Add support for cross-compilation (Issue #4897)

[thirdparty/cups.git] / config-scripts / cups-sharedlibs.m4

dnl
dnl Shared library support for CUPS.
dnl
dnl Copyright 2007-2017 by Apple Inc.
dnl Copyright 1997-2005 by Easy Software Products, all rights reserved.
dnl
dnl These coded instructions, statements, and computer programs are the
dnl property of Apple Inc. and are protected by Federal copyright
dnl law.  Distribution and use rights are outlined in the file "LICENSE.txt"
dnl which should have been included with this file.  If this file is
dnl missing or damaged, see the license at "http://www.cups.org/".
dnl

PICFLAG=1
DSOFLAGS="${DSOFLAGS:=}"

AC_ARG_ENABLE(shared, [  --disable-shared        do not create shared libraries])

cupsbase="cups"
LIBCUPSBASE="lib$cupsbase"
LIBCUPSSTATIC="lib$cupsbase.a"

if test x$enable_shared != xno; then
	case "$host_os_name" in
		sunos*)
			LIBCUPS="lib$cupsbase.so.2"
			LIBCUPSCGI="libcupscgi.so.1"
			LIBCUPSIMAGE="libcupsimage.so.2"
			LIBCUPSMIME="libcupsmime.so.1"
			LIBCUPSPPDC="libcupsppdc.so.1"
			DSO="\$(CC)"
			DSOXX="\$(CXX)"
			DSOFLAGS="$DSOFLAGS -Wl,-h\`basename \$@\` -G \$(OPTIM)"
			;;
		linux | gnu | *bsd*)
			LIBCUPS="lib$cupsbase.so.2"
			LIBCUPSCGI="libcupscgi.so.1"
			LIBCUPSIMAGE="libcupsimage.so.2"
			LIBCUPSMIME="libcupsmime.so.1"
			LIBCUPSPPDC="libcupsppdc.so.1"
			DSO="\$(CC)"
			DSOXX="\$(CXX)"
			DSOFLAGS="$DSOFLAGS -Wl,-soname,\`basename \$@\` -shared \$(OPTIM)"
			;;
		darwin*)
			LIBCUPS="lib$cupsbase.2.dylib"
			LIBCUPSCGI="libcupscgi.1.dylib"
			LIBCUPSIMAGE="libcupsimage.2.dylib"
			LIBCUPSMIME="libcupsmime.1.dylib"
			LIBCUPSPPDC="libcupsppdc.1.dylib"
			DSO="\$(CC)"
			DSOXX="\$(CXX)"
			DSOFLAGS="$DSOFLAGS -dynamiclib -single_module -lc"
			;;
		*)
			echo "Warning: shared libraries may not be supported.  Trying -shared"
			echo "         option with compiler."
			LIBCUPS="lib$cupsbase.so.2"
			LIBCUPSCGI="libcupscgi.so.1"
			LIBCUPSIMAGE="libcupsimage.so.2"
			LIBCUPSMIME="libcupsmime.so.1"
			LIBCUPSPPDC="libcupsppdc.so.1"
			DSO="\$(CC)"
			DSOXX="\$(CXX)"
			DSOFLAGS="$DSOFLAGS -Wl,-soname,\`basename \$@\` -shared \$(OPTIM)"
			;;
	esac
else
	PICFLAG=0
	LIBCUPS="lib$cupsbase.a"
	LIBCUPSCGI="libcupscgi.a"
	LIBCUPSIMAGE="libcupsimage.a"
	LIBCUPSMIME="libcupsmime.a"
	LIBCUPSPPDC="libcupsppdc.a"
	DSO=":"
	DSOXX=":"
fi

AC_SUBST(DSO)
AC_SUBST(DSOXX)
AC_SUBST(DSOFLAGS)
AC_SUBST(LIBCUPS)
AC_SUBST(LIBCUPSBASE)
AC_SUBST(LIBCUPSCGI)
AC_SUBST(LIBCUPSIMAGE)
AC_SUBST(LIBCUPSMIME)
AC_SUBST(LIBCUPSPPDC)
AC_SUBST(LIBCUPSSTATIC)

if test x$enable_shared = xno; then
	LINKCUPS="../cups/lib$cupsbase.a"
	LINKCUPSIMAGE="../filter/libcupsimage.a"

	EXTLINKCUPS="-lcups"
	EXTLINKCUPSIMAGE="-lcupsimage"
else
	LINKCUPS="-l${cupsbase}"
	LINKCUPSIMAGE="-lcupsimage"

	EXTLINKCUPS="-lcups"
	EXTLINKCUPSIMAGE="-lcupsimage"
fi

AC_SUBST(EXTLINKCUPS)
AC_SUBST(EXTLINKCUPSIMAGE)
AC_SUBST(LINKCUPS)
AC_SUBST(LINKCUPSIMAGE)

dnl Update libraries for DSOs...
EXPORT_LDFLAGS=""

if test "$DSO" != ":"; then
	# When using DSOs the image libraries are linked to libcupsimage.so
	# rather than to the executables.  This makes things smaller if you
	# are using any static libraries, and it also allows us to distribute
	# a single DSO rather than a bunch...
	DSOLIBS="\$(LIBZ)"
	IMGLIBS=""

	# Tell the run-time linkers where to find a DSO.  Some platforms
	# need this option, even when the library is installed in a
	# standard location...
	case $host_os_name in
                sunos*)
                	# Solaris...
			if test $exec_prefix != /usr; then
				DSOFLAGS="-R$libdir $DSOFLAGS"
				LDFLAGS="$LDFLAGS -R$libdir"
				EXPORT_LDFLAGS="-R$libdir"
			fi
			;;
                *bsd*)
                        # *BSD...
			if test $exec_prefix != /usr; then
				DSOFLAGS="-Wl,-R$libdir $DSOFLAGS"
				LDFLAGS="$LDFLAGS -Wl,-R$libdir"
				EXPORT_LDFLAGS="-Wl,-R$libdir"
			fi
			;;
                linux | gnu)
                        # Linux, and HURD...
			if test $exec_prefix != /usr; then
				DSOFLAGS="-Wl,-rpath,$libdir $DSOFLAGS"
				LDFLAGS="$LDFLAGS -Wl,-rpath,$libdir"
				EXPORT_LDFLAGS="-Wl,-rpath,$libdir"
			fi
			;;
	esac
else
	DSOLIBS=""
	IMGLIBS="\$(LIBZ)"
fi

AC_SUBST(DSOLIBS)
AC_SUBST(IMGLIBS)
AC_SUBST(EXPORT_LDFLAGS)