1 # relocatable.m4 serial 7 (gettext-0.16)
2 dnl Copyright (C) 2003, 2005-2006 Free Software Foundation, Inc.
3 dnl This file is free software; the Free Software Foundation
4 dnl gives unlimited permission to copy and/or distribute it,
5 dnl with or without modifications, as long as this notice is preserved.
9 dnl Support for relocateble programs.
10 AC_DEFUN([AC_RELOCATABLE],
12 AC_REQUIRE([AC_RELOCATABLE_BODY])
13 if test $RELOCATABLE = yes; then
14 AC_LIBOBJ([relocatable])
17 dnl The guts of AC_RELOCATABLE. Needs to be expanded only once.
18 AC_DEFUN([AC_RELOCATABLE_BODY],
20 AC_REQUIRE([AC_PROG_INSTALL])
21 dnl This AC_BEFORE invocation leads to unjustified autoconf warnings
22 dnl when AC_RELOCATABLE_BODY is invoked more than once.
23 dnl We need this AC_BEFORE because AC_PROG_INSTALL is documented to
24 dnl overwrite earlier settings of INSTALL and INSTALL_PROGRAM (even
25 dnl though in autoconf-2.52..2.60 it doesn't do so), but we want this
26 dnl macro's setting of INSTALL_PROGRAM to persist.
27 AC_BEFORE([AC_PROG_INSTALL],[AC_RELOCATABLE_BODY])
28 AC_REQUIRE([AC_LIB_LIBPATH])
29 AC_REQUIRE([AC_RELOCATABLE_LIBRARY])
30 AC_REQUIRE([AC_EXEEXT])
32 use_elf_origin_trick=no
33 if test $RELOCATABLE = yes; then
34 # --enable-relocatable implies --disable-rpath
36 AC_DEFINE([ENABLE_RELOCATABLE], 1,
37 [Define to 1 if the package shall run at any location in the filesystem.])
38 AC_CHECK_HEADERS([unistd.h mach-o/dyld.h])
39 AC_CHECK_FUNCS([_NSGetExecutablePath])
41 mingw*) is_noop=yes ;;
42 linux*) use_elf_origin_trick=yes ;;
44 if test $is_noop = yes; then
45 SET_RELOCATABLE="RELOCATABLE_LDFLAGS = :"
47 if test $use_elf_origin_trick = yes; then
48 dnl Use the dynamic linker's support for relocatable programs.
50 /*) reloc_ldflags="$ac_aux_dir/reloc-ldflags" ;;
51 *) reloc_ldflags="\$(top_builddir)/$ac_aux_dir/reloc-ldflags" ;;
53 SET_RELOCATABLE="RELOCATABLE_LDFLAGS = \"$reloc_ldflags\" \"\$(host)\" \"\$(RELOCATABLE_LIBRARY_PATH)\""
55 dnl Unfortunately we cannot define INSTALL_PROGRAM to a command
56 dnl consisting of more than one word - libtool doesn't support this.
57 dnl So we abuse the INSTALL_PROGRAM_ENV hook, originally meant for the
58 dnl 'install-strip' target.
59 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\""
61 /*) INSTALL_PROGRAM="$ac_aux_dir/install-reloc" ;;
62 *) INSTALL_PROGRAM="\$(top_builddir)/$ac_aux_dir/install-reloc" ;;
69 AC_SUBST([SET_RELOCATABLE])
70 AM_CONDITIONAL([RELOCATABLE_VIA_LD],
71 [test $is_noop = yes || test $use_elf_origin_trick = yes])
74 dnl Support for relocatable libraries.
75 AC_DEFUN([AC_RELOCATABLE_LIBRARY],
77 AC_REQUIRE([AC_RELOCATABLE_NOP])
78 dnl Easier to put this here once, instead of into the DEFS of each Makefile.
79 if test "X$prefix" = "XNONE"; then
80 reloc_final_prefix="$ac_default_prefix"
82 reloc_final_prefix="$prefix"
84 AC_DEFINE_UNQUOTED([INSTALLPREFIX], ["${reloc_final_prefix}"],
85 [Define to the value of ${prefix}, as a string.])
88 dnl Support for relocatable packages for which it is a nop.
89 AC_DEFUN([AC_RELOCATABLE_NOP],
91 AC_MSG_CHECKING([whether to activate relocatable installation])
92 AC_ARG_ENABLE(relocatable,
93 [ --enable-relocatable install a package that can be moved in the filesystem],
94 [if test "$enableval" != no; then
100 AC_SUBST(RELOCATABLE)
101 AC_MSG_RESULT([$RELOCATABLE])
104 dnl Determine the platform dependent parameters needed to use relocatability:
106 AC_DEFUN([AC_LIB_LIBPATH],
108 AC_REQUIRE([AC_LIB_PROG_LD]) dnl we use $LD
109 AC_REQUIRE([AC_CANONICAL_HOST]) dnl we use $host
110 AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT]) dnl we use $ac_aux_dir
111 AC_CACHE_CHECK([for shared library path variable], acl_cv_libpath, [
113 ${CONFIG_SHELL-/bin/sh} "$ac_aux_dir/config.libpath" "$host" > conftest.sh
116 acl_cv_libpath=${acl_cv_shlibpath_var:-none}
118 shlibpath_var="$acl_cv_shlibpath_var"