nexmon – Blame information for rev 1
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1 | office | 1 | # relocatable.m4 serial 17 |
2 | dnl Copyright (C) 2003, 2005-2007, 2009-2011 Free Software Foundation, Inc. |
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3 | dnl This file is free software; the Free Software Foundation |
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4 | dnl gives unlimited permission to copy and/or distribute it, |
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5 | dnl with or without modifications, as long as this notice is preserved. |
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6 | |||
7 | dnl From Bruno Haible. |
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8 | |||
9 | dnl gl_RELOCATABLE([RELOCWRAPPER-DIR]) |
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10 | dnl ---------------------------------------------------------- |
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11 | dnl Support for relocatable programs. |
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12 | dnl Supply RELOCWRAPPER-DIR as the directory where relocwrapper.c may be found. |
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13 | AC_DEFUN([gl_RELOCATABLE], |
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14 | [ |
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15 | AC_REQUIRE([gl_RELOCATABLE_BODY]) |
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16 | gl_RELOCATABLE_LIBRARY |
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17 | : ${RELOCATABLE_CONFIG_H_DIR='$(top_builddir)'} |
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18 | RELOCATABLE_SRC_DIR="\$(top_srcdir)/$gl_source_base" |
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19 | RELOCATABLE_BUILD_DIR="\$(top_builddir)/$gl_source_base" |
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20 | ]) |
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21 | dnl The guts of gl_RELOCATABLE. Needs to be expanded only once. |
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22 | AC_DEFUN([gl_RELOCATABLE_BODY], |
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23 | [ |
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24 | AC_REQUIRE([AC_PROG_INSTALL]) |
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25 | dnl This AC_BEFORE invocation leads to unjustified autoconf warnings |
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26 | dnl when gl_RELOCATABLE_BODY is invoked more than once. |
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27 | dnl We need this AC_BEFORE because AC_PROG_INSTALL is documented to |
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28 | dnl overwrite earlier settings of INSTALL and INSTALL_PROGRAM (even |
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29 | dnl though in autoconf-2.52..2.60 it doesn't do so), but we want this |
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30 | dnl macro's setting of INSTALL_PROGRAM to persist. |
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31 | AC_BEFORE([AC_PROG_INSTALL],[gl_RELOCATABLE_BODY]) |
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32 | AC_REQUIRE([AC_LIB_LIBPATH]) |
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33 | AC_REQUIRE([gl_RELOCATABLE_LIBRARY_BODY]) |
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34 | is_noop=no |
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35 | use_elf_origin_trick=no |
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36 | use_wrapper=no |
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37 | if test $RELOCATABLE = yes; then |
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38 | # --enable-relocatable implies --disable-rpath |
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39 | enable_rpath=no |
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40 | AC_CHECK_HEADERS([mach-o/dyld.h]) |
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41 | AC_CHECK_FUNCS([_NSGetExecutablePath]) |
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42 | case "$host_os" in |
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43 | mingw*) is_noop=yes ;; |
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44 | linux*) use_elf_origin_trick=yes ;; |
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45 | esac |
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46 | if test $is_noop = yes; then |
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47 | RELOCATABLE_LDFLAGS=: |
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48 | AC_SUBST([RELOCATABLE_LDFLAGS]) |
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49 | else |
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50 | if test $use_elf_origin_trick = yes; then |
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51 | dnl Use the dynamic linker's support for relocatable programs. |
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52 | case "$ac_aux_dir" in |
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53 | /*) reloc_ldflags="$ac_aux_dir/reloc-ldflags" ;; |
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54 | *) reloc_ldflags="\$(top_builddir)/$ac_aux_dir/reloc-ldflags" ;; |
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55 | esac |
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56 | RELOCATABLE_LDFLAGS="\"$reloc_ldflags\" \"\$(host)\" \"\$(RELOCATABLE_LIBRARY_PATH)\"" |
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57 | AC_SUBST([RELOCATABLE_LDFLAGS]) |
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58 | else |
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59 | use_wrapper=yes |
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60 | dnl Unfortunately we cannot define INSTALL_PROGRAM to a command |
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61 | dnl consisting of more than one word - libtool doesn't support this. |
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62 | dnl So we abuse the INSTALL_PROGRAM_ENV hook, originally meant for the |
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63 | dnl 'install-strip' target. |
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64 | INSTALL_PROGRAM_ENV="RELOC_LIBRARY_PATH_VAR=\"$shlibpath_var\" RELOC_LIBRARY_PATH_VALUE=\"\$(RELOCATABLE_LIBRARY_PATH)\" RELOC_PREFIX=\"\$(prefix)\" RELOC_DESTDIR=\"\$(DESTDIR)\" 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_STRIP_PROG=\"\$(RELOCATABLE_STRIP)\" RELOC_INSTALL_PROG=\"$INSTALL_PROGRAM\"" |
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65 | AC_SUBST([INSTALL_PROGRAM_ENV]) |
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66 | case "$ac_aux_dir" in |
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67 | /*) INSTALL_PROGRAM="$ac_aux_dir/install-reloc" ;; |
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68 | *) INSTALL_PROGRAM="\$(top_builddir)/$ac_aux_dir/install-reloc" ;; |
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69 | esac |
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70 | fi |
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71 | fi |
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72 | fi |
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73 | AM_CONDITIONAL([RELOCATABLE_VIA_LD], |
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74 | [test $is_noop = yes || test $use_elf_origin_trick = yes]) |
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75 | AM_CONDITIONAL([RELOCATABLE_VIA_WRAPPER], [test $use_wrapper = yes]) |
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76 | |||
77 | dnl RELOCATABLE_LIBRARY_PATH can be set in configure.ac. Default is empty. |
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78 | AC_SUBST([RELOCATABLE_LIBRARY_PATH]) |
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79 | |||
80 | AC_SUBST([RELOCATABLE_CONFIG_H_DIR]) |
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81 | AC_SUBST([RELOCATABLE_SRC_DIR]) |
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82 | AC_SUBST([RELOCATABLE_BUILD_DIR]) |
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83 | |||
84 | dnl Ensure RELOCATABLE_STRIP is defined in Makefiles (at least those |
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85 | dnl generated by automake), with value ':'. |
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86 | RELOCATABLE_STRIP=':' |
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87 | AC_SUBST([RELOCATABLE_STRIP]) |
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88 | ]) |
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89 | |||
90 | dnl Determine the platform dependent parameters needed to use relocatability: |
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91 | dnl shlibpath_var. |
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92 | AC_DEFUN([AC_LIB_LIBPATH], |
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93 | [ |
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94 | AC_REQUIRE([AC_LIB_PROG_LD]) dnl we use $LD |
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95 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl we use $host |
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96 | AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT]) dnl we use $ac_aux_dir |
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97 | AC_CACHE_CHECK([for shared library path variable], [acl_cv_libpath], [ |
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98 | LD="$LD" \ |
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99 | ${CONFIG_SHELL-/bin/sh} "$ac_aux_dir/config.libpath" "$host" > conftest.sh |
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100 | . ./conftest.sh |
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101 | rm -f ./conftest.sh |
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102 | acl_cv_libpath=${acl_cv_shlibpath_var:-none} |
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103 | ]) |
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104 | shlibpath_var="$acl_cv_shlibpath_var" |
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105 | ]) |