Mercurial > hg > CbC > CbC_gcc
annotate libgcc/configure.ac @ 88:f214c1d5b862
merge 89
| author | Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Tue, 20 Dec 2011 18:53:46 +0900 |
| parents | f6334be47118 |
| children | 04ced10e8804 |
| rev | line source |
|---|---|
| 0 | 1 dnl Process this file with autoconf to produce a configure script. |
| 2 | |
| 3 sinclude(../config/enable.m4) | |
| 4 sinclude(../config/tls.m4) | |
| 5 sinclude(../config/acx.m4) | |
| 6 sinclude(../config/no-executables.m4) | |
| 7 sinclude(../config/override.m4) | |
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8 sinclude(../config/dfp.m4) |
| 0 | 9 |
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10 AC_PREREQ(2.64) |
| 0 | 11 AC_INIT([GNU C Runtime Library], 1.0,,[libgcc]) |
| 12 AC_CONFIG_SRCDIR([static-object.mk]) | |
| 13 | |
| 14 AC_ARG_WITH(target-subdir, | |
| 15 [ --with-target-subdir=SUBDIR Configuring in a subdirectory for target]) | |
| 16 AC_ARG_WITH(cross-host, | |
| 17 [ --with-cross-host=HOST Configuring with a cross compiler]) | |
| 18 AC_ARG_WITH(ld, | |
| 19 [ --with-ld arrange to use the specified ld (full pathname)]) | |
| 20 | |
| 21 if test "${srcdir}" = "."; then | |
| 22 if test -n "${with_build_subdir}"; then | |
| 23 libgcc_topdir="${srcdir}/../.." | |
| 24 with_target_subdir= | |
| 25 elif test -z "${with_target_subdir}"; then | |
| 26 libgcc_topdir="${srcdir}/.." | |
| 27 else | |
| 28 if test "${with_target_subdir}" != "."; then | |
| 29 libgcc_topdir="${srcdir}/${with_multisrctop}../.." | |
| 30 else | |
| 31 libgcc_topdir="${srcdir}/${with_multisrctop}.." | |
| 32 fi | |
| 33 fi | |
| 34 else | |
| 35 libgcc_topdir="${srcdir}/.." | |
| 36 fi | |
| 37 AC_SUBST(libgcc_topdir) | |
| 38 AC_CONFIG_AUX_DIR($libgcc_topdir) | |
| 39 | |
| 40 AC_ARG_ENABLE(shared, | |
| 41 [ --disable-shared don't provide a shared libgcc], | |
| 42 [ | |
| 43 case $enable_shared in | |
| 44 yes | no) ;; | |
| 45 *) | |
| 46 enable_shared=no | |
| 47 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:," | |
| 48 for pkg in $enableval; do | |
| 49 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then | |
| 50 enable_shared=yes | |
| 51 fi | |
| 52 done | |
| 53 IFS="$ac_save_ifs" | |
| 54 ;; | |
| 55 esac | |
| 56 ], [enable_shared=yes]) | |
| 57 AC_SUBST(enable_shared) | |
| 58 | |
| 59 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) | |
| 60 AC_ARG_ENABLE(version-specific-runtime-libs, | |
| 61 [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ], | |
| 62 [case "$enableval" in | |
| 63 yes) version_specific_libs=yes ;; | |
| 64 no) version_specific_libs=no ;; | |
| 65 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);; | |
| 66 esac], | |
| 67 [version_specific_libs=no]) | |
| 68 AC_MSG_RESULT($version_specific_libs) | |
| 69 | |
| 70 AC_ARG_WITH(slibdir, | |
| 71 [ --with-slibdir=DIR shared libraries in DIR [LIBDIR]], | |
| 72 slibdir="$with_slibdir", | |
| 73 if test "${version_specific_libs}" = yes; then | |
| 74 slibdir='$(libsubdir)' | |
| 75 elif test -n "$with_cross_host" && test x"$with_cross_host" != x"no"; then | |
| 76 slibdir='$(exec_prefix)/$(host_noncanonical)/lib' | |
| 77 else | |
| 78 slibdir='$(libdir)' | |
| 79 fi) | |
| 80 AC_SUBST(slibdir) | |
| 81 | |
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82 # Command-line options. |
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83 # Very limited version of AC_MAINTAINER_MODE. |
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84 AC_ARG_ENABLE([maintainer-mode], |
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85 [AC_HELP_STRING([--enable-maintainer-mode], |
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86 [enable make rules and dependencies not useful (and |
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87 sometimes confusing) to the casual installer])], |
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88 [case ${enable_maintainer_mode} in |
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89 yes) MAINT='' ;; |
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90 no) MAINT='#' ;; |
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91 *) AC_MSG_ERROR([--enable-maintainer-mode must be yes or no]) ;; |
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92 esac |
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93 maintainer_mode=${enableval}], |
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94 [MAINT='#']) |
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95 AC_SUBST([MAINT])dnl |
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96 |
| 0 | 97 AC_PROG_INSTALL |
| 98 | |
| 99 AC_PROG_AWK | |
| 100 # We need awk; bail out if it's missing. | |
| 101 case ${AWK} in | |
| 102 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;; | |
| 103 esac | |
| 104 | |
| 105 AC_CANONICAL_HOST | |
| 106 ACX_NONCANONICAL_HOST | |
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107 ACX_NONCANONICAL_TARGET |
| 0 | 108 GCC_TOPLEV_SUBDIRS |
| 109 | |
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110 # Calculate toolexeclibdir |
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111 # Also toolexecdir, though it's only used in toolexeclibdir |
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112 case ${version_specific_libs} in |
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113 yes) |
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114 # Need the gcc compiler version to know where to install libraries |
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115 # and header files if --enable-version-specific-runtime-libs option |
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116 # is selected. |
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117 toolexecdir='$(libdir)/gcc/$(target_noncanonical)' |
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118 toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)' |
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119 ;; |
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120 no) |
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121 if test -n "$with_cross_host" && |
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122 test x"$with_cross_host" != x"no"; then |
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123 # Install a library built with a cross compiler in tooldir, not libdir. |
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124 toolexecdir='$(exec_prefix)/$(target_noncanonical)' |
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125 toolexeclibdir='$(toolexecdir)/lib' |
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126 else |
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127 toolexecdir='$(libdir)/gcc-lib/$(target_noncanonical)' |
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128 toolexeclibdir='$(libdir)' |
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129 fi |
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130 multi_os_directory=`$CC -print-multi-os-directory` |
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131 case $multi_os_directory in |
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132 .) ;; # Avoid trailing /. |
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133 *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;; |
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134 esac |
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135 ;; |
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136 esac |
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137 AC_SUBST(toolexecdir) |
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138 AC_SUBST(toolexeclibdir) |
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139 |
| 0 | 140 dnl These must be called before AM_PROG_LIBTOOL, because it may want |
| 141 dnl to call AC_CHECK_PROG. | |
| 142 AC_CHECK_TOOL(AR, ar) | |
| 143 AC_CHECK_TOOL(LIPO, lipo, :) | |
| 144 AC_CHECK_TOOL(NM, nm) | |
| 145 AC_CHECK_TOOL(RANLIB, ranlib, :) | |
| 146 AC_CHECK_TOOL(STRIP, strip, :) | |
| 147 AC_PROG_LN_S | |
| 148 | |
| 149 GCC_NO_EXECUTABLES | |
| 150 AC_PROG_CC | |
| 151 AC_PROG_CPP_WERROR | |
| 152 | |
| 153 # Check for decimal float support. | |
| 154 AC_CACHE_CHECK([whether decimal floating point is supported], [libgcc_cv_dfp], | |
| 155 [AC_COMPILE_IFELSE([_Decimal32 x;], [libgcc_cv_dfp=yes], | |
| 156 [libgcc_cv_dfp=no])]) | |
| 157 decimal_float=$libgcc_cv_dfp | |
| 158 AC_SUBST(decimal_float) | |
| 159 | |
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160 GCC_AC_ENABLE_DECIMAL_FLOAT([$host]) |
| 0 | 161 |
| 162 # Check for fixed-point support. | |
| 163 AC_CACHE_CHECK([whether fixed-point is supported], [libgcc_cv_fixed_point], | |
| 164 [AC_COMPILE_IFELSE([_Sat _Fract x;], [libgcc_cv_fixed_point=yes], | |
| 165 [libgcc_cv_fixed_point=no])]) | |
| 166 fixed_point=$libgcc_cv_fixed_point | |
| 167 AC_SUBST(fixed_point) | |
| 168 | |
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169 # Check for assembler CFI support. |
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170 AC_CACHE_CHECK([whether assembler supports CFI directives], [libgcc_cv_cfi], |
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171 [AC_COMPILE_IFELSE( |
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172 [asm("\n\ |
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173 .text\n\ |
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174 .cfi_startproc\n\ |
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175 .cfi_personality 0, symbol\n\ |
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176 .cfi_endproc");], |
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177 [libgcc_cv_cfi=yes], |
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178 [libgcc_cv_cfi=no])]) |
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179 |
| 0 | 180 # Check 32bit or 64bit for x86. |
| 181 case ${host} in | |
| 182 i?86*-*-* | x86_64*-*-*) | |
| 183 cat > conftest.c <<EOF | |
| 184 #ifdef __x86_64__ | |
| 185 host_address=64 | |
| 186 #else | |
| 187 host_address=32 | |
| 188 #endif | |
| 189 EOF | |
| 190 eval `${CC-cc} -E conftest.c | grep host_address=` | |
| 191 rm -f conftest.c | |
| 192 ;; | |
| 193 esac | |
| 194 | |
| 195 # Collect host-machine-specific information. | |
| 196 . ${srcdir}/config.host | |
| 197 | |
| 198 # Check if Solaris/x86 linker supports ZERO terminator unwind entries. | |
| 199 # This is after config.host so we can augment tmake_file. | |
| 200 # Link with -nostartfiles -nodefaultlibs since neither are present while | |
| 201 # building libgcc. | |
| 202 case ${host} in | |
|
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203 i?86-*-solaris2*) |
| 0 | 204 cat > conftest.s <<EOF |
| 205 .section .eh_frame,"a",@unwind | |
| 206 .zero 4 | |
| 207 .section .jcr,"aw",@progbits | |
| 208 .zero 8 | |
| 209 EOF | |
| 210 if AC_TRY_COMMAND(${CC-cc} -shared -nostartfiles -nodefaultlibs -o conftest.so conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
| 211 # configure expects config files in libgcc/config, so need a relative | |
| 212 # path here. | |
| 213 tmake_file="${tmake_file} ../../gcc/config/i386/t-crtstuff" | |
| 214 fi | |
| 215 ;; | |
| 216 esac | |
| 217 | |
| 218 # Check for visibility support. This is after config.host so that | |
| 219 # we can check for asm_hidden_op. | |
| 220 AC_CACHE_CHECK([for __attribute__((visibility("hidden")))], | |
| 221 libgcc_cv_hidden_visibility_attribute, [ | |
| 222 echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1; }' > conftest.c | |
| 223 libgcc_cv_hidden_visibility_attribute=no | |
| 224 if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
| 225 if grep "\\$asm_hidden_op.*foo" conftest.s >/dev/null; then | |
| 226 libgcc_cv_hidden_visibility_attribute=yes | |
| 227 fi | |
| 228 fi | |
| 229 rm -f conftest.* | |
| 230 ]) | |
| 231 | |
| 232 if test $libgcc_cv_hidden_visibility_attribute = yes; then | |
| 233 vis_hide='-fvisibility=hidden -DHIDE_EXPORTS' | |
| 234 else | |
| 235 vis_hide= | |
| 236 fi | |
| 237 AC_SUBST(vis_hide) | |
| 238 | |
| 239 # See if we have thread-local storage. We can only test assembler | |
| 240 # sicne link-time and run-time tests require the newly built | |
| 241 # gcc, which can't be used to build executable due to that libgcc | |
| 242 # is yet to be built here. | |
| 243 GCC_CHECK_CC_TLS | |
| 244 set_have_cc_tls= | |
| 245 if test "$enable_tls $gcc_cv_have_cc_tls" = "yes yes"; then | |
| 246 set_have_cc_tls="-DHAVE_CC_TLS" | |
| 247 fi | |
| 248 AC_SUBST(set_have_cc_tls) | |
| 249 | |
|
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250 # See if we have emulated thread-local storage. |
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251 GCC_CHECK_EMUTLS |
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252 set_use_emutls= |
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253 if test "$enable_tls $gcc_cv_use_emutls" = "yes yes"; then |
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254 set_use_emutls="-DUSE_EMUTLS" |
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255 fi |
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256 AC_SUBST(set_use_emutls) |
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257 |
| 0 | 258 # Conditionalize the makefile for this target machine. |
| 259 tmake_file_= | |
| 260 for f in ${tmake_file} | |
| 261 do | |
| 262 if test -f ${srcdir}/config/$f | |
| 263 then | |
| 264 tmake_file_="${tmake_file_} \$(srcdir)/config/$f" | |
| 265 fi | |
| 266 done | |
| 267 tmake_file="${tmake_file_}" | |
| 268 AC_SUBST(tmake_file) | |
| 269 | |
| 270 # Substitute configuration variables | |
| 271 AC_SUBST(extra_parts) | |
| 272 AC_SUBST(asm_hidden_op) | |
| 273 | |
| 274 # We need multilib support. | |
| 275 AC_CONFIG_FILES([Makefile]) | |
| 276 AC_CONFIG_COMMANDS([default], | |
| 277 [[test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h | |
| 278 if test -n "$CONFIG_FILES"; then | |
| 279 # FIXME: We shouldn't need to set ac_file | |
| 280 ac_file=Makefile | |
| 281 . ${libgcc_topdir}/config-ml.in | |
| 282 fi]], | |
| 283 [[srcdir=${srcdir} | |
| 284 host=${host} | |
| 285 with_target_subdir=${with_target_subdir} | |
| 286 with_multisubdir=${with_multisubdir} | |
| 287 ac_configure_args="--enable-multilib ${ac_configure_args}" | |
| 288 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh} | |
| 289 libgcc_topdir=${libgcc_topdir} | |
| 290 CC="${CC}" | |
| 291 ]]) | |
| 292 AC_OUTPUT |