([--with-iconv], [Enable iconv support (Note: if you use utf-8 system wide, you can disable this) @<:@default=auto@:>@]), [iconv=$withval], [iconv=auto])
AC_ARG_WITH(pdcurses, AS_HELP_STRING([--with-pdcurses[=LIBNAME]], [Link against pdcurses instead of ncurses @<:@default=XCurses@:>@]), [pdcurses=$withval], [pdcurses=no])
AC_ARG_WITH(taglib, AS_HELP_STRING([--with-taglib], [Enable tag editor @<:@default=auto@:>@]), [taglib=$withval], [taglib=auto])

if test "$outputs" = "yes"; then
	AC_DEFINE([ENABLE_OUTPUTS], [1], [enables outputs screen])
fi

if test "$clock" = "yes"; then
	AC_DEFINE([ENABLE_CLOCK], [1], [enables clock screen])
fi

dnl =====================================
dnl = checking for -fno-exceptions flag =
dnl =====================================
AC_MSG_CHECKING([whether compiler supports -fno-exceptions])
old_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="-fno-exceptions"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ ]])],
	AC_MSG_RESULT([yes])
		no_exceptions="-fno-exceptions",
	AC_MSG_RESULT([no])
)
CXXFLAGS="$old_CXXFLAGS $no_exceptions"

dnl ================================
dnl = checking for -std=c++0x flag =
dnl ================================
AC_MSG_CHECKING([whether compiler supports -std=c++0x])
old_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="-std=c++0x"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ ]])],
	AC_MSG_RESULT([yes])
		std_cpp0x="-std=c++0x",
	AC_MSG_RESULT([no])
		AC_MSG_ERROR([[Your compiler doesn't seem to support C++0x, please upgrade (GCC >= 4.4)]])
)
CXXFLAGS="$old_CXXFLAGS $std_cpp0x"

dnl ==============================
dnl = checking for regex (win32) =
dnl ==============================
AC_CHECK_LIB(regex, regcomp, LDFLAGS="$LDFLAGS -lregex", )

dnl ================================
dnl = checking for various headers =
dnl ================================
AC_CHECK_HEADERS([dirent.h regex.h], , AC_MSG_ERROR(vital headers missing))
AC_CHECK_HEADERS([langinfo.h], , AC_MSG_WARN(locale detection disabled))

dnl ==============================
dnl = checking for libmpdclient2 =
dnl ==============================
PKG_CHECK_MODULES([libmpdclient], [libmpdclient >= 2.8], [
	AC_SUBST(libmpdclient_LIBS)
	AC_SUBST(libmpdclient_CFLAGS)
	CPPFLAGS="$CPPFLAGS $libmpdclient_CFLAGS"
	AC_CHECK_HEADERS([mpd/client.h],
		LDFLAGS="$LDFLAGS $libmpdclient_LIBS"
	,
		AC_MSG_ERROR([missing mpd/client.h header])
	)
],
	AC_MSG_ERROR([libmpdclient >= 2.8 is required!])
)

dnl ========================
dnl = checking for pthread =
dnl ========================
AC_CHECK_HEADERS([pthread.h],
	AC_CHECK_LIB(pthread, pthread_create, LDFLAGS="$LDFLAGS -lpthread",
		AC_MSG_ERROR([pthread.h found but there is no pthread library to make use of])
	),
)

dnl ======================
dnl = checking for iconv =
dnl ======================
if test "$iconv" != "no" ; then
	AC_CHECK_HEADERS([iconv.h],
		AC_MSG_CHECKING([whether iconv takes const char **])
		AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <iconv.h>]], [[iconv(0, (const char **)0, 0, 0, 0);]])],
			AC_MSG_RESULT([yes]) AC_DEFINE([ICONV_CONST], [const], [pass const pointer to iconv]),
			AC_MSG_RESULT([no]) AC_DEFINE([ICONV_CONST], [], [pass non-const pointer to iconv]))
		AC_CHECK_LIB(iconv, libiconv, LDFLAGS="$LDFLAGS -liconv", )
	,
	if test "$iconv" = "yes"; then
		AC_MSG_ERROR([iconv.h header is required])
	fi
	)
fi

dnl ========================
dnl = checking for ncurses =
dnl ========================
if test "$pdcurses" = "no" ; then
	if test "$unicode" = "yes" ; then
		curses_config_bin="ncursesw6-config ncursesw5-config"
		AC_DEFINE([_UTF8], [1], [enables unicode support])
	else
		curses_config_bin="ncurses6-config ncurses5-config"
	fi
else
	if test "$pdcurses" = "yes" ; then
		pdcurses_lib=XCurses
		curses_config_bin=xcurses-config
	else
		pdcurses_lib=$pdcurses
	fi
	AC_DEFINE([USE_PDCURSES], [1], [enables pdcurses support])
fi
AC_PATH_PROGS(CURSES_CONFIG, $curses_config_bin)
if test "$CURSES_CONFIG" != "" ; then
	CPPFLAGS="$CPPFLAGS `$CURSES_CONFIG --cflags`"
	LDFLAGS="$LDFLAGS `$CURSES_CONFIG --libs`"
fi
if test "$pdcurses" = "no" ; then
	AC_CHECK_LIB(ncursesw, initscr,
		curses_lib=ncursesw,
		curses_lib=ncurses
	)
else
	curses_lib=$pdcurses_lib
fi
AC_CHECK_LIB($curses_lib, initscr,
	if test "$CURSES_CONFIG" = "" ; then
		LDFLAGS="$LDFLAGS -l$curses_lib"
	fi
	,
	AC_MSG_ERROR([$curses_lib library is required])
	)
if test "$pdcurses" != "no" ; then
	AC_CHECK_LIB($curses_lib, Xinitscr, AC_DEFINE([XCURSES], [1], [x11 pdcurses available]), )
fi
AC_CHECK_HEADERS([curses.h], , AC_MSG_ERROR([missing curses.h header]))

dnl ======================
dnl = checking for fftw3 =
dnl ======================
if test "$visualizer" = "yes" ; then
	if test "$fftw" != "no" ; then
		PKG_CHECK_MODULES([fftw3], [fftw3 >= 3], [
			AC_SUBST(fftw3_LIBS)
			AC_SUBST(fftw3_CFLAGS)
			CPPFLAGS="$CPPFLAGS $fftw3_CFLAGS"
			AC_CHECK_HEADERS([fftw3.h],
				LDFLAGS="$LDFLAGS $fftw3_LIBS"
			,
				if test "$fftw" = "yes" ; then
					AC_MSG_ERROR([missing fftw3.h header])
				fi
			)
		],
			if test "$fftw" = "yes" ; then
				AC_MSG_ERROR([fftw3 library is required!])
			fi
		)
	fi
	AC_DEFINE([ENABLE_VISUALIZER], [1], [enables music visualizer screen])
fi

dnl =====================
dnl = checking for curl =
dnl =====================
if test "$curl" != "no" ; then
	AC_PATH_PROG(CURL_CONFIG, curl-config)
	if test "$CURL_CONFIG" != "" ; then
		CPPFLAGS="$CPPFLAGS `$CURL_CONFIG --cflags`"
		AC_CHECK_LIB(curl, curl_easy_init, LDFLAGS="$LDFLAGS `$CURL_CONFIG --libs`",
			if test "$curl" = "yes" ; then
				AC_MSG_ERROR([curl library is required])
			fi
		)
		AC_CHECK_HEADERS([curl/curl.h], ,
			if test "$curl" = "yes" ; then
				AC_MSG_ERROR([missing curl.h header])
			fi
		)
	else
		AC_CHECK_LIB(curl, curl_easy_init, LDFLAGS="$LDFLAGS -lcurl",
			if test "$curl" = "yes" ; then
				AC_MSG_ERROR([curl library is required])
			fi
		)
	fi
fi

dnl =======================
dnl = checking for taglib =
dnl =======================
if test "$taglib" != "no" ; then
	AC_PATH_PROG(TAGLIB_CONFIG, taglib-config)
	if test "$TAGLIB_CONFIG" != "" ; then
		CPPFLAGS="$CPPFLAGS `$TAGLIB_CONFIG --cflags`"
		LDFLAGS="$LDFLAGS `$TAGLIB_CONFIG --libs`"
		AC_CHECK_HEADERS([taglib.h], ,
			if test "$taglib" = "yes" ; then
				AC_MSG_ERROR([missing taglib.h header])
			fi
		)
	else
		if test "$taglib" = "yes" ; then
			AC_MSG_ERROR([taglib-config executable is missing])
		fi
	fi
fi

AC_CONFIG_FILES([Makefile src/Makefile doc/Makefile])
AC_OUTPUT