Mercurial > hg > CbC > CbC_gcc
annotate libgcc/configure.ac @ 144:8f4e72ab4e11
fix segmentation fault caused by nothing next cur_op to end
| author | Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Sun, 23 Dec 2018 21:23:56 +0900 |
| parents | 84e7813d76e9 |
| children | 1830386684a0 |
| 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) | |
| 111 | 7 sinclude(../config/lib-ld.m4) |
| 0 | 8 sinclude(../config/override.m4) |
| 111 | 9 sinclude(../config/picflag.m4) |
|
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10 sinclude(../config/dfp.m4) |
| 111 | 11 sinclude(../config/unwind_ipinfo.m4) |
| 12 sinclude(../config/gthr.m4) | |
| 13 sinclude(../config/sjlj.m4) | |
| 131 | 14 sinclude(../config/cet.m4) |
| 0 | 15 |
|
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16 AC_PREREQ(2.64) |
| 0 | 17 AC_INIT([GNU C Runtime Library], 1.0,,[libgcc]) |
| 18 AC_CONFIG_SRCDIR([static-object.mk]) | |
| 19 | |
| 111 | 20 # The libgcc should not depend on any header files |
| 21 AC_DEFUN([_AC_INCLUDES_DEFAULT_REQUIREMENTS], | |
| 22 [m4_divert_text([DEFAULTS], | |
| 23 [ac_includes_default='/* none */'])]) | |
| 24 | |
| 0 | 25 AC_ARG_WITH(target-subdir, |
| 26 [ --with-target-subdir=SUBDIR Configuring in a subdirectory for target]) | |
| 27 AC_ARG_WITH(cross-host, | |
| 28 [ --with-cross-host=HOST Configuring with a cross compiler]) | |
| 29 AC_ARG_WITH(ld, | |
| 30 [ --with-ld arrange to use the specified ld (full pathname)]) | |
| 31 | |
| 32 if test "${srcdir}" = "."; then | |
| 33 if test -n "${with_build_subdir}"; then | |
| 34 libgcc_topdir="${srcdir}/../.." | |
| 35 with_target_subdir= | |
| 36 elif test -z "${with_target_subdir}"; then | |
| 37 libgcc_topdir="${srcdir}/.." | |
| 38 else | |
| 39 if test "${with_target_subdir}" != "."; then | |
| 40 libgcc_topdir="${srcdir}/${with_multisrctop}../.." | |
| 41 else | |
| 42 libgcc_topdir="${srcdir}/${with_multisrctop}.." | |
| 43 fi | |
| 44 fi | |
| 45 else | |
| 46 libgcc_topdir="${srcdir}/.." | |
| 47 fi | |
| 48 AC_SUBST(libgcc_topdir) | |
| 49 AC_CONFIG_AUX_DIR($libgcc_topdir) | |
| 111 | 50 AC_CONFIG_HEADER(auto-target.h:config.in) |
| 0 | 51 |
| 52 AC_ARG_ENABLE(shared, | |
| 53 [ --disable-shared don't provide a shared libgcc], | |
| 54 [ | |
| 55 case $enable_shared in | |
| 56 yes | no) ;; | |
| 57 *) | |
| 58 enable_shared=no | |
| 59 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:," | |
| 60 for pkg in $enableval; do | |
| 61 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then | |
| 62 enable_shared=yes | |
| 63 fi | |
| 64 done | |
| 65 IFS="$ac_save_ifs" | |
| 66 ;; | |
| 67 esac | |
| 68 ], [enable_shared=yes]) | |
| 69 AC_SUBST(enable_shared) | |
| 70 | |
| 131 | 71 AC_ARG_ENABLE(gcov, |
| 72 [ --disable-gcov don't provide libgcov and related host tools], | |
| 73 [], [enable_gcov=yes]) | |
| 74 AC_SUBST(enable_gcov) | |
| 75 | |
| 111 | 76 AC_ARG_ENABLE(vtable-verify, |
| 77 [ --enable-vtable-verify Enable vtable verification feature ], | |
| 78 [case "$enableval" in | |
| 79 yes) enable_vtable_verify=yes ;; | |
| 80 no) enable_vtable_verify=no ;; | |
| 81 *) enable_vtable_verify=no;; | |
| 82 esac], | |
| 83 [enable_vtable_verify=no]) | |
| 84 AC_SUBST(enable_vtable_verify) | |
| 85 | |
| 86 AC_ARG_WITH(aix-soname, | |
| 87 [AS_HELP_STRING([--with-aix-soname=aix|svr4|both], | |
| 88 [shared library versioning (aka "SONAME") variant to provide on AIX])], | |
| 89 [case "${host}:${enable_shared}" in | |
| 90 power*-*-aix[[5-9]]*:yes) | |
| 91 AC_MSG_CHECKING([which variant of shared library versioning to provide for shared libgcc]) | |
| 92 case ${withval} in | |
| 93 aix|svr4|both) ;; | |
| 94 *) AC_MSG_ERROR([Unknown argument to --with-aix-soname]);; | |
| 95 esac | |
| 96 AC_MSG_RESULT($withval) | |
| 97 ;; | |
| 98 *) with_aix_soname=aix ;; | |
| 99 esac | |
| 100 ], [with_aix_soname=aix]) | |
| 101 AC_SUBST(with_aix_soname) | |
| 102 | |
| 103 GCC_PICFLAG | |
| 104 AC_SUBST(PICFLAG) | |
| 105 | |
| 0 | 106 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) |
| 107 AC_ARG_ENABLE(version-specific-runtime-libs, | |
| 108 [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ], | |
| 109 [case "$enableval" in | |
| 110 yes) version_specific_libs=yes ;; | |
| 111 no) version_specific_libs=no ;; | |
| 112 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);; | |
| 113 esac], | |
| 114 [version_specific_libs=no]) | |
| 115 AC_MSG_RESULT($version_specific_libs) | |
| 116 | |
| 117 AC_ARG_WITH(slibdir, | |
| 118 [ --with-slibdir=DIR shared libraries in DIR [LIBDIR]], | |
| 119 slibdir="$with_slibdir", | |
| 120 if test "${version_specific_libs}" = yes; then | |
| 121 slibdir='$(libsubdir)' | |
| 122 elif test -n "$with_cross_host" && test x"$with_cross_host" != x"no"; then | |
| 123 slibdir='$(exec_prefix)/$(host_noncanonical)/lib' | |
| 124 else | |
| 125 slibdir='$(libdir)' | |
| 126 fi) | |
| 127 AC_SUBST(slibdir) | |
| 128 | |
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129 # Command-line options. |
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130 # Very limited version of AC_MAINTAINER_MODE. |
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131 AC_ARG_ENABLE([maintainer-mode], |
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132 [AC_HELP_STRING([--enable-maintainer-mode], |
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133 [enable make rules and dependencies not useful (and |
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134 sometimes confusing) to the casual installer])], |
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135 [case ${enable_maintainer_mode} in |
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136 yes) MAINT='' ;; |
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137 no) MAINT='#' ;; |
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138 *) AC_MSG_ERROR([--enable-maintainer-mode must be yes or no]) ;; |
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139 esac |
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140 maintainer_mode=${enableval}], |
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141 [MAINT='#']) |
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142 AC_SUBST([MAINT])dnl |
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143 |
| 0 | 144 AC_PROG_INSTALL |
| 145 | |
| 146 AC_PROG_AWK | |
| 147 # We need awk; bail out if it's missing. | |
| 148 case ${AWK} in | |
| 149 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;; | |
| 150 esac | |
| 151 | |
| 152 AC_CANONICAL_HOST | |
| 153 ACX_NONCANONICAL_HOST | |
|
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154 ACX_NONCANONICAL_TARGET |
| 0 | 155 GCC_TOPLEV_SUBDIRS |
| 156 | |
|
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157 # Calculate toolexeclibdir |
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158 # Also toolexecdir, though it's only used in toolexeclibdir |
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159 case ${version_specific_libs} in |
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160 yes) |
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161 # Need the gcc compiler version to know where to install libraries |
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162 # and header files if --enable-version-specific-runtime-libs option |
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163 # is selected. |
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164 toolexecdir='$(libdir)/gcc/$(target_noncanonical)' |
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165 toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)' |
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166 ;; |
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167 no) |
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168 if test -n "$with_cross_host" && |
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169 test x"$with_cross_host" != x"no"; then |
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170 # Install a library built with a cross compiler in tooldir, not libdir. |
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171 toolexecdir='$(exec_prefix)/$(target_noncanonical)' |
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172 toolexeclibdir='$(toolexecdir)/lib' |
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173 else |
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174 toolexecdir='$(libdir)/gcc-lib/$(target_noncanonical)' |
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175 toolexeclibdir='$(libdir)' |
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176 fi |
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177 multi_os_directory=`$CC -print-multi-os-directory` |
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178 case $multi_os_directory in |
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179 .) ;; # Avoid trailing /. |
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180 *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;; |
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181 esac |
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182 ;; |
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183 esac |
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184 AC_SUBST(toolexecdir) |
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185 AC_SUBST(toolexeclibdir) |
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186 |
| 0 | 187 dnl These must be called before AM_PROG_LIBTOOL, because it may want |
| 188 dnl to call AC_CHECK_PROG. | |
| 189 AC_CHECK_TOOL(AR, ar) | |
| 190 AC_CHECK_TOOL(LIPO, lipo, :) | |
| 191 AC_CHECK_TOOL(NM, nm) | |
| 192 AC_CHECK_TOOL(RANLIB, ranlib, :) | |
| 193 AC_CHECK_TOOL(STRIP, strip, :) | |
| 194 AC_PROG_LN_S | |
| 195 | |
| 196 GCC_NO_EXECUTABLES | |
| 197 AC_PROG_CC | |
| 198 AC_PROG_CPP_WERROR | |
| 199 | |
| 111 | 200 AC_SYS_LARGEFILE |
| 201 | |
| 202 AC_CHECK_SIZEOF([double]) | |
| 203 AC_CHECK_SIZEOF([long double]) | |
| 204 AS_VAR_ARITH([double_type_size], [$ac_cv_sizeof_double \* 8]) | |
| 205 AS_VAR_ARITH([long_double_type_size], [$ac_cv_sizeof_long_double \* 8]) | |
| 206 AC_SUBST(double_type_size) | |
| 207 AC_SUBST(long_double_type_size) | |
| 208 | |
| 209 AC_CHECK_HEADERS(inttypes.h stdint.h stdlib.h ftw.h \ | |
| 210 unistd.h sys/stat.h sys/types.h \ | |
| 211 string.h strings.h memory.h) | |
| 212 AC_HEADER_STDC | |
| 213 | |
| 0 | 214 # Check for decimal float support. |
| 215 AC_CACHE_CHECK([whether decimal floating point is supported], [libgcc_cv_dfp], | |
| 111 | 216 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ |
| 217 #include <fenv.h> | |
| 218 ]], [[ | |
| 219 _Decimal32 x; | |
| 220 int fe_except = | |
| 221 FE_INVALID|FE_DIVBYZERO|FE_OVERFLOW|FE_UNDERFLOW|FE_INEXACT; | |
| 222 ]])], | |
| 223 [libgcc_cv_dfp=yes], | |
| 0 | 224 [libgcc_cv_dfp=no])]) |
| 225 decimal_float=$libgcc_cv_dfp | |
| 226 AC_SUBST(decimal_float) | |
| 227 | |
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228 GCC_AC_ENABLE_DECIMAL_FLOAT([$host]) |
| 0 | 229 |
| 230 # Check for fixed-point support. | |
| 231 AC_CACHE_CHECK([whether fixed-point is supported], [libgcc_cv_fixed_point], | |
| 232 [AC_COMPILE_IFELSE([_Sat _Fract x;], [libgcc_cv_fixed_point=yes], | |
| 233 [libgcc_cv_fixed_point=no])]) | |
| 234 fixed_point=$libgcc_cv_fixed_point | |
| 235 AC_SUBST(fixed_point) | |
| 236 | |
| 111 | 237 # For platforms with the unwind ABI which includes an unwind library, |
| 238 # libunwind, we can choose to use the system libunwind. | |
| 239 # config.gcc also contains tests of with_system_libunwind. | |
| 240 GCC_CHECK_UNWIND_GETIPINFO | |
| 241 | |
| 242 # Check if the compiler is configured for setjmp/longjmp exceptions. | |
| 243 GCC_CHECK_SJLJ_EXCEPTIONS | |
| 244 | |
| 131 | 245 GCC_CET_FLAGS(CET_FLAGS) |
| 246 AC_SUBST(CET_FLAGS) | |
| 247 | |
| 111 | 248 AC_ARG_ENABLE([explicit-exception-frame-registration], |
| 249 [AC_HELP_STRING([--enable-explicit-exception-frame-registration], | |
| 250 [register exception tables explicitly at module start, for use | |
| 251 e.g. for compatibility with installations without PT_GNU_EH_FRAME support])], | |
| 252 [ | |
| 253 force_explicit_eh_registry= | |
| 254 if test "$enable_explicit_exception_frame_registration" = yes; then | |
| 255 if test $ac_cv_sjlj_exceptions = yes; then | |
| 256 AC_MSG_ERROR([Can't --enable-explicit-exception-frame-registration | |
| 257 with setjmp/longjmp exceptions]) | |
| 258 fi | |
| 259 force_explicit_eh_registry=-DUSE_EH_FRAME_REGISTRY_ALWAYS | |
| 260 fi | |
| 261 ]) | |
| 262 AC_SUBST([force_explicit_eh_registry]) | |
| 263 | |
| 264 AC_LIB_PROG_LD_GNU | |
| 265 | |
| 266 AC_MSG_CHECKING([for thread model used by GCC]) | |
| 267 target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'` | |
| 268 AC_MSG_RESULT([$target_thread_file]) | |
| 269 | |
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270 # Check for assembler CFI support. |
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271 AC_CACHE_CHECK([whether assembler supports CFI directives], [libgcc_cv_cfi], |
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272 [AC_COMPILE_IFELSE( |
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273 [asm("\n\ |
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274 .text\n\ |
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275 .cfi_startproc\n\ |
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276 .cfi_personality 0, symbol\n\ |
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277 .cfi_endproc");], |
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278 [libgcc_cv_cfi=yes], |
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279 [libgcc_cv_cfi=no])]) |
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280 |
| 111 | 281 # Check 32bit or 64bit. In the case of MIPS, this really determines the |
| 282 # word size rather than the address size. | |
| 283 cat > conftest.c <<EOF | |
| 284 #if defined(__x86_64__) || (!defined(__i386__) && defined(__LP64__)) \ | |
| 285 || defined(__mips64) | |
| 0 | 286 host_address=64 |
| 287 #else | |
| 288 host_address=32 | |
| 289 #endif | |
| 290 EOF | |
| 111 | 291 eval `${CC-cc} -E conftest.c | grep host_address=` |
| 292 rm -f conftest.c | |
| 293 | |
| 294 case ${host} in | |
| 295 mips*-*-*) | |
| 296 AC_CACHE_CHECK([whether the target is hard-float], | |
| 297 [libgcc_cv_mips_hard_float], | |
| 298 [AC_COMPILE_IFELSE( | |
| 299 [#ifndef __mips_hard_float | |
| 300 #error FOO | |
| 301 #endif], | |
| 302 [libgcc_cv_mips_hard_float=yes], | |
| 303 [libgcc_cv_mips_hard_float=no])]) | |
| 304 esac | |
| 305 | |
| 306 case ${host} in | |
| 307 *-*-solaris2*) | |
| 131 | 308 # Check for system-provided CRTs on Solaris 11.4. |
| 111 | 309 AC_CACHE_CHECK([system-provided CRTs on Solaris], |
| 310 [libgcc_cv_solaris_crts], | |
| 311 [libgcc_cv_solaris_crts=no | |
| 312 libgcc_sysroot="`${CC} -print-sysroot`" | |
| 313 libgcc_libdir="$libgcc_sysroot/usr/lib" | |
| 314 # At the time they were added, gcrt1.o became a symlink for backwards | |
| 315 # compatibility on x86, while crt1.o was added on sparc, so check for that. | |
| 316 case ${host} in | |
| 317 i?86-*-solaris2* | x86_64-*-solaris2*) | |
| 318 if test -h "$libgcc_libdir/gcrt1.o"; then libgcc_cv_solaris_crts=yes; fi | |
| 319 ;; | |
| 320 sparc*-*-solaris2*) | |
| 321 if test -f "$libgcc_libdir/crt1.o"; then libgcc_cv_solaris_crts=yes; fi | |
| 322 ;; | |
| 323 esac]) | |
| 324 if test $libgcc_cv_solaris_crts = yes; then | |
| 325 AC_DEFINE(HAVE_SOLARIS_CRTS, 1, | |
| 326 [Define if the system-provided CRTs are present on Solaris.]) | |
| 327 fi | |
| 328 ;; | |
| 329 esac | |
| 330 | |
| 331 # Determine the version of glibc, if any, used on the target. | |
| 332 AC_MSG_CHECKING([for target glibc version]) | |
| 333 AC_ARG_WITH([glibc-version], | |
| 334 [AS_HELP_STRING([--with-glibc-version=M.N], | |
| 335 [assume GCC used with glibc version M.N or later])], [ | |
| 336 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then | |
| 337 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'` | |
| 338 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'` | |
| 339 else | |
| 340 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N]) | |
| 341 fi], [ | |
| 342 AC_COMPUTE_INT([glibc_version_major], [__GLIBC__], | |
| 343 [#include <features.h>], | |
| 344 [glibc_version_major=0]) | |
| 345 AC_COMPUTE_INT([glibc_version_minor], [__GLIBC_MINOR__], | |
| 346 [#include <features.h>], | |
| 347 [glibc_version_minor=0])]) | |
| 348 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor]) | |
| 349 | |
| 350 # Determine floating-point type for powerpc*-*-linux*. | |
| 351 # Single-precision-only FPRs are not a supported configuration for | |
| 352 # this target, so are not allowed for in this test. | |
| 353 case ${host} in | |
| 354 powerpc*-*-linux*) | |
| 355 cat > conftest.c <<EOF | |
| 356 #ifdef __powerpc64__ | |
| 357 ppc_fp_type=64 | |
| 358 #elif defined _SOFT_FLOAT | |
| 359 ppc_fp_type=soft | |
| 360 #elif defined _SOFT_DOUBLE | |
| 361 ppc_fp_type=e500v1 | |
| 362 #elif defined __NO_FPRS__ | |
| 363 ppc_fp_type=e500v2 | |
| 364 #else | |
| 365 ppc_fp_type=hard | |
| 366 #endif | |
| 367 EOF | |
| 368 eval `${CC-cc} -E conftest.c | grep ppc_fp_type=` | |
| 369 rm -f conftest.c | |
| 370 # glibc 2.19 and later provide all the soft-fp functions, with proper | |
| 371 # interactions with <fenv.h> exception and rounding mode handling, so | |
| 372 # make libgcc's versions into compat symbols if a recent enough glibc | |
| 373 # version is being used. | |
| 374 ppc_fp_compat= | |
| 375 case ${ppc_fp_type} in | |
| 376 soft|e500v1|e500v2) | |
| 377 if test $glibc_version_major -gt 2 \ | |
| 378 || ( test $glibc_version_major -eq 2 \ | |
| 379 && test $glibc_version_minor -ge 19 ); then | |
| 380 ppc_fp_compat="t-softfp-compat" | |
| 381 fi | |
| 382 ;; | |
| 383 esac | |
| 384 ;; | |
| 385 esac | |
| 386 | |
| 387 case ${host} in | |
| 388 # At present, we cannot turn -mfloat128 on via #pragma GCC target, so just | |
| 389 # check if we have VSX (ISA 2.06) support to build the software libraries, and | |
| 390 # whether the assembler can handle xsaddqp for hardware support. Also check if | |
| 391 # a new glibc is being used so that __builtin_cpu_supports can be used. | |
| 392 powerpc*-*-linux*) | |
| 393 saved_CFLAGS="$CFLAGS" | |
| 394 CFLAGS="$CFLAGS -mabi=altivec -mvsx -mfloat128" | |
| 395 AC_CACHE_CHECK([for PowerPC ISA 2.06 to build __float128 libraries], | |
| 396 [libgcc_cv_powerpc_float128], | |
| 397 [AC_COMPILE_IFELSE( | |
| 398 [vector double dadd (vector double a, vector double b) { return a + b; }], | |
| 399 [libgcc_cv_powerpc_float128=yes], | |
| 400 [libgcc_cv_powerpc_float128=no])]) | |
| 401 | |
| 402 CFLAGS="$CFLAGS -mpower9-vector -mfloat128-hardware" | |
| 403 AC_CACHE_CHECK([for PowerPC ISA 3.0 to build hardware __float128 libraries], | |
| 404 [libgcc_cv_powerpc_float128_hw], | |
| 405 [AC_COMPILE_IFELSE( | |
| 406 [#include <sys/auxv.h> | |
| 407 #ifndef AT_PLATFORM | |
| 408 #error "AT_PLATFORM is not defined" | |
| 409 #endif | |
| 410 #ifndef __BUILTIN_CPU_SUPPORTS__ | |
| 411 #error "__builtin_cpu_supports is not available" | |
| 412 #endif | |
| 413 vector unsigned char add (vector unsigned char a, vector unsigned char b) | |
| 414 { | |
| 415 vector unsigned char ret; | |
| 416 __asm__ ("xsaddqp %0,%1,%2" : "=v" (ret) : "v" (a), "v" (b)); | |
| 417 return ret; | |
| 418 } | |
| 419 void *add_resolver (void) { return (void *) add; } | |
| 420 __float128 add_ifunc (__float128, __float128) | |
| 421 __attribute__ ((__ifunc__ ("add_resolver")));], | |
| 422 [libgcc_cv_powerpc_float128_hw=yes], | |
| 423 [libgcc_cv_powerpc_float128_hw=no])]) | |
| 424 CFLAGS="$saved_CFLAGS" | |
| 0 | 425 esac |
| 426 | |
| 427 # Collect host-machine-specific information. | |
| 428 . ${srcdir}/config.host | |
| 429 | |
| 111 | 430 # Used for constructing correct paths for offload compilers. |
| 431 accel_dir_suffix= | |
| 432 real_host_noncanonical=${host_noncanonical} | |
| 433 if test x"$enable_as_accelerator_for" != x; then | |
| 434 accel_dir_suffix=/accel/${target_noncanonical} | |
| 435 real_host_noncanonical=${enable_as_accelerator_for} | |
| 436 fi | |
| 437 AC_SUBST(accel_dir_suffix) | |
| 438 AC_SUBST(real_host_noncanonical) | |
| 439 | |
| 440 if test x"$enable_offload_targets" != x; then | |
| 441 extra_parts="${extra_parts} crtoffloadbegin.o crtoffloadend.o crtoffloadtable.o" | |
| 442 fi | |
| 443 | |
| 0 | 444 # Check if Solaris/x86 linker supports ZERO terminator unwind entries. |
| 445 # This is after config.host so we can augment tmake_file. | |
| 446 # Link with -nostartfiles -nodefaultlibs since neither are present while | |
| 447 # building libgcc. | |
| 448 case ${host} in | |
| 111 | 449 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*) |
| 0 | 450 cat > conftest.s <<EOF |
| 451 .section .eh_frame,"a",@unwind | |
| 452 .zero 4 | |
| 453 .section .jcr,"aw",@progbits | |
| 454 .zero 8 | |
| 455 EOF | |
| 456 if AC_TRY_COMMAND(${CC-cc} -shared -nostartfiles -nodefaultlibs -o conftest.so conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
| 111 | 457 tmake_file="${tmake_file} i386/t-crtstuff" |
| 458 fi | |
| 459 ;; | |
| 460 esac | |
| 461 | |
| 131 | 462 # Check if Solaris linker support v2 linker mapfile syntax. |
| 463 # Link with -nostartfiles -nodefaultlibs since neither are present while | |
| 464 # building libgcc. | |
| 465 case ${host} in | |
| 466 *-*-solaris2*) | |
| 467 solaris_ld_v2_maps=no | |
| 468 echo 'int main(void) {return 0;}' > conftest.c | |
| 469 echo '$mapfile_version 2' > conftest.map | |
| 470 if AC_TRY_COMMAND([${CC-cc} -nostartfiles -nodefaultlibs -Wl,-M,conftest.map -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD]); then | |
| 471 solaris_ld_v2_maps=yes | |
| 472 fi | |
| 473 ;; | |
| 474 esac | |
| 475 AC_SUBST(solaris_ld_v2_maps) | |
| 476 | |
| 111 | 477 # Check if xtensa target is configured for windowed ABI and thus needs to use |
| 478 # custom unwind code. | |
| 479 # This is after config.host so we can augment tmake_file. | |
| 480 case ${host} in | |
| 481 xtensa*-*) | |
| 482 cat > conftest.c <<EOF | |
| 483 #ifdef __XTENSA_CALL0_ABI__ | |
| 484 #error | |
| 485 #endif | |
| 486 EOF | |
| 487 if AC_TRY_COMMAND(${CC-cc} -E -o conftest.i conftest.c 1>&AS_MESSAGE_LOG_FD); then | |
| 488 tmake_file="${tmake_file} xtensa/t-windowed" | |
| 0 | 489 fi |
| 490 ;; | |
| 491 esac | |
| 492 | |
| 493 # Check for visibility support. This is after config.host so that | |
| 494 # we can check for asm_hidden_op. | |
| 495 AC_CACHE_CHECK([for __attribute__((visibility("hidden")))], | |
| 496 libgcc_cv_hidden_visibility_attribute, [ | |
| 497 echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1; }' > conftest.c | |
| 498 libgcc_cv_hidden_visibility_attribute=no | |
| 499 if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
| 500 if grep "\\$asm_hidden_op.*foo" conftest.s >/dev/null; then | |
| 501 libgcc_cv_hidden_visibility_attribute=yes | |
| 502 fi | |
| 503 fi | |
| 504 rm -f conftest.* | |
| 505 ]) | |
| 506 | |
| 507 if test $libgcc_cv_hidden_visibility_attribute = yes; then | |
| 508 vis_hide='-fvisibility=hidden -DHIDE_EXPORTS' | |
| 131 | 509 AC_DEFINE_UNQUOTED(AS_HIDDEN_DIRECTIVE, $asm_hidden_op, [Define to the .hidden-like directive if it exists.]) |
| 0 | 510 else |
| 511 vis_hide= | |
| 512 fi | |
| 513 AC_SUBST(vis_hide) | |
| 514 | |
| 131 | 515 # Check for .cfi_sections .debug_frame support. |
| 516 AC_CACHE_CHECK([for .cfi_sections .debug_frame], | |
| 517 libgcc_cv_cfi_sections_directive, [ | |
| 518 echo 'int foo (int, char *);' > conftest.c | |
| 519 echo 'int bar (int x) { char *y = __builtin_alloca (x); return foo (x + 1, y) + 1; }' >> conftest.c | |
| 520 libgcc_cv_cfi_sections_directive=no | |
| 521 if AC_TRY_COMMAND(${CC-cc} -Werror -g -fno-asynchronous-unwind-tables -fno-unwind-tables -fno-exceptions -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
| 522 if grep "\\.cfi_sections.*\\.debug_frame" conftest.s >/dev/null; then | |
| 523 libgcc_cv_cfi_sections_directive=yes | |
| 524 fi | |
| 525 fi | |
| 526 rm -f conftest.* | |
| 527 ]) | |
| 528 if test $libgcc_cv_cfi_sections_directive = yes; then | |
| 529 AC_DEFINE(HAVE_AS_CFI_SECTIONS, 1, [Define to 1 if the assembler supports .cfi_sections .debug_frame directive.]) | |
| 530 fi | |
| 531 | |
| 0 | 532 # See if we have thread-local storage. We can only test assembler |
| 111 | 533 # since link-time and run-time tests require the newly built |
| 0 | 534 # gcc, which can't be used to build executable due to that libgcc |
| 535 # is yet to be built here. | |
| 536 GCC_CHECK_CC_TLS | |
| 537 set_have_cc_tls= | |
| 538 if test "$enable_tls $gcc_cv_have_cc_tls" = "yes yes"; then | |
| 539 set_have_cc_tls="-DHAVE_CC_TLS" | |
| 540 fi | |
| 541 AC_SUBST(set_have_cc_tls) | |
| 542 | |
|
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543 # See if we have emulated thread-local storage. |
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544 GCC_CHECK_EMUTLS |
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545 set_use_emutls= |
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546 if test "$enable_tls $gcc_cv_use_emutls" = "yes yes"; then |
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547 set_use_emutls="-DUSE_EMUTLS" |
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548 fi |
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549 AC_SUBST(set_use_emutls) |
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550 |
| 111 | 551 dnl Check if as supports AVX instructions. |
| 552 AC_DEFUN([LIBGCC_CHECK_AS_AVX], [ | |
| 553 case "${target}" in | |
| 554 i[[34567]]86-*-* | x86_64-*-*) | |
| 555 AC_CACHE_CHECK([if the assembler supports AVX], libgcc_cv_as_avx, [ | |
| 556 AC_TRY_COMPILE([], [asm("vzeroupper");], | |
| 557 [libgcc_cv_as_avx=yes], [libgcc_cv_as_avx=no]) | |
| 558 ]) | |
| 559 if test x$libgcc_cv_as_avx = xyes; then | |
| 560 AC_DEFINE(HAVE_AS_AVX, 1, [Define to 1 if the assembler supports AVX.]) | |
| 561 fi | |
| 562 ;; | |
| 563 esac]) | |
| 564 LIBGCC_CHECK_AS_AVX | |
| 565 | |
| 566 dnl Check if as supports RTM instructions. | |
| 567 AC_CACHE_CHECK(for init priority support, libgcc_cv_init_priority, [ | |
| 568 AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, | |
| 569 [[void ip (void) __attribute__ ((constructor (1)));]])], | |
| 570 [libgcc_cv_init_priority=yes],[libgcc_cv_init_priority=no])]) | |
| 571 if test $libgcc_cv_init_priority = yes; then | |
| 572 AC_DEFINE(HAVE_INIT_PRIORITY, 1, | |
| 573 [Define if the compiler supports init priority.]) | |
| 574 fi | |
| 575 | |
| 576 # Conditionalize the sfp-machine.h header for this target machine. | |
| 577 if test -z "${sfp_machine_header}"; then | |
| 578 sfp_machine_header=$cpu_type/sfp-machine.h | |
| 579 if test -f ${srcdir}/config/${sfp_machine_header}; then | |
| 580 : | |
| 581 else | |
| 582 sfp_machine_header=no-sfp-machine.h | |
| 583 fi | |
| 584 fi | |
| 585 AC_SUBST(sfp_machine_header) | |
| 586 | |
| 0 | 587 # Conditionalize the makefile for this target machine. |
| 588 tmake_file_= | |
| 589 for f in ${tmake_file} | |
| 590 do | |
| 591 if test -f ${srcdir}/config/$f | |
| 592 then | |
| 593 tmake_file_="${tmake_file_} \$(srcdir)/config/$f" | |
| 594 fi | |
| 595 done | |
| 596 tmake_file="${tmake_file_}" | |
| 597 AC_SUBST(tmake_file) | |
| 598 | |
| 111 | 599 # Likewise export definitions for libgcc_tm.h |
| 600 tm_file_= | |
| 601 for f in ${tm_file} | |
| 602 do | |
| 603 tm_file_="${tm_file_} \$(srcdir)/config/$f" | |
| 604 done | |
| 605 tm_file="${tm_file_}" | |
| 606 AC_SUBST(tm_file) | |
| 607 AC_SUBST(tm_defines) | |
| 608 | |
| 609 # Map from thread model to thread header. | |
| 610 GCC_AC_THREAD_HEADER([$target_thread_file]) | |
| 611 | |
| 612 # Determine what GCC version number to use in filesystem paths. | |
| 613 GCC_BASE_VER | |
| 614 | |
| 0 | 615 # Substitute configuration variables |
| 111 | 616 AC_SUBST(cpu_type) |
| 0 | 617 AC_SUBST(extra_parts) |
| 618 AC_SUBST(asm_hidden_op) | |
| 111 | 619 AC_SUBST(enable_execute_stack) |
| 620 AC_SUBST(unwind_header) | |
| 621 AC_SUBST(md_unwind_header) | |
| 622 AC_SUBST(sfp_machine_header) | |
| 623 AC_SUBST(thread_header) | |
| 0 | 624 |
| 625 # We need multilib support. | |
| 626 AC_CONFIG_FILES([Makefile]) | |
| 627 AC_CONFIG_COMMANDS([default], | |
| 628 [[test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h | |
| 629 if test -n "$CONFIG_FILES"; then | |
| 630 # FIXME: We shouldn't need to set ac_file | |
| 631 ac_file=Makefile | |
| 632 . ${libgcc_topdir}/config-ml.in | |
| 633 fi]], | |
| 634 [[srcdir=${srcdir} | |
| 635 host=${host} | |
| 636 with_target_subdir=${with_target_subdir} | |
| 637 with_multisubdir=${with_multisubdir} | |
| 638 ac_configure_args="--enable-multilib ${ac_configure_args}" | |
| 639 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh} | |
| 640 libgcc_topdir=${libgcc_topdir} | |
| 641 CC="${CC}" | |
| 642 ]]) | |
| 643 AC_OUTPUT |