Mercurial > hg > CbC > CbC_gcc
annotate libssp/configure.ac @ 81:dbfc0d2dde36
minor fix
| author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Sat, 24 Sep 2011 02:43:04 +0900 |
| parents | f6334be47118 |
| children | 04ced10e8804 |
| rev | line source |
|---|---|
| 0 | 1 # Process this file with autoconf to produce a configure script, like so: |
| 2 # | |
| 3 # aclocal -I .. -I ../config && autoconf && autoheader && automake | |
| 4 | |
|
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5 AC_PREREQ(2.64) |
| 0 | 6 AC_INIT(libssp, 1.0) |
| 7 AC_CONFIG_SRCDIR(ssp.c) | |
| 8 AC_CANONICAL_SYSTEM | |
| 9 ACX_NONCANONICAL_TARGET | |
| 10 | |
|
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11 AM_INIT_AUTOMAKE([no-dist]) |
| 0 | 12 |
| 13 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) | |
| 14 AC_ARG_ENABLE(version-specific-runtime-libs, | |
| 15 [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ], | |
| 16 [case "$enableval" in | |
| 17 yes) version_specific_libs=yes ;; | |
| 18 no) version_specific_libs=no ;; | |
| 19 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);; | |
| 20 esac], | |
| 21 [version_specific_libs=no]) | |
| 22 AC_MSG_RESULT($version_specific_libs) | |
| 23 | |
| 24 AM_MAINTAINER_MODE | |
| 25 | |
| 26 GCC_NO_EXECUTABLES | |
| 27 | |
| 28 AM_ENABLE_MULTILIB(, ..) | |
| 29 | |
| 30 target_alias=${target_alias-$host_alias} | |
| 31 AC_SUBST(target_alias) | |
| 32 | |
| 33 AC_CONFIG_HEADERS(config.h) | |
| 34 | |
| 35 AC_LANG_C | |
| 36 # The same as in boehm-gc and libstdc++. Have to borrow it from there. | |
| 37 # We must force CC to /not/ be precious variables; otherwise | |
| 38 # the wrong, non-multilib-adjusted value will be used in multilibs. | |
| 39 # As a side effect, we have to subst CFLAGS ourselves. | |
| 40 | |
| 41 m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS]) | |
| 42 m4_define([_AC_ARG_VAR_PRECIOUS],[]) | |
| 43 AC_PROG_CC | |
|
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44 m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS]) |
| 0 | 45 |
| 46 AC_SUBST(CFLAGS) | |
| 47 | |
| 48 if test "x$GCC" != "xyes"; then | |
| 49 AC_MSG_ERROR([libssp must be built with GCC]) | |
| 50 fi | |
| 51 AC_PROG_CPP | |
| 52 | |
| 53 AC_MSG_CHECKING([whether -fstack-protector works]) | |
| 54 save_CFLAGS="$CFLAGS" | |
| 55 CFLAGS="$CFLAGS -fstack-protector -Werror" | |
| 56 AC_TRY_COMPILE([ | |
| 57 void __attribute__((noinline)) bar (char *x) | |
| 58 { | |
| 59 __builtin_memset (x, 0, 64); | |
| 60 }],[char buf[64]; bar (buf);], | |
| 61 [AC_MSG_RESULT(yes)], | |
| 62 [AC_MSG_RESULT(no)]) | |
| 63 CFLAGS="$save_CFLAGS" | |
| 64 | |
| 65 AC_MSG_CHECKING([whether hidden visibility is supported]) | |
| 66 AC_TRY_COMPILE([ | |
| 67 void __attribute__((visibility ("hidden"))) bar (void) {}],, | |
| 68 [ssp_hidden=yes],[ssp_hidden=no]) | |
| 69 AC_MSG_RESULT($ssp_hidden) | |
| 70 if test x$ssp_hidden = xyes; then | |
| 71 AC_DEFINE([HAVE_HIDDEN_VISIBILITY],[1],[__attribute__((visibility ("hidden"))) supported]) | |
| 72 fi | |
| 73 | |
| 74 AC_MSG_CHECKING([whether symbol versioning is supported]) | |
| 75 if test x$gcc_no_link = xyes; then | |
| 76 # If we cannot link, we cannot build shared libraries, so do not use | |
| 77 # symbol versioning. | |
| 78 ssp_use_symver=no | |
| 79 else | |
|
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80 save_LDFLAGS="$LDFLAGS" |
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81 LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map" |
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82 cat > conftest.map <<EOF |
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83 FOO_1.0 { |
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84 global: *foo*; bar; local: *; |
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85 }; |
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86 EOF |
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87 AC_TRY_LINK([int foo;],[],[ssp_use_symver=gnu],[ssp_use_symver=no]) |
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88 if test x$ssp_use_symver = xno; then |
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89 case "$target_os" in |
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90 solaris2*) |
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91 LDFLAGS="$save_LDFLAGS" |
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92 LDFLAGS="$LDFLAGS -fPIC -shared -Wl,-M,./conftest.map" |
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93 # Sun ld cannot handle wildcards and treats all entries as undefined. |
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94 cat > conftest.map <<EOF |
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95 FOO_1.0 { |
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96 global: foo; local: *; |
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97 }; |
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98 EOF |
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99 AC_TRY_LINK([int foo;],[],[ssp_use_symver=sun],[ssp_use_symver=no]) |
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100 ;; |
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101 esac |
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102 fi |
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103 LDFLAGS="$save_LDFLAGS" |
| 0 | 104 fi |
| 105 AC_MSG_RESULT($ssp_use_symver) | |
|
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106 AM_CONDITIONAL(LIBSSP_USE_SYMVER, [test "x$ssp_use_symver" != xno]) |
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107 AM_CONDITIONAL(LIBSSP_USE_SYMVER_GNU, [test "x$ssp_use_symver" = xgnu]) |
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parents:
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108 AM_CONDITIONAL(LIBSSP_USE_SYMVER_SUN, [test "x$ssp_use_symver" = xsun]) |
| 0 | 109 |
|
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110 AC_CHECK_HEADERS(alloca.h malloc.h paths.h syslog.h string.h unistd.h fcntl.h stdio.h limits.h) |
| 0 | 111 |
| 112 if test x$gcc_no_link = xyes; then | |
| 113 # Presume the ISO C functions are available; add target-specific | |
| 114 # configuration here if required. | |
| 115 AC_DEFINE(HAVE_STRNCPY) | |
| 116 AC_DEFINE(HAVE_STRNCAT) | |
| 117 else | |
|
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f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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118 AC_CHECK_FUNCS(memmove mempcpy strncpy strncat) |
| 0 | 119 fi |
| 120 | |
| 121 AC_MSG_CHECKING([whether vsnprintf is usable]) | |
| 122 AC_RUN_IFELSE(AC_LANG_PROGRAM([ | |
| 123 #include <stdarg.h> | |
| 124 #include <string.h> | |
| 125 #include <stdio.h> | |
| 126 int foo (char *buf, size_t n, const char *fmt, ...) | |
| 127 { | |
| 128 va_list ap; | |
| 129 int ret; | |
| 130 va_start (ap, fmt); | |
| 131 ret = vsnprintf (buf, n, fmt, ap); | |
| 132 va_end (ap); | |
| 133 return ret; | |
| 134 }], | |
| 135 [char buf@<:@8@:>@; memset (buf, 'A', sizeof (buf)); | |
| 136 if (foo (buf, 4, ".%s.", "CDEFG") != 7) | |
| 137 return 1; | |
| 138 return memcmp (buf, ".CD\0AAAA", sizeof (buf)) != 0;]), | |
| 139 [ssp_have_usable_vsnprintf=define], | |
| 140 [ssp_have_usable_vsnprintf=undef], | |
| 141 [ssp_have_usable_vsnprintf=undef]) | |
| 142 if test "x$ssp_have_usable_vsnprintf" = xdefine; then | |
| 143 AC_MSG_RESULT(yes) | |
| 144 AC_DEFINE([HAVE_USABLE_VSNPRINTF],[1],[vsnprintf is present and works]) | |
| 145 else | |
| 146 AC_MSG_RESULT(no) | |
| 147 fi | |
| 148 AC_SUBST(ssp_have_usable_vsnprintf) | |
| 149 | |
| 150 AM_PROG_LIBTOOL | |
|
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151 ACX_LT_HOST_FLAGS |
| 0 | 152 AC_SUBST(enable_shared) |
| 153 AC_SUBST(enable_static) | |
| 154 | |
| 155 # Calculate toolexeclibdir | |
| 156 # Also toolexecdir, though it's only used in toolexeclibdir | |
| 157 case ${version_specific_libs} in | |
| 158 yes) | |
| 159 # Need the gcc compiler version to know where to install libraries | |
| 160 # and header files if --enable-version-specific-runtime-libs option | |
| 161 # is selected. | |
| 162 toolexecdir='$(libdir)/gcc/$(target_alias)' | |
| 163 toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)' | |
| 164 ;; | |
| 165 no) | |
| 166 if test -n "$with_cross_host" && | |
| 167 test x"$with_cross_host" != x"no"; then | |
| 168 # Install a library built with a cross compiler in tooldir, not libdir. | |
| 169 toolexecdir='$(exec_prefix)/$(target_alias)' | |
| 170 toolexeclibdir='$(toolexecdir)/lib' | |
| 171 else | |
| 172 toolexecdir='$(libdir)/gcc-lib/$(target_alias)' | |
| 173 toolexeclibdir='$(libdir)' | |
| 174 fi | |
| 175 multi_os_directory=`$CC -print-multi-os-directory` | |
| 176 case $multi_os_directory in | |
| 177 .) ;; # Avoid trailing /. | |
| 178 *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;; | |
| 179 esac | |
| 180 ;; | |
| 181 esac | |
| 182 AC_SUBST(toolexecdir) | |
| 183 AC_SUBST(toolexeclibdir) | |
| 184 | |
| 185 if test ${multilib} = yes; then | |
| 186 multilib_arg="--enable-multilib" | |
| 187 else | |
| 188 multilib_arg= | |
| 189 fi | |
| 190 | |
| 191 AC_CONFIG_FILES([Makefile ssp/ssp.h]) | |
| 192 AC_OUTPUT |