# relocatable.m4 serial 5 (gettext-0.15)
dnl Copyright (C) 2003, 2005-2006 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
dnl From Bruno Haible.
dnl Support for relocateble programs.
AC_DEFUN([AC_RELOCATABLE],
[
AC_REQUIRE([AC_PROG_INSTALL])
AC_BEFORE([AC_PROG_INSTALL],[AC_RELOCATABLE])
AC_REQUIRE([AC_LIB_LIBPATH])
AC_REQUIRE([AC_RELOCATABLE_LIBRARY])
AC_REQUIRE([AC_EXEEXT])
is_noop=no
use_elf_origin_trick=no
if test $RELOCATABLE = yes; then
# --enable-relocatable implies --disable-rpath
enable_rpath=no
AC_LIBOBJ([relocatable])
AC_DEFINE([ENABLE_RELOCATABLE], 1,
[Define to 1 if the package shall run at any location in the filesystem.])
AC_CHECK_HEADERS([unistd.h mach-o/dyld.h])
AC_CHECK_FUNCS([_NSGetExecutablePath])
case "$host_os" in
mingw*) is_noop=yes ;;
linux*) use_elf_origin_trick=yes ;;
esac
if test $is_noop = yes; then
SET_RELOCATABLE="RELOCATABLE_LDFLAGS = :"
else
if test $use_elf_origin_trick = yes; then
dnl Use the dynamic linker's support for relocatable programs.
case "$ac_aux_dir" in
/*) reloc_ldflags="$ac_aux_dir/reloc-ldflags" ;;
*) reloc_ldflags="\$(top_builddir)/$ac_aux_dir/reloc-ldflags" ;;
esac
SET_RELOCATABLE="RELOCATABLE_LDFLAGS = \"$reloc_ldflags\" \"\$(host)\" \"\$(RELOCATABLE_LIBRARY_PATH)\""
else
dnl Unfortunately we cannot define INSTALL_PROGRAM to a command
dnl consisting of more than one word - libtool doesn't support this.
dnl So we abuse the INSTALL_PROGRAM_ENV hook, originally meant for the
dnl 'install-strip' target.
SET_RELOCATABLE="INSTALL_PROGRAM_ENV = RELOC_LIBRARY_PATH_VAR=\"$shlibpath_var\" RELOC_LIBRARY_PATH_VALUE=\"\$(RELOCATABLE_LIBRARY_PATH)\" RELOC_PREFIX=\"\$(prefix)\" RELOC_COMPILE_COMMAND=\"\$(CC) \$(CPPFLAGS) \$(CFLAGS) \$(LDFLAGS)\" RELOC_SRCDIR=\"\$(RELOCATABLE_SRC_DIR)\" RELOC_BUILDDIR=\"\$(RELOCATABLE_BUILD_DIR)\" RELOC_CONFIG_H_DIR=\"\$(RELOCATABLE_CONFIG_H_DIR)\" RELOC_EXEEXT=\"\$(EXEEXT)\" RELOC_INSTALL_PROG=\"$INSTALL_PROGRAM\""
case "$ac_aux_dir" in
/*) INSTALL_PROGRAM="$ac_aux_dir/install-reloc" ;;
*) INSTALL_PROGRAM="\$(top_builddir)/$ac_aux_dir/install-reloc" ;;
esac
fi
fi
else
SET_RELOCATABLE=
fi
AC_SUBST([SET_RELOCATABLE])
AM_CONDITIONAL([RELOCATABLE_VIA_LD],
[test $is_noop = yes || test $use_elf_origin_trick = yes])
])
dnl Support for relocatable libraries.
AC_DEFUN([AC_RELOCATABLE_LIBRARY],
[
AC_REQUIRE([AC_RELOCATABLE_NOP])
dnl Easier to put this here once, instead of into the DEFS of each Makefile.
if test "X$prefix" = "XNONE"; then
reloc_final_prefix="$ac_default_prefix"
else
reloc_final_prefix="$prefix"
fi
AC_DEFINE_UNQUOTED([INSTALLPREFIX], ["${reloc_final_prefix}"],
[Define to the value of ${prefix}, as a string.])
])
dnl Support for relocatable packages for which it is a nop.
AC_DEFUN([AC_RELOCATABLE_NOP],
[
AC_MSG_CHECKING([whether to activate relocatable installation])
AC_ARG_ENABLE(relocatable,
[ --enable-relocatable install a package that can be moved in the filesystem],
[if test "$enableval" != no; then
RELOCATABLE=yes
else
RELOCATABLE=no
fi
], RELOCATABLE=no)
AC_SUBST(RELOCATABLE)
AC_MSG_RESULT([$RELOCATABLE])
])
dnl Determine the platform dependent parameters needed to use relocatability:
dnl shlibpath_var.
AC_DEFUN([AC_LIB_LIBPATH],
[
AC_REQUIRE([AC_LIB_PROG_LD]) dnl we use $LD
AC_REQUIRE([AC_CANONICAL_HOST]) dnl we use $host
AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT]) dnl we use $ac_aux_dir
AC_CACHE_CHECK([for shared library path variable], acl_cv_libpath, [
LD="$LD" \
${CONFIG_SHELL-/bin/sh} "$ac_aux_dir/config.libpath" "$host" > conftest.sh
. ./conftest.sh
rm -f ./conftest.sh
acl_cv_libpath=${acl_cv_shlibpath_var:-none}
])
shlibpath_var="$acl_cv_shlibpath_var"
])
