Mercurial > hg > CbC > CbC_gcc
annotate libssp/configure.ac @ 158:494b0b89df80 default tip
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| author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Mon, 25 May 2020 18:13:55 +0900 |
| parents | 1830386684a0 |
| children |
| 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 | |
| 5 AC_INIT(libssp, 1.0) | |
| 6 AC_CONFIG_SRCDIR(ssp.c) | |
| 7 AC_CANONICAL_SYSTEM | |
| 8 ACX_NONCANONICAL_TARGET | |
| 9 | |
|
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10 AM_INIT_AUTOMAKE([no-dist]) |
| 0 | 11 |
| 12 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) | |
| 13 AC_ARG_ENABLE(version-specific-runtime-libs, | |
| 14 [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ], | |
| 15 [case "$enableval" in | |
| 16 yes) version_specific_libs=yes ;; | |
| 17 no) version_specific_libs=no ;; | |
| 18 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);; | |
| 19 esac], | |
| 20 [version_specific_libs=no]) | |
| 21 AC_MSG_RESULT($version_specific_libs) | |
| 22 | |
| 23 AM_MAINTAINER_MODE | |
| 24 | |
| 25 GCC_NO_EXECUTABLES | |
| 26 | |
| 27 AM_ENABLE_MULTILIB(, ..) | |
| 28 | |
| 29 target_alias=${target_alias-$host_alias} | |
| 30 AC_SUBST(target_alias) | |
| 31 | |
| 32 AC_CONFIG_HEADERS(config.h) | |
| 33 | |
| 34 AC_LANG_C | |
| 35 # The same as in boehm-gc and libstdc++. Have to borrow it from there. | |
| 36 # We must force CC to /not/ be precious variables; otherwise | |
| 37 # the wrong, non-multilib-adjusted value will be used in multilibs. | |
| 38 # As a side effect, we have to subst CFLAGS ourselves. | |
| 39 | |
| 40 m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS]) | |
| 41 m4_define([_AC_ARG_VAR_PRECIOUS],[]) | |
| 42 AC_PROG_CC | |
|
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43 m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS]) |
| 0 | 44 |
| 45 AC_SUBST(CFLAGS) | |
| 46 | |
| 47 if test "x$GCC" != "xyes"; then | |
| 48 AC_MSG_ERROR([libssp must be built with GCC]) | |
| 49 fi | |
| 50 AC_PROG_CPP | |
| 51 | |
| 52 AC_MSG_CHECKING([whether -fstack-protector works]) | |
| 53 save_CFLAGS="$CFLAGS" | |
| 54 CFLAGS="$CFLAGS -fstack-protector -Werror" | |
| 55 AC_TRY_COMPILE([ | |
| 56 void __attribute__((noinline)) bar (char *x) | |
| 57 { | |
| 58 __builtin_memset (x, 0, 64); | |
| 59 }],[char buf[64]; bar (buf);], | |
| 60 [AC_MSG_RESULT(yes)], | |
| 61 [AC_MSG_RESULT(no)]) | |
| 62 CFLAGS="$save_CFLAGS" | |
| 63 | |
| 131 | 64 # Add CET specific flags if CET is enabled |
| 65 GCC_CET_FLAGS(CET_FLAGS) | |
| 66 XCFLAGS="$XCFLAGS $CET_FLAGS" | |
| 67 AC_SUBST(XCFLAGS) | |
| 68 | |
| 0 | 69 AC_MSG_CHECKING([whether hidden visibility is supported]) |
| 70 AC_TRY_COMPILE([ | |
| 71 void __attribute__((visibility ("hidden"))) bar (void) {}],, | |
| 72 [ssp_hidden=yes],[ssp_hidden=no]) | |
| 73 AC_MSG_RESULT($ssp_hidden) | |
| 74 if test x$ssp_hidden = xyes; then | |
| 75 AC_DEFINE([HAVE_HIDDEN_VISIBILITY],[1],[__attribute__((visibility ("hidden"))) supported]) | |
| 76 fi | |
| 77 | |
| 78 AC_MSG_CHECKING([whether symbol versioning is supported]) | |
| 111 | 79 AC_ARG_ENABLE(symvers, |
| 80 AS_HELP_STRING([--disable-symvers], | |
| 81 [disable symbol versioning for libssp]), | |
| 82 ssp_use_symver=$enableval, | |
| 83 ssp_use_symver=yes) | |
| 84 if test "x$ssp_use_symver" != xno; then | |
| 85 if test x$gcc_no_link = xyes; then | |
| 86 # If we cannot link, we cannot build shared libraries, so do not use | |
| 87 # symbol versioning. | |
| 88 ssp_use_symver=no | |
| 89 else | |
| 90 save_LDFLAGS="$LDFLAGS" | |
| 91 LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map" | |
| 92 cat > conftest.map <<EOF | |
|
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parents:
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93 FOO_1.0 { |
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94 global: *foo*; bar; local: *; |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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95 }; |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
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96 EOF |
| 111 | 97 AC_TRY_LINK([int foo;],[],[ssp_use_symver=gnu],[ssp_use_symver=no]) |
| 98 if test x$ssp_use_symver = xno; then | |
| 99 case "$target_os" in | |
| 100 solaris2*) | |
| 101 LDFLAGS="$save_LDFLAGS" | |
| 102 LDFLAGS="$LDFLAGS -fPIC -shared -Wl,-M,./conftest.map" | |
| 103 # Sun ld cannot handle wildcards and treats all entries as undefined. | |
| 104 cat > conftest.map <<EOF | |
|
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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changeset
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105 FOO_1.0 { |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
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changeset
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106 global: foo; local: *; |
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f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
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107 }; |
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f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
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108 EOF |
| 111 | 109 AC_TRY_LINK([int foo;],[],[ssp_use_symver=sun],[ssp_use_symver=no]) |
| 110 ;; | |
| 111 esac | |
| 112 fi | |
| 113 LDFLAGS="$save_LDFLAGS" | |
|
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
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114 fi |
| 0 | 115 fi |
| 116 AC_MSG_RESULT($ssp_use_symver) | |
|
67
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
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117 AM_CONDITIONAL(LIBSSP_USE_SYMVER, [test "x$ssp_use_symver" != xno]) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
118 AM_CONDITIONAL(LIBSSP_USE_SYMVER_GNU, [test "x$ssp_use_symver" = xgnu]) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
119 AM_CONDITIONAL(LIBSSP_USE_SYMVER_SUN, [test "x$ssp_use_symver" = xsun]) |
| 0 | 120 |
|
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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diff
changeset
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121 AC_CHECK_HEADERS(alloca.h malloc.h paths.h syslog.h string.h unistd.h fcntl.h stdio.h limits.h) |
| 0 | 122 |
| 123 if test x$gcc_no_link = xyes; then | |
| 124 # Presume the ISO C functions are available; add target-specific | |
| 125 # configuration here if required. | |
| 126 AC_DEFINE(HAVE_STRNCPY) | |
| 127 AC_DEFINE(HAVE_STRNCAT) | |
| 128 else | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
129 AC_CHECK_FUNCS(memmove mempcpy strncpy strncat) |
| 0 | 130 fi |
| 131 | |
| 132 AC_MSG_CHECKING([whether vsnprintf is usable]) | |
| 145 | 133 AC_RUN_IFELSE([AC_LANG_PROGRAM([ |
| 0 | 134 #include <stdarg.h> |
| 135 #include <string.h> | |
| 136 #include <stdio.h> | |
| 137 int foo (char *buf, size_t n, const char *fmt, ...) | |
| 138 { | |
| 139 va_list ap; | |
| 140 int ret; | |
| 141 va_start (ap, fmt); | |
| 142 ret = vsnprintf (buf, n, fmt, ap); | |
| 143 va_end (ap); | |
| 144 return ret; | |
| 145 }], | |
| 146 [char buf@<:@8@:>@; memset (buf, 'A', sizeof (buf)); | |
| 147 if (foo (buf, 4, ".%s.", "CDEFG") != 7) | |
| 148 return 1; | |
| 145 | 149 return memcmp (buf, ".CD\0AAAA", sizeof (buf)) != 0;])], |
| 0 | 150 [ssp_have_usable_vsnprintf=define], |
| 151 [ssp_have_usable_vsnprintf=undef], | |
| 152 [ssp_have_usable_vsnprintf=undef]) | |
| 153 if test "x$ssp_have_usable_vsnprintf" = xdefine; then | |
| 154 AC_MSG_RESULT(yes) | |
| 155 AC_DEFINE([HAVE_USABLE_VSNPRINTF],[1],[vsnprintf is present and works]) | |
| 156 else | |
| 157 AC_MSG_RESULT(no) | |
| 158 fi | |
| 159 AC_SUBST(ssp_have_usable_vsnprintf) | |
| 160 | |
| 161 AM_PROG_LIBTOOL | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
162 ACX_LT_HOST_FLAGS |
| 0 | 163 AC_SUBST(enable_shared) |
| 164 AC_SUBST(enable_static) | |
| 165 | |
| 145 | 166 GCC_WITH_TOOLEXECLIBDIR |
| 167 | |
| 0 | 168 # Calculate toolexeclibdir |
| 169 # Also toolexecdir, though it's only used in toolexeclibdir | |
| 170 case ${version_specific_libs} in | |
| 171 yes) | |
| 172 # Need the gcc compiler version to know where to install libraries | |
| 173 # and header files if --enable-version-specific-runtime-libs option | |
| 174 # is selected. | |
| 175 toolexecdir='$(libdir)/gcc/$(target_alias)' | |
| 176 toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)' | |
| 177 ;; | |
| 178 no) | |
| 179 if test -n "$with_cross_host" && | |
| 180 test x"$with_cross_host" != x"no"; then | |
| 181 # Install a library built with a cross compiler in tooldir, not libdir. | |
| 182 toolexecdir='$(exec_prefix)/$(target_alias)' | |
| 145 | 183 case ${with_toolexeclibdir} in |
| 184 no) | |
| 185 toolexeclibdir='$(toolexecdir)/lib' | |
| 186 ;; | |
| 187 *) | |
| 188 toolexeclibdir=${with_toolexeclibdir} | |
| 189 ;; | |
| 190 esac | |
| 0 | 191 else |
| 192 toolexecdir='$(libdir)/gcc-lib/$(target_alias)' | |
| 193 toolexeclibdir='$(libdir)' | |
| 194 fi | |
| 195 multi_os_directory=`$CC -print-multi-os-directory` | |
| 196 case $multi_os_directory in | |
| 197 .) ;; # Avoid trailing /. | |
| 198 *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;; | |
| 199 esac | |
| 200 ;; | |
| 201 esac | |
| 202 AC_SUBST(toolexecdir) | |
| 203 AC_SUBST(toolexeclibdir) | |
| 204 | |
| 205 if test ${multilib} = yes; then | |
| 206 multilib_arg="--enable-multilib" | |
| 207 else | |
| 208 multilib_arg= | |
| 209 fi | |
| 210 | |
| 111 | 211 # Determine what GCC version number to use in filesystem paths. |
| 212 GCC_BASE_VER | |
| 213 | |
| 0 | 214 AC_CONFIG_FILES([Makefile ssp/ssp.h]) |
| 215 AC_OUTPUT |