elinks/configure.ac

dnl Process this file with autoconf to produce a configure script.

dnl There are two types of comments in this file.
dnl Comments that refer to Autoconf macros begin with "dnl", and m4
dnl discards them.  Other comments begin with "#", and they get copied
dnl to the configure script, hopefully making it easier to read.

dnl Autoconf 2.13 generates an incomplete config.h.in; see ELinks bug 936.
dnl Autoconf 2.61 is installed in the computer that generates our nightly
dnl snapshots, so we need to be compatible with that.  (Also, some files
dnl in Autoconf 2.62 and 2.63 sources are not GPLv2 compatible.)
AC_PREREQ(2.61)
AC_INIT
AC_CONFIG_SRCDIR([src/main/main.c])
AC_CONFIG_AUX_DIR(config)
AC_CONFIG_MACRO_DIR([config/m4])

PACKAGE=elinks
VERSION=0.16.GIT
AC_SUBST(PACKAGE)
AC_SUBST(VERSION)
AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Package version])
AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Package version])
AC_CONFIG_HEADERS(config.h)

AC_CHECK_PROG(ACLOCAL,[aclocal],[aclocal],[config/missing aclocal])
AC_CHECK_PROG(AUTOCONF,[autoconf],[autoconf],[config/missing autoconf])
AC_CHECK_PROG(AUTOHEADER,[autoheader],[autoheader],[config/missing autoheader])

AC_USE_SYSTEM_EXTENSIONS

MAKE=

for make in gnumake gmake make false; do
	if test "x$MAKE" = x; then
		AC_PATH_PROGS(MAKE, "$make")
	fi
done

builddir="`pwd`"

# Cleanup if we are configuring with a previous build in the tree
if test -e Makefile.config; then
	AC_MSG_CHECKING([for previous build to clean])
	"$MAKE" -C "$builddir/src" cleanall >/dev/null 2>/dev/null
	AC_MSG_RESULT(done)
fi

# ===================================================================
# Load feature configuration file and start logging features.
# ===================================================================

features="features.conf"
test -f "$srcdir/$features" && . "$srcdir/$features"
test -f "$builddir/$features" && . "$builddir/$features"
echo "Feature summary:" > features.log

# ===================================================================
# Checks for programs.
# ===================================================================

AC_PROG_CC
AC_PROG_CXX
AC_CHECK_TOOL([LD], [ld])
AC_PROG_AWK
AC_PATH_PROGS(AWK, "$AWK")
AC_PROG_RANLIB
AC_PROG_INSTALL

AC_PATH_PROGS(GIT, "git")
AC_PATH_PROGS(SPARSE, "sparse")

PKG_PROG_PKG_CONFIG

CONFIG_ASCIIDOC="no"
CONFIG_POD2HTML="no"
CONFIG_XMLTO="no"
CONFIG_DBLATEX="no"

if test "x$CONFIG_DOC" != xno; then
	AC_PATH_PROGS(PYTHON3, "python3")
	if test "x$PYTHON3" != "x"; then
		EL_CONFIG(CONFIG_ASCIIDOC, [AsciiDoc])
		EL_CONFIG(MANUAL_ASCIIDOC, [HTML (one file)])
		EL_CONFIG(MAN_ASCIIDOC, [HTML])
	fi

	AC_PATH_PROGS(XMLTO, "xmlto")
      	if test "x$XMLTO" != "x"; then
		EL_CONFIG(CONFIG_XMLTO, [XmlTo])
		EL_CONFIG(MANUAL_XMLTO, [HTML (multiple files)])
		EL_CONFIG(MAN_XMLTO, [man (groff)])
	fi

	AC_PATH_PROGS(DBLATEX, "dblatex")
	if test "x$DBLATEX" != "x"; then
		EL_CONFIG(CONFIG_DBLATEX, [dblatex])
		EL_CONFIG(MANUAL_DBLATEX, [PDF])
	fi

	AC_PATH_PROGS(POD2HTML, "pod2html")
      	if test "x$POD2HTML" != "x"; then
		EL_CONFIG(CONFIG_POD2HTML, [Pod2HTML])
	fi

	AC_PATH_PROGS(DOXYGEN, "doxygen")
	if test "x$DOXYGEN" != "x"; then
		EL_CONFIG(CONFIG_DOXYGEN, [Doxygen])
		api_srcdir="$(cd "$srcdir" && pwd)/src"
		AC_SUBST(api_srcdir)
	fi
fi

AC_SUBST(CONFIG_ASCIIDOC)
AC_SUBST(CONFIG_DOXYGEN)
AC_SUBST(CONFIG_POD2HTML)
AC_SUBST(CONFIG_XMLTO)
AC_SUBST(CONFIG_DBLATEX)

EL_CONFIG_DEPENDS(CONFIG_DOC, [CONFIG_ASCIIDOC CONFIG_XMLTO CONFIG_DBLATEX CONFIG_POD2HTML], [Documentation Tools])
EL_CONFIG_DEPENDS(CONFIG_MANUAL, [MANUAL_ASCIIDOC MANUAL_XMLTO MANUAL_DBLATEX], [Manual Formats])
EL_CONFIG_DEPENDS(CONFIG_MANPAGE, [MAN_ASCIIDOC MAN_XMLTO], [Man Page Formats])
EL_CONFIG_DEPENDS(CONFIG_APIDOCS, [CONFIG_DOXYGEN], [API Documentation])

# gcc specific options (to be continued at the bottom of configure)
if test "x$ac_cv_c_compiler_gnu" = "xyes"; then
  # We want to see all warnings and live with none.
  # We can't set up -Werror here as there may be some warnings in test
  # suite of configure, and we don't want to fail them.
  CFLAGS="$CFLAGS -Wall"
fi

# ===================================================================
# static binary
# ===================================================================

enable_static=no
pkg_config_static=

AC_ARG_WITH(static, [  --with-static           enable build of static binary],
            [ if test "x$withval" != xno; then enable_static=yes; fi ])

if test "$enable_static" = yes; then
	CFLAGS="$CFLAGS -static"
	pkg_config_static="--static"
fi

# ===================================================================
# Checks for special OSes.
# ===================================================================

dnl EL_CHECK_COMPILER_MACRO(define, name, flagname)
AC_DEFUN([EL_CHECK_COMPILER_MACROS],
[
	AC_MSG_CHECKING([for $2])

	for flag in $3; do
		AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[#ifndef $flag
kill me!
#endif ]])],[$1=yes],[$1=no])
		if test "[$]$1" = yes; then
			EL_CONFIG([$1], [$2])
			break
		fi
	done

	AC_MSG_RESULT([$]$1)
])

EL_CHECK_COMPILER_MACROS(CONFIG_OS_BEOS, [BEOS], [__BEOS__])
AC_SUBST(CONFIG_OS_BEOS)

EL_CHECK_COMPILER_MACROS(CONFIG_OS_DOS, [DOS], [__DJGPP])
AC_SUBST(CONFIG_OS_DOS)

EL_CHECK_COMPILER_MACROS(CONFIG_OS_RISCOS, [RISCOS], [__riscos__])
AC_SUBST(CONFIG_OS_RISCOS)

EL_CHECK_COMPILER_MACROS(CONFIG_OS_WIN32, [WIN32], [_WIN32 __WIN32__])
AC_SUBST(CONFIG_OS_WIN32)

EL_CHECK_COMPILER_MACROS(CONFIG_OS_OS2, [EMX], [__EMX__])
AC_SUBST(CONFIG_OS_OS2)
test "$CONFIG_OS_OS2" = yes && LDFLAGS=`echo "$LDFLAGS" | sed "s/-Zexe//g"`

AC_MSG_CHECKING([for UNIX])
dnl FIXME: some depend kind of mechanism
if test "$CONFIG_OS_BEOS" = no && \
   test "$CONFIG_OS_DOS" = no && \
   test "$CONFIG_OS_RISCOS" = no && \
   test "$CONFIG_OS_WIN32" = no && \
   test "$CONFIG_OS_OS2" = no; then
	EL_CONFIG(CONFIG_OS_UNIX, [UNIX])
else
	CONFIG_OS_UNIX=no
fi
AC_MSG_RESULT($CONFIG_OS_UNIX)
AC_SUBST(CONFIG_OS_UNIX)

# ===================================================================
# Checks for header files.
# ===================================================================

AC_HEADER_DIRENT
AC_HEADER_STDC
AC_HEADER_SYS_WAIT
AC_HEADER_TIME

AC_CHECK_HEADERS(wchar.h wctype.h)
AC_CHECK_HEADERS(fcntl.h limits.h time.h unistd.h)
AC_CHECK_HEADERS(libgen.h)
AC_CHECK_HEADERS(sigaction.h)
AC_CHECK_HEADERS(arpa/inet.h)
AC_CHECK_HEADERS(netinet/in_systm.h netinet/in_system.h netinet/ip.h)
AC_CHECK_HEADERS(netdb.h netinet/in.h netinet/in6_var.h)
AC_CHECK_HEADERS(ifaddrs.h)
AC_CHECK_HEADERS(sys/cygwin.h io.h)
AC_CHECK_HEADERS(sys/fmutex.h)
AC_CHECK_HEADERS(sys/ioctl.h sys/sockio.h)
AC_CHECK_HEADERS(sys/resource.h)
AC_CHECK_HEADERS(sys/select.h)
AC_CHECK_HEADERS(sys/socket.h)
AC_CHECK_HEADERS(sys/time.h)
AC_CHECK_HEADERS(sys/utsname.h)
AC_CHECK_HEADERS([net/if.h], [], [],
[[#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h> /* <net/if.h> on Mac OS X 10.5.4 needs this */
#endif
]])
AC_CHECK_HEADERS(stdint.h inttypes.h)
AC_CHECK_HEADERS(locale.h pwd.h)
AC_CHECK_HEADERS(termios.h)
AC_CHECK_HEADERS(poll.h)
AC_CHECK_HEADERS(stdalign.h)

if test "$CONFIG_OS_DOS" = no; then
	AC_CHECK_HEADERS(sys/un.h,
		[CONFIG_INTERLINK=yes
		 EL_CONFIG([CONFIG_INTERLINK], [interlinking])],
		[CONFIG_INTERLINK=no])
else
	CONFIG_INTERLINK=no
fi
AC_SUBST(CONFIG_INTERLINK)

# ===================================================================
# Checks for typedefs, structures, and compiler characteristics.
# ===================================================================

AC_STRUCT_TM
AC_C_CONST
AC_C_INLINE
AC_MSG_CHECKING([[for C99-conforming inline]])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#ifdef __cplusplus
#error noinline
#endif
	int add(int change);

	static int sum;

	inline int
	add(int change)
	{
		sum += change;
		return sum;
	}

	int
	sub(int change)
	{
		return add(-change);
	}]])],
	[AC_MSG_RESULT([[yes]])
	 AC_DEFINE([NONSTATIC_INLINE], [inline],
		[Define as inline if the compiler lets you declare a function without inline, then define it with inline, and have that definition refer to identifiers with internal linkage.  This is allowed by C99 6.7.4p6 and 6.7.4p3 together.  Otherwise define as nothing.])],
	[AC_MSG_RESULT([[no]])
	 AC_DEFINE([NONSTATIC_INLINE], [])])
EL_CHECK_CODE(typeof, HAVE_TYPEOF, [], [int a; typeof(a) b;])

AC_SYS_LARGEFILE
AC_TYPE_SIZE_T
AC_TYPE_OFF_T
EL_CHECK_TYPE(ssize_t, int)
EL_CHECK_SYS_TYPE(long long, HAVE_LONG_LONG, [])
EL_CHECK_SYS_TYPE(off_t, HAVE_OFF_T, [])
EL_CHECK_INT_TYPE(int32_t, HAVE_INT32_T)
EL_CHECK_INT_TYPE(uint32_t, HAVE_UINT32_T)
EL_CHECK_INT_TYPE(uint16_t, HAVE_UINT16_T)

AC_CHECK_SIZEOF(char, 1)
AC_CHECK_SIZEOF(short, 2)
AC_CHECK_SIZEOF(int, 4)
AC_CHECK_SIZEOF(long, 4)
test "x$HAVE_LONG_LONG" = xyes && AC_CHECK_SIZEOF(long long, 8)
test "x$HAVE_OFF_T" = xyes && AC_CHECK_SIZEOF(off_t, 4)

# Check for variadic macros
EL_CHECK_CODE([variadic macros], HAVE_VARIADIC_MACROS,
		[#include <stdio.h>
		 #define a(b,c...) printf(b,##c)],
                [a("foo");a("%s","bar");a("%s%s","baz","quux");])

# ===================================================================
# Checks for library functions.
# ===================================================================

AC_PROG_GCC_TRADITIONAL
AC_FUNC_MEMCMP
AC_FUNC_MMAP
AC_FUNC_STRFTIME
AC_CHECK_FUNCS(strptime)
AC_CHECK_FUNCS(atoll gethostbyaddr herror strerror)
AC_CHECK_FUNCS(popen uname access chmod alarm timegm mremap)
AC_CHECK_FUNCS(strcasecmp strncasecmp strcasestr strstr strchr strrchr)
AC_CHECK_FUNCS(memmove bcopy stpcpy strdup index isdigit mempcpy memrchr)
AC_CHECK_FUNCS(snprintf vsnprintf asprintf vasprintf)
AC_CHECK_FUNCS(getifaddrs getpwnam inet_aton inet_pton inet_ntop)
AC_CHECK_FUNCS(fflush fsync fseeko ftello sigaction)
AC_CHECK_FUNCS(gettimeofday clock_gettime)
AC_CHECK_FUNCS(setitimer, HAVE_SETITIMER=yes)

AC_CHECK_FUNCS([cygwin_conv_to_full_win32_path])

AC_CHECK_FUNCS(setenv putenv, HAVE_SETENV_OR_PUTENV=yes)
AC_CHECK_FUNCS(unsetenv)
AC_CHECK_FUNCS(getuid, HAVE_GETUID=yes)
AC_CHECK_FUNCS(geteuid, HAVE_GETEUID=yes)

AC_CHECK_FUNCS(wcwidth, HAVE_WCWIDTH=yes)

AC_CHECK_FUNCS(fork)
AC_CHECK_FUNCS(mkstemps)

# These aren't probably needed now, as they are commented in links.h.
# I've no idea about their historical background, but I keep them here
# just in the case they will help later. --pasky
AC_CHECK_FUNCS(getpid, HAVE_GETPID=yes)
AC_CHECK_FUNCS(setpgid getpgid setpgrp getpgrp)
AC_CHECK_FUNCS(raise, HAVE_RAISE=yes)
AC_CHECK_FUNCS(kill, HAVE_KILL=yes)

AC_CHECK_FUNCS(fpathconf, HAVE_FPATHCONF=yes)

AC_CHECK_FUNCS(poll, HAVE_POLL=yes)

if test x"$HAVE_RAISE" = x; then
	if test x"$HAVE_KILL" = x || test x"$HAVE_GETPID" = x; then
		AC_MSG_ERROR([Unable to emulate raise()])
	fi
fi

AC_CACHE_CHECK([for sysconf(_SC_PAGE_SIZE)],el_cv_HAVE_SC_PAGE_SIZE,[
AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <unistd.h>
]], [[int page_size = sysconf(_SC_PAGE_SIZE);]])],[el_cv_HAVE_SC_PAGE_SIZE=yes],[el_cv_HAVE_SC_PAGE_SIZE=no])])
if test x"$el_cv_HAVE_SC_PAGE_SIZE" = x"yes"; then
	EL_DEFINE(HAVE_SC_PAGE_SIZE, _SC_PAGE_SIZE)
fi

AC_CACHE_CHECK([for C99 vsnprintf],el_cv_HAVE_C99_VSNPRINTF,[
AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>

char buf[8];

int bar(char *buf, const char *format, va_list ap)
{
       return vsnprintf(buf, 0, format, ap);
}

void foo(const char *format, ...) {
       va_list ap;
       int len;

       va_start(ap, format);
       len = bar(buf, format, ap);
       va_end(ap);
       if ((len != 6) && (len != 7)) exit(1); /* \n -> \r\n */

       va_start(ap, format);
       len = bar(buf, format, ap);
       va_end(ap);
       if ((len != 6) && (len != 7)) exit(1);

       if (snprintf(buf, 3, "hello") != 5 || strcmp(buf, "he") != 0) exit(1);

       exit(0);
}
main() { foo("hello\n"); }
]])],[el_cv_HAVE_C99_VSNPRINTF=yes],[el_cv_HAVE_C99_VSNPRINTF=no],[el_cv_HAVE_C99_VSNPRINTF=cross])])
if test x"$el_cv_HAVE_C99_VSNPRINTF" = x"yes"; then
	EL_DEFINE(HAVE_C99_VSNPRINTF, [C99 compliant vsnprintf()])
fi

# OpenSSL and Lua frequently need dlopen
AC_CHECK_LIB(dl, dlopen)

# ===================================================================
# Checks for libraries.
# ===================================================================

AC_CHECK_FUNC(socket, cf_result=yes, cf_result=no)
if test "$cf_result" = no; then
	AC_CHECK_LIB(socket, socket)
fi

AC_CHECK_FUNC(setsockopt, cf_result=yes, cf_result=no)
if test "$cf_result" = no; then
	AC_CHECK_LIB(socket, setsockopt)
fi

AC_CHECK_FUNC(gethostbyname, cf_result=yes, cf_result=no)
if test "$cf_result" = no; then
	AC_CHECK_LIB(socket, gethostbyname, cf_result=yes, cf_result=no)
	if test "$cf_result" = no; then
		AC_CHECK_LIB(nsl, gethostbyname)
	else
		test -z "`echo $LIBS | grep -- -lsocket`" && LIBS="$LIBS -lsocket"
	fi
fi

# ===================================================================
# Checks for packaging specific options.
# ===================================================================

AC_ARG_WITH(xterm, [  --with-xterm            how to invoke the X terminal emulator],
            [ if test "$withval" != no && test "$withval" != yes; then
		AC_DEFINE_UNQUOTED(XTERM, "$withval", [How to invoke XTerm])
	      fi ])

# ===================================================================
# Checks for a libraries, optional even if installed.
# ===================================================================

dnl EL_CHECK_OPTIONAL_LIBRARY(define, name, header, lib, function)
AC_DEFUN([EL_CHECK_OPTIONAL_LIBRARY],
[
	AC_MSG_CHECKING([for $2 support])

	if test "[$]$1" != no; then
		AC_MSG_RESULT(yes)
		EL_SAVE_FLAGS
		if test -n "$withval" && test -d "$withval"; then
			# Be a little more careful when setting
			# include and lib directories. This way
			# $withval will work when includes are
			# there but the library is in the common
			# /usr/lib ... Does the right thing when
			# looking for gc on Debian.
			if test -d "$withval/include"; then
				CFLAGS="$CFLAGS -I$withval/include"
				CPPFLAGS="$CPPFLAGS -I$withval/include"
			else
				CFLAGS="$CFLAGS -I$withval"
				CPPFLAGS="$CPPFLAGS -I$withval"
			fi
			if test -d "$withval/lib"; then
				LDFLAGS="$LDFLAGS -L$withval/lib"
			fi
		fi

		AC_CHECK_HEADERS([$3], [$1=yes], [$1=no; break;])
		if test "[$]$1" = yes; then
			AC_CHECK_LIB([$4], [$5], [$1=yes], [$1=no])
		fi

		if test "[$]$1" = yes; then
			EL_CONFIG([$1], [$2])
			LIBS="-l$4 $LIBS"
		else
			if test -n "[$]WITHVAL_$1" &&
			   test "x[$]WITHVAL_$1" != xno; then
				AC_MSG_ERROR([$2 not found])
			fi
			EL_RESTORE_FLAGS
		fi
	else
		AC_MSG_RESULT(disabled)
	fi
])

dnl EL_CONFIG_OPTIONAL_LIBRARY(define, name, header, lib, function, confhelp)
AC_DEFUN([EL_CONFIG_OPTIONAL_LIBRARY],
[
	if test "x[$]$1" != xno; then $1=yes; fi
	WITHVAL_$1=

	AC_ARG_WITH([$2], [$6], [WITHVAL_$1="[$]withval"])
	if test "x[$]WITHVAL_$1" = xno; then $1=no; fi
	if test "x[$]WITHVAL_$1" = xyes; then $1=yes; fi

	EL_CHECK_OPTIONAL_LIBRARY([$1], [$2], [$3], [$4], [$5])

	EL_LOG_CONFIG([$1], [$2], [])
])

EL_CONFIG_OPTIONAL_LIBRARY(CONFIG_GPM, gpm, gpm.h, gpm, Gpm_Open,
	[  --without-gpm           disable gpm (mouse) support])


EL_CONFIG_OPTIONAL_LIBRARY(CONFIG_TERMINFO, terminfo, term.h, tinfo, setupterm,
	[  --with-terminfo         enable terminfo support])

# ELinks calls deflateInit2 with windowBits = MAX_WBITS | 32, to
# enable automatic decoding of both zlib and gzip headers.  This
# feature was added in zlib 1.2.0.2; earlier versions return an error.
# The gzclearerr function was also added in zlib 1.2.0.2, so check for
# that, even though ELinks does not actually call gzclearerr.
EL_CONFIG_OPTIONAL_LIBRARY(CONFIG_GZIP, zlib, zlib.h, z, gzclearerr,
	[  --without-zlib          disable zlib support])

EL_CONFIG_OPTIONAL_LIBRARY(CONFIG_BZIP2, bzlib, bzlib.h, bz2, BZ2_bzReadOpen,
	[  --without-bzlib         disable bzlib support])

EL_CONFIG_OPTIONAL_LIBRARY(CONFIG_ZSTD, zstd, zstd.h, zstd, ZSTD_createDCtx,
	[  --with-zstd             enable experimental zstd support])

# ===================================================================
# brotli
# ===================================================================

BROTLI_CFLAGS=
BROTLI_LIBS=
CONFIG_BROTLI=no
enable_brotli=no

AC_ARG_WITH(brotli, [  --with-brotli           enable brotli],
            [ if test "x$withval" != xno; then enable_brotli=yes; fi ])

if test "$enable_brotli" = no; then
	AC_MSG_CHECKING([[for brotli]])
	AC_MSG_RESULT([[disabled]])
else
	AC_MSG_CHECKING([[for brotli in pkg-config]])
	if $PKG_CONFIG $pkg_config_static libbrotlidec; then
		BROTLI_CFLAGS=`$PKG_CONFIG $pkg_config_static --cflags libbrotlidec`
		BROTLI_LIBS=`$PKG_CONFIG $pkg_config_static --libs libbrotlidec`
		LIBS="$BROTLI_LIBS $LIBS"
		CONFIG_BROTLI=yes
		AC_DEFINE([CONFIG_BROTLI], [1], [Define as 1 to use the libbrotli library.])
		AC_MSG_RESULT([[yes]])
	else
		enable_brotli=no
	fi
fi
AC_SUBST(BROTLI_CFLAGS)
AC_SUBST(BROTLI_LIBS)
EL_LOG_CONFIG([CONFIG_BROTLI], [[brotli]], [[$enable_brotli]])

# LZMA disabled by default, because of little usability and compilation problems
# with new xz
EL_CONFIG_OPTIONAL_LIBRARY(CONFIG_LZMA, lzma, lzma.h, lzma, lzma_code,
	[  --with-lzma             enable lzma encoding support])

EL_CONFIG_OPTIONAL_LIBRARY(CONFIG_IDN, idn, idna.h, idn, stringprep_check_version,
	[  --without-idn           disable international domain names support])

# ===================================================================
# Check for GSSAPI, optional even if installed.
# ===================================================================

enable_gssapi="no";

AC_ARG_WITH(gssapi, [  --with-gssapi           enable GSSAPI support],
            [ if test "x$withval" != xno; then enable_gssapi=yes; fi ])

AC_MSG_CHECKING([for GSSAPI])

if test "$enable_gssapi" = "yes"; then
	AC_MSG_RESULT(yes)
	GSSAPI_CFLAGS=`krb5-config --cflags gssapi`
	GSSAPI_LIBS=`krb5-config --libs gssapi`
	CFLAGS="$GSSAPI_CFLAGS $CFLAGS"
	LIBS="$GSSAPI_LIBS $LIBS"
	EL_CONFIG(CONFIG_GSSAPI, [GssApi])
else
	AC_MSG_RESULT(no)
fi

AC_SUBST(CONFIG_GSSAPI)

# ===================================================================
# Bookmark and XBEL support
# ===================================================================

EL_SAVE_FLAGS

EL_ARG_ENABLE(CONFIG_BOOKMARKS, bookmarks, [Bookmarks],
	      [  --disable-bookmarks     disable bookmark support])

# Check whether --enable-xbel or --disable-xbel was given.
if test "x${enable_xbel}" != xno; then
	AC_CHECK_HEADERS(expat.h, HAVE_LIBEXPAT=yes, HAVE_LIBEXPAT=no)

	if test "$HAVE_LIBEXPAT" = yes; then
		AC_CHECK_LIB(expat, XML_ParserCreate, HAVE_LIBEXPAT=yes, HAVE_LIBEXPAT=no)
		if test "$HAVE_LIBEXPAT" = yes; then
			LIBS="$LIBS -lexpat"
		fi
	fi
fi


EL_ARG_DEPEND(CONFIG_XBEL_BOOKMARKS, xbel, [CONFIG_BOOKMARKS:yes HAVE_LIBEXPAT:yes],
	      [XBEL bookmarks],
	      [  --disable-xbel          disable XBEL bookmark support (requires expat)])

if test "$CONFIG_XBEL_BOOKMARKS" != yes; then
	EL_RESTORE_FLAGS
fi

# ===================================================================
# Checks for BSD sysmouse
# ===================================================================

HAVE_SYSMOUSE_HEADER="no"

# Either of these header files provides the (same) sysmouse interface
AC_CHECK_HEADERS(sys/consio.h machine/console.h, [HAVE_SYSMOUSE_HEADER="yes"])

# ===================================================================
# Checks for OS/2
# ===================================================================

if test "$CONFIG_OS_OS2" = yes; then
	EL_CONFIG_OS_OS2
fi

# ===================================================================
# Checks for Win32
# ===================================================================

if test "$CONFIG_OS_WIN32" = yes; then
	EL_CONFIG_OS_WIN32
fi

# ===================================================================
# Check for MuJS
# ===================================================================

AC_ARG_WITH([mujs],
	[AS_HELP_STRING([--with-mujs],
		[enable MuJS engine])])

CONFIG_MUJS=

case "$with_mujs" in
	"" | no)
		# The user specified --without-mujs.
		AC_MSG_CHECKING([for MuJS])
		AC_MSG_RESULT([disabled])
		CONFIG_MUJS="no"
		;;
	yes)
		;;
	*)
		;;
esac

if test "x$CONFIG_MUJS" = x; then
	AC_MSG_CHECKING([for MuJS in pkg-config])
	if $PKG_CONFIG $pkg_config_static --cflags --libs mujs > /dev/null 2>&AS_MESSAGE_LOG_FD; then
		DB_LOCALSTORAGE_LIBS="$($PKG_CONFIG $pkg_config_static --libs sqlite3)"
		XMLPLUSPLUS_LIBS="$($PKG_CONFIG $pkg_config_static --libs libxml++-5.0)"
		MUJS_LIBS="$($PKG_CONFIG $pkg_config_static --libs mujs) $DB_LOCALSTORAGE_LIBS $XMLPLUSPLUS_LIBS"
		DB_LOCALSTORAGE_CFLAGS="$($PKG_CONFIG $pkg_config_static --cflags sqlite3)"
		XMLPLUSPLUS_CFLAGS="$($PKG_CONFIG $pkg_config_static --cflags libxml++-5.0)"
		MUJS_CFLAGS="$($PKG_CONFIG $pkg_config_static --cflags mujs) $DB_LOCALSTORAGE_CFLAGS $XMLPLUSPLUS_CFLAGS"

		LIBS="$LIBS $MUJS_LIBS $LIBS_X"
		CPPFLAGS="$CPPFLAGS_X $MUJS_CFLAGS"
		CFLAGS="$CFLAGS $MUJS_CFLAGS"
		CONFIG_MUJS=yes
		AC_MSG_RESULT([yes])
	else
		AC_MSG_RESULT([no])
	fi
fi


# ===================================================================
# Check for QuickJS
# ===================================================================

AC_ARG_WITH([quickjs],
	[AS_HELP_STRING([--with-quickjs],
		[enable Quickjs engine])])

CONFIG_QUICKJS=

case "$with_quickjs" in
	"" | no)
		# The user specified --without-quickjs.
		AC_MSG_CHECKING([for QuickJS])
		AC_MSG_RESULT([disabled])
		CONFIG_QUICKJS="no"
		;;
	yes)
		;;
	*)
		;;
esac

if test "x$CONFIG_QUICKJS" = x; then
	AC_MSG_CHECKING([for QuickJS])
	AC_LINK_IFELSE(
		[AC_LANG_PROGRAM([[
			#include <quickjs/quickjs.h>
		]], [])],
		[CONFIG_QUICKJS=yes
		 AC_MSG_RESULT([yes])],
		[AC_MSG_RESULT([not found])]
	)

	if test "x$CONFIG_QUICKJS" = xyes; then
		DB_LOCALSTORAGE_LIBS="$($PKG_CONFIG $pkg_config_static --libs sqlite3)"
		XMLPLUSPLUS_LIBS="$($PKG_CONFIG $pkg_config_static --libs libxml++-5.0)"
		DB_LOCALSTORAGE_CFLAGS="$($PKG_CONFIG $pkg_config_static --cflags sqlite3)"
		XMLPLUSPLUS_CFLAGS="$($PKG_CONFIG $pkg_config_static --cflags libxml++-5.0)"

		CFLAGS="$CFLAGS $DB_LOCALSTORAGE_CFLAGS $XMLPLUSPLUS_CFLAGS"
		QUICKJS_LIB="/usr/local/lib/quickjs/libquickjs.a"

		TMPIFS="$IFS"
		IFS=:
		for p in "$LIBRARY_PATH"; do
			if test -f "$p/quickjs/libquickjs.a"; then
				QUICKJS_LIB="$p/quickjs/libquickjs.a"
				break
			fi
		done
		IFS="$TMPIFS"

		LIBS="$LIBS $DB_LOCALSTORAGE_LIBS $XMLPLUSPLUS_LIBS $QUICKJS_LIB"
	else
		AC_MSG_RESULT([no])
	fi
fi


# ===================================================================
# Check for SpiderMonkey, optional even if installed.
# ===================================================================

# This option sets the $with_spidermonkey variable.
AC_ARG_WITH([spidermonkey],
	[AS_HELP_STRING([--with-spidermonkey],
		[enable SpiderMonkey Mozilla Javascript engine])])

# CONFIG_SPIDERMONKEY is initially blank.  We change it to "yes" or "no"
# when we know for sure whether we're going to use SpiderMonkey or not.
# (features.conf is not supposed to define it.)
CONFIG_SPIDERMONKEY=
CONFIG_XML=
CONFIG_SCRIPTING_SPIDERMONKEY=
EL_SAVE_FLAGS

# ===================================================================
# Optional Spidermonkey-based ECMAScript browser scripting
# ===================================================================

AC_ARG_ENABLE(sm-scripting,
	      [  --enable-sm-scripting   enable ECMAScript browser scripting],
	      [if test "$enableval" != no; then enableval="yes"; fi
	       CONFIG_SCRIPTING_SPIDERMONKEY="$enableval";])

case "$with_spidermonkey" in
	"" | no)
		# The user specified --without-spidermonkey.
		# That overrides the other SpiderMonkey options.
		AC_MSG_CHECKING([for SpiderMonkey])
		AC_MSG_RESULT([disabled])
		CONFIG_SPIDERMONKEY="no"
		;;
	yes)
		CONFIG_SPIDERMONKEY="yes"
		;;
	*)
		AC_MSG_WARN([This version of ELinks does not support --with-spidermonkey=DIRECTORY.])
		;;
esac

SPIDERMONKEY_FOUND=

if test "x$CONFIG_SPIDERMONKEY" = xyes ||
   test "x$CONFIG_SCRIPTING_SPIDERMONKEY" = xyes; then
	package=mozjs-102
	AC_MSG_CHECKING([for SpiderMonkey (mozjs-102) in pkg-config $package])
	if $PKG_CONFIG $pkg_config_static --cflags --libs $package > /dev/null 2>&AS_MESSAGE_LOG_FD; then
		DB_LOCALSTORAGE_LIBS="$($PKG_CONFIG $pkg_config_static --libs sqlite3)"
		XMLPLUSPLUS_LIBS="$($PKG_CONFIG $pkg_config_static --libs libxml++-5.0)"
		SPIDERMONKEY_LIBS="$($PKG_CONFIG $pkg_config_static --libs $package) $DB_LOCALSTORAGE_LIBS $XMLPLUSPLUS_LIBS"
		DB_LOCALSTORAGE_CFLAGS="$($PKG_CONFIG $pkg_config_static --cflags sqlite3)"
		XMLPLUSPLUS_CFLAGS="$($PKG_CONFIG $pkg_config_static --cflags libxml++-5.0)"
		SPIDERMONKEY_CFLAGS="$($PKG_CONFIG $pkg_config_static --cflags $package) $DB_LOCALSTORAGE_CFLAGS $XMLPLUSPLUS_CFLAGS"

		LIBS="$SPIDERMONKEY_LIBS $LIBS_X"
		CPPFLAGS="$CPPFLAGS_X $SPIDERMONKEY_CFLAGS"
		SPIDERMONKEY_FOUND=yes
		AC_MSG_RESULT([yes])
	else
		AC_MSG_RESULT([no])
	fi
fi

if test -z "$SPIDERMONKEY_FOUND"; then
	# Didn't find SpiderMonkey anywhere.
	CONFIG_SPIDERMONKEY=no
	CONFIG_SCRIPTING_SPIDERMONKEY=no
fi

EL_RESTORE_FLAGS

if test "x$CONFIG_SPIDERMONKEY" = xyes; then
	CONFIG_XML=yes
	EL_CONFIG(CONFIG_ECMASCRIPT_SMJS, [SpiderMonkey document scripting])
else
	CONFIG_ECMASCRIPT_SMJS=no
fi

EL_CONFIG_DEPENDS(CONFIG_ECMASCRIPT, [CONFIG_ECMASCRIPT_SMJS CONFIG_MUJS CONFIG_QUICKJS CONFIG_SCRIPTING_SPIDERMONKEY], [ECMAScript (JavaScript)])
AC_SUBST(CONFIG_ECMASCRIPT_SMJS)

if test "x$CONFIG_ECMASCRIPT_SMJS" = xyes &&
   test "x$HAVE_JS_TRIGGEROPERATIONCALLBACK" = xyes &&
   test "x$HAVE_SETITIMER" = xyes; then
	EL_CONFIG(CONFIG_ECMASCRIPT_SMJS_HEARTBEAT, [ECMAScript heartbeat support])
else
	CONFIG_ECMASCRIPT_SMJS_HEARTBEAT=no
fi
AC_SUBST(CONFIG_ECMASCRIPT_SMJS_HEARTBEAT)

if test "x$CONFIG_SCRIPTING_SPIDERMONKEY" = xyes; then
	EL_CONFIG(CONFIG_SCRIPTING_SPIDERMONKEY, [SpiderMonkey])
else
	CONFIG_SCRIPTING_SPIDERMONKEY=no
fi