1# relocatable.m4 serial 3 (gettext-0.15) 2dnl Copyright (C) 2003, 2005 Free Software Foundation, Inc. 3dnl This file is free software; the Free Software Foundation 4dnl gives unlimited permission to copy and/or distribute it, 5dnl with or without modifications, as long as this notice is preserved. 6 7dnl From Bruno Haible. 8 9dnl Support for relocateble programs. 10AC_DEFUN([AC_RELOCATABLE], 11[ 12 AC_REQUIRE([AC_PROG_INSTALL]) 13 AC_BEFORE([AC_PROG_INSTALL],[AC_RELOCATABLE]) 14 AC_REQUIRE([AC_LIB_LIBPATH]) 15 AC_REQUIRE([AC_RELOCATABLE_LIBRARY]) 16 is_noop=no 17 use_elf_origin_trick=no 18 if test $RELOCATABLE = yes; then 19 # --enable-relocatable implies --disable-rpath 20 enable_rpath=no 21 AC_LIBOBJ([relocatable]) 22 AC_DEFINE([ENABLE_RELOCATABLE], 1, 23 [Define to 1 if the package shall run at any location in the filesystem.]) 24 case "$host_os" in 25 mingw*) is_noop=yes ;; 26 linux*) use_elf_origin_trick=yes ;; 27 esac 28 if test $is_noop = yes; then 29 SET_RELOCATABLE="RELOCATABLE_LDFLAGS = :" 30 else 31 if test $use_elf_origin_trick = yes; then 32 dnl Use the dynamic linker's support for relocatable programs. 33 case "$ac_aux_dir" in 34 /*) reloc_ldflags="$ac_aux_dir/reloc-ldflags" ;; 35 *) reloc_ldflags="\$(top_builddir)/$ac_aux_dir/reloc-ldflags" ;; 36 esac 37 SET_RELOCATABLE="RELOCATABLE_LDFLAGS = \"$reloc_ldflags\" \"\$(host)\" \"\$(RELOCATABLE_LIBRARY_PATH)\"" 38 else 39 dnl Unfortunately we cannot define INSTALL_PROGRAM to a command 40 dnl consisting of more than one word - libtool doesn't support this. 41 dnl So we abuse the INSTALL_PROGRAM_ENV hook, originally meant for the 42 dnl 'install-strip' target. 43 SET_RELOCATABLE="INSTALL_PROGRAM_ENV = RELOC_LIBRARY_PATH_VAR=\"$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_INSTALL_PROG=\"$INSTALL_PROGRAM\"" 44 case "$ac_aux_dir" in 45 /*) INSTALL_PROGRAM="$ac_aux_dir/install-reloc" ;; 46 *) INSTALL_PROGRAM="\$(top_builddir)/$ac_aux_dir/install-reloc" ;; 47 esac 48 fi 49 fi 50 else 51 SET_RELOCATABLE= 52 fi 53 AC_SUBST([SET_RELOCATABLE]) 54 AM_CONDITIONAL([RELOCATABLE_VIA_LD], 55 [test $is_noop = yes || test $use_elf_origin_trick = yes]) 56]) 57 58dnl Support for relocatable libraries. 59AC_DEFUN([AC_RELOCATABLE_LIBRARY], 60[ 61 AC_REQUIRE([AC_RELOCATABLE_NOP]) 62 dnl Easier to put this here once, instead of into the DEFS of each Makefile. 63 if test "X$prefix" = "XNONE"; then 64 reloc_final_prefix="$ac_default_prefix" 65 else 66 reloc_final_prefix="$prefix" 67 fi 68 AC_DEFINE_UNQUOTED([INSTALLPREFIX], ["${reloc_final_prefix}"], 69 [Define to the value of ${prefix}, as a string.]) 70]) 71 72dnl Support for relocatable packages for which it is a nop. 73AC_DEFUN([AC_RELOCATABLE_NOP], 74[ 75 AC_MSG_CHECKING([whether to activate relocatable installation]) 76 AC_ARG_ENABLE(relocatable, 77 [ --enable-relocatable install a package that can be moved in the filesystem], 78 [if test "$enableval" != no; then 79 RELOCATABLE=yes 80 else 81 RELOCATABLE=no 82 fi 83 ], RELOCATABLE=no) 84 AC_SUBST(RELOCATABLE) 85 AC_MSG_RESULT([$RELOCATABLE]) 86]) 87 88dnl Determine the platform dependent parameters needed to use relocatability: 89dnl shlibpath_var. 90AC_DEFUN([AC_LIB_LIBPATH], 91[ 92 AC_REQUIRE([AC_LIB_PROG_LD]) dnl we use $LD 93 AC_REQUIRE([AC_CANONICAL_HOST]) dnl we use $host 94 AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT]) dnl we use $ac_aux_dir 95 AC_CACHE_CHECK([for shared library path variable], acl_cv_libpath, [ 96 LD="$LD" \ 97 ${CONFIG_SHELL-/bin/sh} "$ac_aux_dir/config.libpath" "$host" > conftest.sh 98 . ./conftest.sh 99 rm -f ./conftest.sh 100 acl_cv_libpath=${acl_cv_shlibpath_var:-none} 101 ]) 102 shlibpath_var="$acl_cv_shlibpath_var" 103]) 104