Mercurial > hg > CbC > CbC_gcc
annotate libgcc/configure.ac @ 118:fd00160c1b76
ifdef TARGET_64BIT
| author | mir3636 |
|---|---|
| date | Tue, 27 Feb 2018 15:01:35 +0900 |
| parents | 04ced10e8804 |
| children | 84e7813d76e9 |
| 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) | |
| 0 | 14 |
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15 AC_PREREQ(2.64) |
| 0 | 16 AC_INIT([GNU C Runtime Library], 1.0,,[libgcc]) |
| 17 AC_CONFIG_SRCDIR([static-object.mk]) | |
| 18 | |
| 111 | 19 # The libgcc should not depend on any header files |
| 20 AC_DEFUN([_AC_INCLUDES_DEFAULT_REQUIREMENTS], | |
| 21 [m4_divert_text([DEFAULTS], | |
| 22 [ac_includes_default='/* none */'])]) | |
| 23 | |
| 0 | 24 AC_ARG_WITH(target-subdir, |
| 25 [ --with-target-subdir=SUBDIR Configuring in a subdirectory for target]) | |
| 26 AC_ARG_WITH(cross-host, | |
| 27 [ --with-cross-host=HOST Configuring with a cross compiler]) | |
| 28 AC_ARG_WITH(ld, | |
| 29 [ --with-ld arrange to use the specified ld (full pathname)]) | |
| 30 | |
| 31 if test "${srcdir}" = "."; then | |
| 32 if test -n "${with_build_subdir}"; then | |
| 33 libgcc_topdir="${srcdir}/../.." | |
| 34 with_target_subdir= | |
| 35 elif test -z "${with_target_subdir}"; then | |
| 36 libgcc_topdir="${srcdir}/.." | |
| 37 else | |
| 38 if test "${with_target_subdir}" != "."; then | |
| 39 libgcc_topdir="${srcdir}/${with_multisrctop}../.." | |
| 40 else | |
| 41 libgcc_topdir="${srcdir}/${with_multisrctop}.." | |
| 42 fi | |
| 43 fi | |
| 44 else | |
| 45 libgcc_topdir="${srcdir}/.." | |
| 46 fi | |
| 47 AC_SUBST(libgcc_topdir) | |
| 48 AC_CONFIG_AUX_DIR($libgcc_topdir) | |
| 111 | 49 AC_CONFIG_HEADER(auto-target.h:config.in) |
| 0 | 50 |
| 51 AC_ARG_ENABLE(shared, | |
| 52 [ --disable-shared don't provide a shared libgcc], | |
| 53 [ | |
| 54 case $enable_shared in | |
| 55 yes | no) ;; | |
| 56 *) | |
| 57 enable_shared=no | |
| 58 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:," | |
| 59 for pkg in $enableval; do | |
| 60 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then | |
| 61 enable_shared=yes | |
| 62 fi | |
| 63 done | |
| 64 IFS="$ac_save_ifs" | |
| 65 ;; | |
| 66 esac | |
| 67 ], [enable_shared=yes]) | |
| 68 AC_SUBST(enable_shared) | |
| 69 | |
| 111 | 70 AC_ARG_ENABLE(vtable-verify, |
| 71 [ --enable-vtable-verify Enable vtable verification feature ], | |
| 72 [case "$enableval" in | |
| 73 yes) enable_vtable_verify=yes ;; | |
| 74 no) enable_vtable_verify=no ;; | |
| 75 *) enable_vtable_verify=no;; | |
| 76 esac], | |
| 77 [enable_vtable_verify=no]) | |
| 78 AC_SUBST(enable_vtable_verify) | |
| 79 | |
| 80 AC_ARG_WITH(aix-soname, | |
| 81 [AS_HELP_STRING([--with-aix-soname=aix|svr4|both], | |
| 82 [shared library versioning (aka "SONAME") variant to provide on AIX])], | |
| 83 [case "${host}:${enable_shared}" in | |
| 84 power*-*-aix[[5-9]]*:yes) | |
| 85 AC_MSG_CHECKING([which variant of shared library versioning to provide for shared libgcc]) | |
| 86 case ${withval} in | |
| 87 aix|svr4|both) ;; | |
| 88 *) AC_MSG_ERROR([Unknown argument to --with-aix-soname]);; | |
| 89 esac | |
| 90 AC_MSG_RESULT($withval) | |
| 91 ;; | |
| 92 *) with_aix_soname=aix ;; | |
| 93 esac | |
| 94 ], [with_aix_soname=aix]) | |
| 95 AC_SUBST(with_aix_soname) | |
| 96 | |
| 97 GCC_PICFLAG | |
| 98 AC_SUBST(PICFLAG) | |
| 99 | |
| 0 | 100 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) |
| 101 AC_ARG_ENABLE(version-specific-runtime-libs, | |
| 102 [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ], | |
| 103 [case "$enableval" in | |
| 104 yes) version_specific_libs=yes ;; | |
| 105 no) version_specific_libs=no ;; | |
| 106 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);; | |
| 107 esac], | |
| 108 [version_specific_libs=no]) | |
| 109 AC_MSG_RESULT($version_specific_libs) | |
| 110 | |
| 111 AC_ARG_WITH(slibdir, | |
| 112 [ --with-slibdir=DIR shared libraries in DIR [LIBDIR]], | |
| 113 slibdir="$with_slibdir", | |
| 114 if test "${version_specific_libs}" = yes; then | |
| 115 slibdir='$(libsubdir)' | |
| 116 elif test -n "$with_cross_host" && test x"$with_cross_host" != x"no"; then | |
| 117 slibdir='$(exec_prefix)/$(host_noncanonical)/lib' | |
| 118 else | |
| 119 slibdir='$(libdir)' | |
| 120 fi) | |
| 121 AC_SUBST(slibdir) | |
| 122 | |
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123 # Command-line options. |
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124 # Very limited version of AC_MAINTAINER_MODE. |
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125 AC_ARG_ENABLE([maintainer-mode], |
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126 [AC_HELP_STRING([--enable-maintainer-mode], |
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127 [enable make rules and dependencies not useful (and |
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128 sometimes confusing) to the casual installer])], |
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129 [case ${enable_maintainer_mode} in |
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130 yes) MAINT='' ;; |
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131 no) MAINT='#' ;; |
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132 *) AC_MSG_ERROR([--enable-maintainer-mode must be yes or no]) ;; |
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133 esac |
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134 maintainer_mode=${enableval}], |
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135 [MAINT='#']) |
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136 AC_SUBST([MAINT])dnl |
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137 |
| 0 | 138 AC_PROG_INSTALL |
| 139 | |
| 140 AC_PROG_AWK | |
| 141 # We need awk; bail out if it's missing. | |
| 142 case ${AWK} in | |
| 143 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;; | |
| 144 esac | |
| 145 | |
| 146 AC_CANONICAL_HOST | |
| 147 ACX_NONCANONICAL_HOST | |
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148 ACX_NONCANONICAL_TARGET |
| 0 | 149 GCC_TOPLEV_SUBDIRS |
| 150 | |
|
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151 # Calculate toolexeclibdir |
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152 # Also toolexecdir, though it's only used in toolexeclibdir |
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153 case ${version_specific_libs} in |
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154 yes) |
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155 # Need the gcc compiler version to know where to install libraries |
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156 # and header files if --enable-version-specific-runtime-libs option |
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157 # is selected. |
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158 toolexecdir='$(libdir)/gcc/$(target_noncanonical)' |
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159 toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)' |
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160 ;; |
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161 no) |
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162 if test -n "$with_cross_host" && |
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163 test x"$with_cross_host" != x"no"; then |
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164 # Install a library built with a cross compiler in tooldir, not libdir. |
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165 toolexecdir='$(exec_prefix)/$(target_noncanonical)' |
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166 toolexeclibdir='$(toolexecdir)/lib' |
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167 else |
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168 toolexecdir='$(libdir)/gcc-lib/$(target_noncanonical)' |
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169 toolexeclibdir='$(libdir)' |
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170 fi |
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171 multi_os_directory=`$CC -print-multi-os-directory` |
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172 case $multi_os_directory in |
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173 .) ;; # Avoid trailing /. |
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174 *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;; |
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175 esac |
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176 ;; |
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177 esac |
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178 AC_SUBST(toolexecdir) |
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179 AC_SUBST(toolexeclibdir) |
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180 |
| 0 | 181 dnl These must be called before AM_PROG_LIBTOOL, because it may want |
| 182 dnl to call AC_CHECK_PROG. | |
| 183 AC_CHECK_TOOL(AR, ar) | |
| 184 AC_CHECK_TOOL(LIPO, lipo, :) | |
| 185 AC_CHECK_TOOL(NM, nm) | |
| 186 AC_CHECK_TOOL(RANLIB, ranlib, :) | |
| 187 AC_CHECK_TOOL(STRIP, strip, :) | |
| 188 AC_PROG_LN_S | |
| 189 | |
| 190 GCC_NO_EXECUTABLES | |
| 191 AC_PROG_CC | |
| 192 AC_PROG_CPP_WERROR | |
| 193 | |
| 111 | 194 AC_SYS_LARGEFILE |
| 195 | |
| 196 AC_CHECK_SIZEOF([double]) | |
| 197 AC_CHECK_SIZEOF([long double]) | |
| 198 AS_VAR_ARITH([double_type_size], [$ac_cv_sizeof_double \* 8]) | |
| 199 AS_VAR_ARITH([long_double_type_size], [$ac_cv_sizeof_long_double \* 8]) | |
| 200 AC_SUBST(double_type_size) | |
| 201 AC_SUBST(long_double_type_size) | |
| 202 | |
| 203 AC_CHECK_HEADERS(inttypes.h stdint.h stdlib.h ftw.h \ | |
| 204 unistd.h sys/stat.h sys/types.h \ | |
| 205 string.h strings.h memory.h) | |
| 206 AC_HEADER_STDC | |
| 207 | |
| 0 | 208 # Check for decimal float support. |
| 209 AC_CACHE_CHECK([whether decimal floating point is supported], [libgcc_cv_dfp], | |
| 111 | 210 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ |
| 211 #include <fenv.h> | |
| 212 ]], [[ | |
| 213 _Decimal32 x; | |
| 214 int fe_except = | |
| 215 FE_INVALID|FE_DIVBYZERO|FE_OVERFLOW|FE_UNDERFLOW|FE_INEXACT; | |
| 216 ]])], | |
| 217 [libgcc_cv_dfp=yes], | |
| 0 | 218 [libgcc_cv_dfp=no])]) |
| 219 decimal_float=$libgcc_cv_dfp | |
| 220 AC_SUBST(decimal_float) | |
| 221 | |
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222 GCC_AC_ENABLE_DECIMAL_FLOAT([$host]) |
| 0 | 223 |
| 224 # Check for fixed-point support. | |
| 225 AC_CACHE_CHECK([whether fixed-point is supported], [libgcc_cv_fixed_point], | |
| 226 [AC_COMPILE_IFELSE([_Sat _Fract x;], [libgcc_cv_fixed_point=yes], | |
| 227 [libgcc_cv_fixed_point=no])]) | |
| 228 fixed_point=$libgcc_cv_fixed_point | |
| 229 AC_SUBST(fixed_point) | |
| 230 | |
| 111 | 231 # For platforms with the unwind ABI which includes an unwind library, |
| 232 # libunwind, we can choose to use the system libunwind. | |
| 233 # config.gcc also contains tests of with_system_libunwind. | |
| 234 GCC_CHECK_UNWIND_GETIPINFO | |
| 235 | |
| 236 # Check if the compiler is configured for setjmp/longjmp exceptions. | |
| 237 GCC_CHECK_SJLJ_EXCEPTIONS | |
| 238 | |
| 239 AC_ARG_ENABLE([explicit-exception-frame-registration], | |
| 240 [AC_HELP_STRING([--enable-explicit-exception-frame-registration], | |
| 241 [register exception tables explicitly at module start, for use | |
| 242 e.g. for compatibility with installations without PT_GNU_EH_FRAME support])], | |
| 243 [ | |
| 244 force_explicit_eh_registry= | |
| 245 if test "$enable_explicit_exception_frame_registration" = yes; then | |
| 246 if test $ac_cv_sjlj_exceptions = yes; then | |
| 247 AC_MSG_ERROR([Can't --enable-explicit-exception-frame-registration | |
| 248 with setjmp/longjmp exceptions]) | |
| 249 fi | |
| 250 force_explicit_eh_registry=-DUSE_EH_FRAME_REGISTRY_ALWAYS | |
| 251 fi | |
| 252 ]) | |
| 253 AC_SUBST([force_explicit_eh_registry]) | |
| 254 | |
| 255 AC_LIB_PROG_LD_GNU | |
| 256 | |
| 257 AC_MSG_CHECKING([for thread model used by GCC]) | |
| 258 target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'` | |
| 259 AC_MSG_RESULT([$target_thread_file]) | |
| 260 | |
|
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261 # Check for assembler CFI support. |
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262 AC_CACHE_CHECK([whether assembler supports CFI directives], [libgcc_cv_cfi], |
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263 [AC_COMPILE_IFELSE( |
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264 [asm("\n\ |
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265 .text\n\ |
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266 .cfi_startproc\n\ |
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267 .cfi_personality 0, symbol\n\ |
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268 .cfi_endproc");], |
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269 [libgcc_cv_cfi=yes], |
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270 [libgcc_cv_cfi=no])]) |
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271 |
| 111 | 272 # Check 32bit or 64bit. In the case of MIPS, this really determines the |
| 273 # word size rather than the address size. | |
| 274 cat > conftest.c <<EOF | |
| 275 #if defined(__x86_64__) || (!defined(__i386__) && defined(__LP64__)) \ | |
| 276 || defined(__mips64) | |
| 0 | 277 host_address=64 |
| 278 #else | |
| 279 host_address=32 | |
| 280 #endif | |
| 281 EOF | |
| 111 | 282 eval `${CC-cc} -E conftest.c | grep host_address=` |
| 283 rm -f conftest.c | |
| 284 | |
| 285 case ${host} in | |
| 286 mips*-*-*) | |
| 287 AC_CACHE_CHECK([whether the target is hard-float], | |
| 288 [libgcc_cv_mips_hard_float], | |
| 289 [AC_COMPILE_IFELSE( | |
| 290 [#ifndef __mips_hard_float | |
| 291 #error FOO | |
| 292 #endif], | |
| 293 [libgcc_cv_mips_hard_float=yes], | |
| 294 [libgcc_cv_mips_hard_float=no])]) | |
| 295 esac | |
| 296 | |
| 297 case ${host} in | |
| 298 *-*-solaris2*) | |
| 299 # Check for system-provided CRTs on Solaris 11.x and Solaris 12. | |
| 300 AC_CACHE_CHECK([system-provided CRTs on Solaris], | |
| 301 [libgcc_cv_solaris_crts], | |
| 302 [libgcc_cv_solaris_crts=no | |
| 303 libgcc_sysroot="`${CC} -print-sysroot`" | |
| 304 libgcc_libdir="$libgcc_sysroot/usr/lib" | |
| 305 # At the time they were added, gcrt1.o became a symlink for backwards | |
| 306 # compatibility on x86, while crt1.o was added on sparc, so check for that. | |
| 307 case ${host} in | |
| 308 i?86-*-solaris2* | x86_64-*-solaris2*) | |
| 309 if test -h "$libgcc_libdir/gcrt1.o"; then libgcc_cv_solaris_crts=yes; fi | |
| 310 ;; | |
| 311 sparc*-*-solaris2*) | |
| 312 if test -f "$libgcc_libdir/crt1.o"; then libgcc_cv_solaris_crts=yes; fi | |
| 313 ;; | |
| 314 esac]) | |
| 315 if test $libgcc_cv_solaris_crts = yes; then | |
| 316 AC_DEFINE(HAVE_SOLARIS_CRTS, 1, | |
| 317 [Define if the system-provided CRTs are present on Solaris.]) | |
| 318 fi | |
| 319 ;; | |
| 320 esac | |
| 321 | |
| 322 # Determine the version of glibc, if any, used on the target. | |
| 323 AC_MSG_CHECKING([for target glibc version]) | |
| 324 AC_ARG_WITH([glibc-version], | |
| 325 [AS_HELP_STRING([--with-glibc-version=M.N], | |
| 326 [assume GCC used with glibc version M.N or later])], [ | |
| 327 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then | |
| 328 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'` | |
| 329 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'` | |
| 330 else | |
| 331 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N]) | |
| 332 fi], [ | |
| 333 AC_COMPUTE_INT([glibc_version_major], [__GLIBC__], | |
| 334 [#include <features.h>], | |
| 335 [glibc_version_major=0]) | |
| 336 AC_COMPUTE_INT([glibc_version_minor], [__GLIBC_MINOR__], | |
| 337 [#include <features.h>], | |
| 338 [glibc_version_minor=0])]) | |
| 339 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor]) | |
| 340 | |
| 341 # Determine floating-point type for powerpc*-*-linux*. | |
| 342 # Single-precision-only FPRs are not a supported configuration for | |
| 343 # this target, so are not allowed for in this test. | |
| 344 case ${host} in | |
| 345 powerpc*-*-linux*) | |
| 346 cat > conftest.c <<EOF | |
| 347 #ifdef __powerpc64__ | |
| 348 ppc_fp_type=64 | |
| 349 #elif defined _SOFT_FLOAT | |
| 350 ppc_fp_type=soft | |
| 351 #elif defined _SOFT_DOUBLE | |
| 352 ppc_fp_type=e500v1 | |
| 353 #elif defined __NO_FPRS__ | |
| 354 ppc_fp_type=e500v2 | |
| 355 #else | |
| 356 ppc_fp_type=hard | |
| 357 #endif | |
| 358 EOF | |
| 359 eval `${CC-cc} -E conftest.c | grep ppc_fp_type=` | |
| 360 rm -f conftest.c | |
| 361 # glibc 2.19 and later provide all the soft-fp functions, with proper | |
| 362 # interactions with <fenv.h> exception and rounding mode handling, so | |
| 363 # make libgcc's versions into compat symbols if a recent enough glibc | |
| 364 # version is being used. | |
| 365 ppc_fp_compat= | |
| 366 case ${ppc_fp_type} in | |
| 367 soft|e500v1|e500v2) | |
| 368 if test $glibc_version_major -gt 2 \ | |
| 369 || ( test $glibc_version_major -eq 2 \ | |
| 370 && test $glibc_version_minor -ge 19 ); then | |
| 371 ppc_fp_compat="t-softfp-compat" | |
| 372 fi | |
| 373 ;; | |
| 374 esac | |
| 375 ;; | |
| 376 esac | |
| 377 | |
| 378 case ${host} in | |
| 379 # At present, we cannot turn -mfloat128 on via #pragma GCC target, so just | |
| 380 # check if we have VSX (ISA 2.06) support to build the software libraries, and | |
| 381 # whether the assembler can handle xsaddqp for hardware support. Also check if | |
| 382 # a new glibc is being used so that __builtin_cpu_supports can be used. | |
| 383 powerpc*-*-linux*) | |
| 384 saved_CFLAGS="$CFLAGS" | |
| 385 CFLAGS="$CFLAGS -mabi=altivec -mvsx -mfloat128" | |
| 386 AC_CACHE_CHECK([for PowerPC ISA 2.06 to build __float128 libraries], | |
| 387 [libgcc_cv_powerpc_float128], | |
| 388 [AC_COMPILE_IFELSE( | |
| 389 [vector double dadd (vector double a, vector double b) { return a + b; }], | |
| 390 [libgcc_cv_powerpc_float128=yes], | |
| 391 [libgcc_cv_powerpc_float128=no])]) | |
| 392 | |
| 393 CFLAGS="$CFLAGS -mpower9-vector -mfloat128-hardware" | |
| 394 AC_CACHE_CHECK([for PowerPC ISA 3.0 to build hardware __float128 libraries], | |
| 395 [libgcc_cv_powerpc_float128_hw], | |
| 396 [AC_COMPILE_IFELSE( | |
| 397 [#include <sys/auxv.h> | |
| 398 #ifndef AT_PLATFORM | |
| 399 #error "AT_PLATFORM is not defined" | |
| 400 #endif | |
| 401 #ifndef __BUILTIN_CPU_SUPPORTS__ | |
| 402 #error "__builtin_cpu_supports is not available" | |
| 403 #endif | |
| 404 vector unsigned char add (vector unsigned char a, vector unsigned char b) | |
| 405 { | |
| 406 vector unsigned char ret; | |
| 407 __asm__ ("xsaddqp %0,%1,%2" : "=v" (ret) : "v" (a), "v" (b)); | |
| 408 return ret; | |
| 409 } | |
| 410 void *add_resolver (void) { return (void *) add; } | |
| 411 __float128 add_ifunc (__float128, __float128) | |
| 412 __attribute__ ((__ifunc__ ("add_resolver")));], | |
| 413 [libgcc_cv_powerpc_float128_hw=yes], | |
| 414 [libgcc_cv_powerpc_float128_hw=no])]) | |
| 415 CFLAGS="$saved_CFLAGS" | |
| 0 | 416 esac |
| 417 | |
| 418 # Collect host-machine-specific information. | |
| 419 . ${srcdir}/config.host | |
| 420 | |
| 111 | 421 # Used for constructing correct paths for offload compilers. |
| 422 accel_dir_suffix= | |
| 423 real_host_noncanonical=${host_noncanonical} | |
| 424 if test x"$enable_as_accelerator_for" != x; then | |
| 425 accel_dir_suffix=/accel/${target_noncanonical} | |
| 426 real_host_noncanonical=${enable_as_accelerator_for} | |
| 427 fi | |
| 428 AC_SUBST(accel_dir_suffix) | |
| 429 AC_SUBST(real_host_noncanonical) | |
| 430 | |
| 431 if test x"$enable_offload_targets" != x; then | |
| 432 extra_parts="${extra_parts} crtoffloadbegin.o crtoffloadend.o crtoffloadtable.o" | |
| 433 fi | |
| 434 | |
| 0 | 435 # Check if Solaris/x86 linker supports ZERO terminator unwind entries. |
| 436 # This is after config.host so we can augment tmake_file. | |
| 437 # Link with -nostartfiles -nodefaultlibs since neither are present while | |
| 438 # building libgcc. | |
| 439 case ${host} in | |
| 111 | 440 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*) |
| 0 | 441 cat > conftest.s <<EOF |
| 442 .section .eh_frame,"a",@unwind | |
| 443 .zero 4 | |
| 444 .section .jcr,"aw",@progbits | |
| 445 .zero 8 | |
| 446 EOF | |
| 447 if AC_TRY_COMMAND(${CC-cc} -shared -nostartfiles -nodefaultlibs -o conftest.so conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
| 111 | 448 tmake_file="${tmake_file} i386/t-crtstuff" |
| 449 fi | |
| 450 ;; | |
| 451 esac | |
| 452 | |
| 453 # Check if xtensa target is configured for windowed ABI and thus needs to use | |
| 454 # custom unwind code. | |
| 455 # This is after config.host so we can augment tmake_file. | |
| 456 case ${host} in | |
| 457 xtensa*-*) | |
| 458 cat > conftest.c <<EOF | |
| 459 #ifdef __XTENSA_CALL0_ABI__ | |
| 460 #error | |
| 461 #endif | |
| 462 EOF | |
| 463 if AC_TRY_COMMAND(${CC-cc} -E -o conftest.i conftest.c 1>&AS_MESSAGE_LOG_FD); then | |
| 464 tmake_file="${tmake_file} xtensa/t-windowed" | |
| 0 | 465 fi |
| 466 ;; | |
| 467 esac | |
| 468 | |
| 469 # Check for visibility support. This is after config.host so that | |
| 470 # we can check for asm_hidden_op. | |
| 471 AC_CACHE_CHECK([for __attribute__((visibility("hidden")))], | |
| 472 libgcc_cv_hidden_visibility_attribute, [ | |
| 473 echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1; }' > conftest.c | |
| 474 libgcc_cv_hidden_visibility_attribute=no | |
| 475 if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
| 476 if grep "\\$asm_hidden_op.*foo" conftest.s >/dev/null; then | |
| 477 libgcc_cv_hidden_visibility_attribute=yes | |
| 478 fi | |
| 479 fi | |
| 480 rm -f conftest.* | |
| 481 ]) | |
| 482 | |
| 483 if test $libgcc_cv_hidden_visibility_attribute = yes; then | |
| 484 vis_hide='-fvisibility=hidden -DHIDE_EXPORTS' | |
| 485 else | |
| 486 vis_hide= | |
| 487 fi | |
| 488 AC_SUBST(vis_hide) | |
| 489 | |
| 490 # See if we have thread-local storage. We can only test assembler | |
| 111 | 491 # since link-time and run-time tests require the newly built |
| 0 | 492 # gcc, which can't be used to build executable due to that libgcc |
| 493 # is yet to be built here. | |
| 494 GCC_CHECK_CC_TLS | |
| 495 set_have_cc_tls= | |
| 496 if test "$enable_tls $gcc_cv_have_cc_tls" = "yes yes"; then | |
| 497 set_have_cc_tls="-DHAVE_CC_TLS" | |
| 498 fi | |
| 499 AC_SUBST(set_have_cc_tls) | |
| 500 | |
|
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501 # See if we have emulated thread-local storage. |
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502 GCC_CHECK_EMUTLS |
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503 set_use_emutls= |
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504 if test "$enable_tls $gcc_cv_use_emutls" = "yes yes"; then |
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505 set_use_emutls="-DUSE_EMUTLS" |
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506 fi |
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507 AC_SUBST(set_use_emutls) |
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508 |
| 111 | 509 dnl Check if as supports AVX instructions. |
| 510 AC_DEFUN([LIBGCC_CHECK_AS_AVX], [ | |
| 511 case "${target}" in | |
| 512 i[[34567]]86-*-* | x86_64-*-*) | |
| 513 AC_CACHE_CHECK([if the assembler supports AVX], libgcc_cv_as_avx, [ | |
| 514 AC_TRY_COMPILE([], [asm("vzeroupper");], | |
| 515 [libgcc_cv_as_avx=yes], [libgcc_cv_as_avx=no]) | |
| 516 ]) | |
| 517 if test x$libgcc_cv_as_avx = xyes; then | |
| 518 AC_DEFINE(HAVE_AS_AVX, 1, [Define to 1 if the assembler supports AVX.]) | |
| 519 fi | |
| 520 ;; | |
| 521 esac]) | |
| 522 LIBGCC_CHECK_AS_AVX | |
| 523 | |
| 524 dnl Check if as supports RTM instructions. | |
| 525 AC_CACHE_CHECK(for init priority support, libgcc_cv_init_priority, [ | |
| 526 AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, | |
| 527 [[void ip (void) __attribute__ ((constructor (1)));]])], | |
| 528 [libgcc_cv_init_priority=yes],[libgcc_cv_init_priority=no])]) | |
| 529 if test $libgcc_cv_init_priority = yes; then | |
| 530 AC_DEFINE(HAVE_INIT_PRIORITY, 1, | |
| 531 [Define if the compiler supports init priority.]) | |
| 532 fi | |
| 533 | |
| 534 # Conditionalize the sfp-machine.h header for this target machine. | |
| 535 if test -z "${sfp_machine_header}"; then | |
| 536 sfp_machine_header=$cpu_type/sfp-machine.h | |
| 537 if test -f ${srcdir}/config/${sfp_machine_header}; then | |
| 538 : | |
| 539 else | |
| 540 sfp_machine_header=no-sfp-machine.h | |
| 541 fi | |
| 542 fi | |
| 543 AC_SUBST(sfp_machine_header) | |
| 544 | |
| 0 | 545 # Conditionalize the makefile for this target machine. |
| 546 tmake_file_= | |
| 547 for f in ${tmake_file} | |
| 548 do | |
| 549 if test -f ${srcdir}/config/$f | |
| 550 then | |
| 551 tmake_file_="${tmake_file_} \$(srcdir)/config/$f" | |
| 552 fi | |
| 553 done | |
| 554 tmake_file="${tmake_file_}" | |
| 555 AC_SUBST(tmake_file) | |
| 556 | |
| 111 | 557 # Likewise export definitions for libgcc_tm.h |
| 558 tm_file_= | |
| 559 for f in ${tm_file} | |
| 560 do | |
| 561 tm_file_="${tm_file_} \$(srcdir)/config/$f" | |
| 562 done | |
| 563 tm_file="${tm_file_}" | |
| 564 AC_SUBST(tm_file) | |
| 565 AC_SUBST(tm_defines) | |
| 566 | |
| 567 # Map from thread model to thread header. | |
| 568 GCC_AC_THREAD_HEADER([$target_thread_file]) | |
| 569 | |
| 570 # Determine what GCC version number to use in filesystem paths. | |
| 571 GCC_BASE_VER | |
| 572 | |
| 0 | 573 # Substitute configuration variables |
| 111 | 574 AC_SUBST(cpu_type) |
| 0 | 575 AC_SUBST(extra_parts) |
| 576 AC_SUBST(asm_hidden_op) | |
| 111 | 577 AC_SUBST(enable_execute_stack) |
| 578 AC_SUBST(unwind_header) | |
| 579 AC_SUBST(md_unwind_header) | |
| 580 AC_SUBST(sfp_machine_header) | |
| 581 AC_SUBST(thread_header) | |
| 0 | 582 |
| 583 # We need multilib support. | |
| 584 AC_CONFIG_FILES([Makefile]) | |
| 585 AC_CONFIG_COMMANDS([default], | |
| 586 [[test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h | |
| 587 if test -n "$CONFIG_FILES"; then | |
| 588 # FIXME: We shouldn't need to set ac_file | |
| 589 ac_file=Makefile | |
| 590 . ${libgcc_topdir}/config-ml.in | |
| 591 fi]], | |
| 592 [[srcdir=${srcdir} | |
| 593 host=${host} | |
| 594 with_target_subdir=${with_target_subdir} | |
| 595 with_multisubdir=${with_multisubdir} | |
| 596 ac_configure_args="--enable-multilib ${ac_configure_args}" | |
| 597 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh} | |
| 598 libgcc_topdir=${libgcc_topdir} | |
| 599 CC="${CC}" | |
| 600 ]]) | |
| 601 AC_OUTPUT |