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Diffstat (limited to 'libsigsegv/m4/relocatable.m4')
| -rw-r--r-- | libsigsegv/m4/relocatable.m4 | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/libsigsegv/m4/relocatable.m4 b/libsigsegv/m4/relocatable.m4 new file mode 100644 index 00000000..febd0f5e --- /dev/null +++ b/libsigsegv/m4/relocatable.m4 @@ -0,0 +1,99 @@ +# relocatable.m4 serial 1 (gettext-0.12) +dnl Copyright (C) 2003 Free Software Foundation, Inc. +dnl This file is free software, distributed under the terms of the GNU +dnl General Public License. As a special exception to the GNU General +dnl Public License, this file may be distributed as part of a program +dnl that contains a configuration script generated by Autoconf, under +dnl the same distribution terms as the rest of that program. + +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]) + use_elf_origin_trick=no + if test $RELOCATABLE = yes; then + # --enable-relocatable implies --disable-rpath + enable_rpath=no + AC_LIBOBJ([relocatable]) + AC_DEFINE([ENABLE_RELOCATABLE], 1, + [Define to 1 if the package shall run at any location in the filesystem.]) + case "$host_os" in + linux*) use_elf_origin_trick=yes ;; + esac + 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_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 + else + SET_RELOCATABLE= + fi + AC_SUBST([SET_RELOCATABLE]) + AM_CONDITIONAL([RELOCATABLE_VIA_LD], + [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" +]) |