]>
Commit | Line | Data |
---|---|---|
fa958513 DJ |
1 | dnl Process this file with autoconf to produce a configure script. |
2 | ||
6f461e76 L |
3 | sinclude(../config/enable.m4) |
4 | sinclude(../config/tls.m4) | |
e8e66971 | 5 | sinclude(../config/toolexeclibdir.m4) |
fa958513 DJ |
6 | sinclude(../config/acx.m4) |
7 | sinclude(../config/no-executables.m4) | |
ca24c5ad | 8 | sinclude(../config/lib-ld.m4) |
18c04407 | 9 | sinclude(../config/override.m4) |
f9989b51 | 10 | sinclude(../config/picflag.m4) |
3c39bca6 | 11 | sinclude(../config/dfp.m4) |
201cdb74 | 12 | sinclude(../config/unwind_ipinfo.m4) |
1183dc2c | 13 | sinclude(../config/gthr.m4) |
9b92a9f3 | 14 | sinclude(../config/sjlj.m4) |
1ecae1fc | 15 | sinclude(../config/cet.m4) |
fa958513 | 16 | |
fa958513 DJ |
17 | AC_INIT([GNU C Runtime Library], 1.0,,[libgcc]) |
18 | AC_CONFIG_SRCDIR([static-object.mk]) | |
19 | ||
07ba94b9 AP |
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 | ||
fa958513 DJ |
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) | |
aca06c90 | 50 | AC_CONFIG_HEADER(auto-target.h:config.in) |
fa958513 DJ |
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 | ||
1765b023 RV |
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 | ||
2077db1b CT |
76 | AC_ARG_ENABLE(vtable-verify, |
77 | [ --enable-vtable-verify Enable vtable verification feature ], | |
78 | [case "$enableval" in | |
79 | yes) enable_vtable_verify=yes ;; | |
80 | no) enable_vtable_verify=no ;; | |
81 | *) enable_vtable_verify=no;; | |
82 | esac], | |
83 | [enable_vtable_verify=no]) | |
84 | AC_SUBST(enable_vtable_verify) | |
85 | ||
dd913323 MH |
86 | AC_ARG_WITH(aix-soname, |
87 | [AS_HELP_STRING([--with-aix-soname=aix|svr4|both], | |
88 | [shared library versioning (aka "SONAME") variant to provide on AIX])], | |
89 | [case "${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 | ||
f9989b51 RO |
103 | GCC_PICFLAG |
104 | AC_SUBST(PICFLAG) | |
105 | ||
d6efbf5a DJ |
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 | ||
e8e66971 MR |
117 | GCC_WITH_TOOLEXECLIBDIR |
118 | ||
fa958513 DJ |
119 | AC_ARG_WITH(slibdir, |
120 | [ --with-slibdir=DIR shared libraries in DIR [LIBDIR]], | |
121 | slibdir="$with_slibdir", | |
e8e66971 | 122 | [if test "${version_specific_libs}" = yes; then |
fa958513 | 123 | slibdir='$(libsubdir)' |
d6efbf5a | 124 | elif test -n "$with_cross_host" && test x"$with_cross_host" != x"no"; then |
e8e66971 MR |
125 | case ${with_toolexeclibdir} in |
126 | no) | |
127 | slibdir='$(exec_prefix)/$(host_noncanonical)/lib' | |
128 | ;; | |
129 | *) | |
130 | slibdir=${with_toolexeclibdir} | |
131 | ;; | |
132 | esac | |
fa958513 DJ |
133 | else |
134 | slibdir='$(libdir)' | |
e8e66971 | 135 | fi]) |
fa958513 DJ |
136 | AC_SUBST(slibdir) |
137 | ||
6efbd53f RW |
138 | # Command-line options. |
139 | # Very limited version of AC_MAINTAINER_MODE. | |
140 | AC_ARG_ENABLE([maintainer-mode], | |
141 | [AC_HELP_STRING([--enable-maintainer-mode], | |
142 | [enable make rules and dependencies not useful (and | |
143 | sometimes confusing) to the casual installer])], | |
144 | [case ${enable_maintainer_mode} in | |
145 | yes) MAINT='' ;; | |
146 | no) MAINT='#' ;; | |
147 | *) AC_MSG_ERROR([--enable-maintainer-mode must be yes or no]) ;; | |
148 | esac | |
149 | maintainer_mode=${enableval}], | |
150 | [MAINT='#']) | |
151 | AC_SUBST([MAINT])dnl | |
152 | ||
fa958513 DJ |
153 | AC_PROG_INSTALL |
154 | ||
155 | AC_PROG_AWK | |
156 | # We need awk; bail out if it's missing. | |
157 | case ${AWK} in | |
158 | "") AC_MSG_ERROR([can't build without awk, bailing out]) ;; | |
159 | esac | |
160 | ||
161 | AC_CANONICAL_HOST | |
162 | ACX_NONCANONICAL_HOST | |
58c741a6 | 163 | ACX_NONCANONICAL_TARGET |
14e8fc8b | 164 | GCC_TOPLEV_SUBDIRS |
fa958513 | 165 | |
58c741a6 DK |
166 | # Calculate toolexeclibdir |
167 | # Also toolexecdir, though it's only used in toolexeclibdir | |
168 | case ${version_specific_libs} in | |
169 | yes) | |
170 | # Need the gcc compiler version to know where to install libraries | |
171 | # and header files if --enable-version-specific-runtime-libs option | |
172 | # is selected. | |
173 | toolexecdir='$(libdir)/gcc/$(target_noncanonical)' | |
174 | toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)' | |
175 | ;; | |
176 | no) | |
177 | if test -n "$with_cross_host" && | |
178 | test x"$with_cross_host" != x"no"; then | |
179 | # Install a library built with a cross compiler in tooldir, not libdir. | |
180 | toolexecdir='$(exec_prefix)/$(target_noncanonical)' | |
e8e66971 MR |
181 | case ${with_toolexeclibdir} in |
182 | no) | |
183 | toolexeclibdir='$(toolexecdir)/lib' | |
184 | ;; | |
185 | *) | |
186 | toolexeclibdir=${with_toolexeclibdir} | |
187 | ;; | |
188 | esac | |
58c741a6 DK |
189 | else |
190 | toolexecdir='$(libdir)/gcc-lib/$(target_noncanonical)' | |
191 | toolexeclibdir='$(libdir)' | |
192 | fi | |
193 | multi_os_directory=`$CC -print-multi-os-directory` | |
194 | case $multi_os_directory in | |
195 | .) ;; # Avoid trailing /. | |
196 | *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;; | |
197 | esac | |
198 | ;; | |
199 | esac | |
200 | AC_SUBST(toolexecdir) | |
201 | AC_SUBST(toolexeclibdir) | |
202 | ||
fa958513 DJ |
203 | dnl These must be called before AM_PROG_LIBTOOL, because it may want |
204 | dnl to call AC_CHECK_PROG. | |
205 | AC_CHECK_TOOL(AR, ar) | |
206 | AC_CHECK_TOOL(LIPO, lipo, :) | |
207 | AC_CHECK_TOOL(NM, nm) | |
208 | AC_CHECK_TOOL(RANLIB, ranlib, :) | |
209 | AC_CHECK_TOOL(STRIP, strip, :) | |
210 | AC_PROG_LN_S | |
211 | ||
212 | GCC_NO_EXECUTABLES | |
213 | AC_PROG_CC | |
214 | AC_PROG_CPP_WERROR | |
215 | ||
a51a76e5 RB |
216 | AC_SYS_LARGEFILE |
217 | ||
569dc494 RO |
218 | AC_CHECK_SIZEOF([double]) |
219 | AC_CHECK_SIZEOF([long double]) | |
220 | AS_VAR_ARITH([double_type_size], [$ac_cv_sizeof_double \* 8]) | |
221 | AS_VAR_ARITH([long_double_type_size], [$ac_cv_sizeof_long_double \* 8]) | |
222 | AC_SUBST(double_type_size) | |
223 | AC_SUBST(long_double_type_size) | |
224 | ||
0e4a0def KT |
225 | AC_CHECK_HEADERS(inttypes.h stdint.h stdlib.h ftw.h \ |
226 | unistd.h sys/stat.h sys/types.h \ | |
58d169ba | 227 | string.h strings.h memory.h sys/auxv.h) |
0e4a0def KT |
228 | AC_HEADER_STDC |
229 | ||
fa958513 DJ |
230 | # Check for decimal float support. |
231 | AC_CACHE_CHECK([whether decimal floating point is supported], [libgcc_cv_dfp], | |
ac088ba1 BRF |
232 | [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ |
233 | #include <fenv.h> | |
234 | ]], [[ | |
235 | _Decimal32 x; | |
236 | int fe_except = | |
237 | FE_INVALID|FE_DIVBYZERO|FE_OVERFLOW|FE_UNDERFLOW|FE_INEXACT; | |
238 | ]])], | |
239 | [libgcc_cv_dfp=yes], | |
fa958513 DJ |
240 | [libgcc_cv_dfp=no])]) |
241 | decimal_float=$libgcc_cv_dfp | |
242 | AC_SUBST(decimal_float) | |
243 | ||
3c39bca6 | 244 | GCC_AC_ENABLE_DECIMAL_FLOAT([$host]) |
79b87c74 | 245 | |
8d2a9e0e CF |
246 | # Check for fixed-point support. |
247 | AC_CACHE_CHECK([whether fixed-point is supported], [libgcc_cv_fixed_point], | |
22e05272 JM |
248 | [AC_COMPILE_IFELSE([AC_LANG_SOURCE([_Sat _Fract x;])], |
249 | [libgcc_cv_fixed_point=yes], | |
8d2a9e0e CF |
250 | [libgcc_cv_fixed_point=no])]) |
251 | fixed_point=$libgcc_cv_fixed_point | |
252 | AC_SUBST(fixed_point) | |
ff473280 | 253 | |
201cdb74 RO |
254 | # For platforms with the unwind ABI which includes an unwind library, |
255 | # libunwind, we can choose to use the system libunwind. | |
256 | # config.gcc also contains tests of with_system_libunwind. | |
257 | GCC_CHECK_UNWIND_GETIPINFO | |
258 | ||
9b92a9f3 EB |
259 | # Check if the compiler is configured for setjmp/longjmp exceptions. |
260 | GCC_CHECK_SJLJ_EXCEPTIONS | |
b040f2be | 261 | |
1ecae1fc IT |
262 | GCC_CET_FLAGS(CET_FLAGS) |
263 | AC_SUBST(CET_FLAGS) | |
264 | ||
598a1586 HPN |
265 | AC_ARG_ENABLE([explicit-exception-frame-registration], |
266 | [AC_HELP_STRING([--enable-explicit-exception-frame-registration], | |
267 | [register exception tables explicitly at module start, for use | |
268 | e.g. for compatibility with installations without PT_GNU_EH_FRAME support])], | |
269 | [ | |
270 | force_explicit_eh_registry= | |
271 | if test "$enable_explicit_exception_frame_registration" = yes; then | |
9b92a9f3 EB |
272 | if test $ac_cv_sjlj_exceptions = yes; then |
273 | AC_MSG_ERROR([Can't --enable-explicit-exception-frame-registration | |
274 | with setjmp/longjmp exceptions]) | |
598a1586 HPN |
275 | fi |
276 | force_explicit_eh_registry=-DUSE_EH_FRAME_REGISTRY_ALWAYS | |
277 | fi | |
278 | ]) | |
279 | AC_SUBST([force_explicit_eh_registry]) | |
280 | ||
5a460280 ID |
281 | AC_ARG_ENABLE([tm-clone-registry], |
282 | [ --disable-tm-clone-registry disable TM clone registry], | |
283 | [ | |
284 | use_tm_clone_registry= | |
285 | if test "$enable_tm_clone_registry" = no; then | |
286 | use_tm_clone_registry=-DUSE_TM_CLONE_REGISTRY=0 | |
287 | fi | |
e8aa9f55 JL |
288 | ], |
289 | [ | |
290 | use_tm_clone_registry= | |
291 | case $target in | |
292 | msp430*elfbare) | |
293 | use_tm_clone_registry=-DUSE_TM_CLONE_REGISTRY=0 | |
294 | ;; | |
295 | esac | |
5a460280 ID |
296 | ]) |
297 | AC_SUBST([use_tm_clone_registry]) | |
298 | ||
ca24c5ad RO |
299 | AC_LIB_PROG_LD_GNU |
300 | ||
ee33b5f0 RO |
301 | AC_MSG_CHECKING([for thread model used by GCC]) |
302 | target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'` | |
303 | AC_MSG_RESULT([$target_thread_file]) | |
304 | ||
b6110d6d ILT |
305 | # Check for assembler CFI support. |
306 | AC_CACHE_CHECK([whether assembler supports CFI directives], [libgcc_cv_cfi], | |
6dace308 | 307 | [AC_COMPILE_IFELSE( |
22e05272 | 308 | [AC_LANG_SOURCE([asm("\n\ |
6dace308 ILT |
309 | .text\n\ |
310 | .cfi_startproc\n\ | |
311 | .cfi_personality 0, symbol\n\ | |
22e05272 | 312 | .cfi_endproc");])], |
6dace308 ILT |
313 | [libgcc_cv_cfi=yes], |
314 | [libgcc_cv_cfi=no])]) | |
b6110d6d | 315 | |
1ea0a651 RS |
316 | # Check 32bit or 64bit. In the case of MIPS, this really determines the |
317 | # word size rather than the address size. | |
1bb6f778 | 318 | cat > conftest.c <<EOF |
1ea0a651 RS |
319 | #if defined(__x86_64__) || (!defined(__i386__) && defined(__LP64__)) \ |
320 | || defined(__mips64) | |
ff473280 L |
321 | host_address=64 |
322 | #else | |
323 | host_address=32 | |
324 | #endif | |
325 | EOF | |
1bb6f778 DM |
326 | eval `${CC-cc} -E conftest.c | grep host_address=` |
327 | rm -f conftest.c | |
8d2a9e0e | 328 | |
1c51d688 RS |
329 | case ${host} in |
330 | mips*-*-*) | |
331 | AC_CACHE_CHECK([whether the target is hard-float], | |
332 | [libgcc_cv_mips_hard_float], | |
333 | [AC_COMPILE_IFELSE( | |
22e05272 | 334 | [AC_LANG_SOURCE([#ifndef __mips_hard_float |
1c51d688 | 335 | #error FOO |
22e05272 JM |
336 | #endif |
337 | ])], | |
1c51d688 RS |
338 | [libgcc_cv_mips_hard_float=yes], |
339 | [libgcc_cv_mips_hard_float=no])]) | |
340 | esac | |
341 | ||
2d110442 RO |
342 | case ${host} in |
343 | *-*-solaris2*) | |
f021f1d3 | 344 | # Check for system-provided CRTs on Solaris 11.4. |
2d110442 RO |
345 | AC_CACHE_CHECK([system-provided CRTs on Solaris], |
346 | [libgcc_cv_solaris_crts], | |
347 | [libgcc_cv_solaris_crts=no | |
348 | libgcc_sysroot="`${CC} -print-sysroot`" | |
349 | libgcc_libdir="$libgcc_sysroot/usr/lib" | |
350 | # At the time they were added, gcrt1.o became a symlink for backwards | |
351 | # compatibility on x86, while crt1.o was added on sparc, so check for that. | |
352 | case ${host} in | |
353 | i?86-*-solaris2* | x86_64-*-solaris2*) | |
354 | if test -h "$libgcc_libdir/gcrt1.o"; then libgcc_cv_solaris_crts=yes; fi | |
355 | ;; | |
356 | sparc*-*-solaris2*) | |
357 | if test -f "$libgcc_libdir/crt1.o"; then libgcc_cv_solaris_crts=yes; fi | |
358 | ;; | |
359 | esac]) | |
360 | if test $libgcc_cv_solaris_crts = yes; then | |
361 | AC_DEFINE(HAVE_SOLARIS_CRTS, 1, | |
362 | [Define if the system-provided CRTs are present on Solaris.]) | |
363 | fi | |
364 | ;; | |
365 | esac | |
366 | ||
e610393c JM |
367 | # Determine the version of glibc, if any, used on the target. |
368 | AC_MSG_CHECKING([for target glibc version]) | |
369 | AC_ARG_WITH([glibc-version], | |
370 | [AS_HELP_STRING([--with-glibc-version=M.N], | |
371 | [assume GCC used with glibc version M.N or later])], [ | |
372 | if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then | |
373 | glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'` | |
374 | glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'` | |
375 | else | |
376 | AC_MSG_ERROR([option --with-glibc-version requires a version number M.N]) | |
377 | fi], [ | |
378 | AC_COMPUTE_INT([glibc_version_major], [__GLIBC__], | |
379 | [#include <features.h>], | |
380 | [glibc_version_major=0]) | |
381 | AC_COMPUTE_INT([glibc_version_minor], [__GLIBC_MINOR__], | |
382 | [#include <features.h>], | |
383 | [glibc_version_minor=0])]) | |
384 | AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor]) | |
385 | ||
d80c2bea JM |
386 | # Determine floating-point type for powerpc*-*-linux*. |
387 | # Single-precision-only FPRs are not a supported configuration for | |
388 | # this target, so are not allowed for in this test. | |
389 | case ${host} in | |
390 | powerpc*-*-linux*) | |
391 | cat > conftest.c <<EOF | |
392 | #ifdef __powerpc64__ | |
393 | ppc_fp_type=64 | |
394 | #elif defined _SOFT_FLOAT | |
395 | ppc_fp_type=soft | |
396 | #elif defined _SOFT_DOUBLE | |
397 | ppc_fp_type=e500v1 | |
398 | #elif defined __NO_FPRS__ | |
399 | ppc_fp_type=e500v2 | |
400 | #else | |
401 | ppc_fp_type=hard | |
402 | #endif | |
403 | EOF | |
404 | eval `${CC-cc} -E conftest.c | grep ppc_fp_type=` | |
405 | rm -f conftest.c | |
e610393c JM |
406 | # glibc 2.19 and later provide all the soft-fp functions, with proper |
407 | # interactions with <fenv.h> exception and rounding mode handling, so | |
408 | # make libgcc's versions into compat symbols if a recent enough glibc | |
409 | # version is being used. | |
410 | ppc_fp_compat= | |
411 | case ${ppc_fp_type} in | |
412 | soft|e500v1|e500v2) | |
413 | if test $glibc_version_major -gt 2 \ | |
414 | || ( test $glibc_version_major -eq 2 \ | |
415 | && test $glibc_version_minor -ge 19 ); then | |
416 | ppc_fp_compat="t-softfp-compat" | |
417 | fi | |
418 | ;; | |
419 | esac | |
d80c2bea JM |
420 | ;; |
421 | esac | |
422 | ||
a71c0334 | 423 | case ${host} in |
3787ee47 MM |
424 | # At present, we cannot turn -mfloat128 on via #pragma GCC target, so just |
425 | # check if we have VSX (ISA 2.06) support to build the software libraries, and | |
426 | # whether the assembler can handle xsaddqp for hardware support. Also check if | |
ef836167 | 427 | # a new glibc is being used so that __builtin_cpu_supports can be used. |
a71c0334 | 428 | powerpc*-*-linux*) |
7502c597 SB |
429 | saved_CFLAGS="$CFLAGS" |
430 | CFLAGS="$CFLAGS -mabi=altivec -mvsx -mfloat128" | |
35fbda43 | 431 | AC_CACHE_CHECK([for PowerPC ISA 2.06 to build __float128 libraries], |
a71c0334 MM |
432 | [libgcc_cv_powerpc_float128], |
433 | [AC_COMPILE_IFELSE( | |
22e05272 | 434 | [AC_LANG_SOURCE([vector double dadd (vector double a, vector double b) { return a + b; }])], |
a71c0334 MM |
435 | [libgcc_cv_powerpc_float128=yes], |
436 | [libgcc_cv_powerpc_float128=no])]) | |
437 | ||
7502c597 | 438 | CFLAGS="$CFLAGS -mpower9-vector -mfloat128-hardware" |
35fbda43 | 439 | AC_CACHE_CHECK([for PowerPC ISA 3.0 to build hardware __float128 libraries], |
a71c0334 MM |
440 | [libgcc_cv_powerpc_float128_hw], |
441 | [AC_COMPILE_IFELSE( | |
22e05272 | 442 | [AC_LANG_SOURCE([#include <sys/auxv.h> |
a71c0334 MM |
443 | #ifndef AT_PLATFORM |
444 | #error "AT_PLATFORM is not defined" | |
445 | #endif | |
3787ee47 MM |
446 | #ifndef __BUILTIN_CPU_SUPPORTS__ |
447 | #error "__builtin_cpu_supports is not available" | |
448 | #endif | |
7502c597 | 449 | vector unsigned char add (vector unsigned char a, vector unsigned char b) |
a71c0334 | 450 | { |
35fbda43 | 451 | vector unsigned char ret; |
a71c0334 MM |
452 | __asm__ ("xsaddqp %0,%1,%2" : "=v" (ret) : "v" (a), "v" (b)); |
453 | return ret; | |
454 | } | |
455 | void *add_resolver (void) { return (void *) add; } | |
456 | __float128 add_ifunc (__float128, __float128) | |
22e05272 | 457 | __attribute__ ((__ifunc__ ("add_resolver")));])], |
a71c0334 MM |
458 | [libgcc_cv_powerpc_float128_hw=yes], |
459 | [libgcc_cv_powerpc_float128_hw=no])]) | |
7502c597 | 460 | CFLAGS="$saved_CFLAGS" |
a71c0334 MM |
461 | esac |
462 | ||
fa958513 DJ |
463 | # Collect host-machine-specific information. |
464 | . ${srcdir}/config.host | |
465 | ||
85c64bbe BS |
466 | # Used for constructing correct paths for offload compilers. |
467 | accel_dir_suffix= | |
d28ad5d4 | 468 | real_host_noncanonical=${host_noncanonical} |
85c64bbe BS |
469 | if test x"$enable_as_accelerator_for" != x; then |
470 | accel_dir_suffix=/accel/${target_noncanonical} | |
d28ad5d4 | 471 | real_host_noncanonical=${enable_as_accelerator_for} |
85c64bbe BS |
472 | fi |
473 | AC_SUBST(accel_dir_suffix) | |
d28ad5d4 | 474 | AC_SUBST(real_host_noncanonical) |
85c64bbe BS |
475 | |
476 | if test x"$enable_offload_targets" != x; then | |
e6861a99 | 477 | extra_parts="${extra_parts} crtoffloadbegin.o crtoffloadend.o crtoffloadtable.o" |
85c64bbe BS |
478 | fi |
479 | ||
19523300 RO |
480 | # Check if Solaris/x86 linker supports ZERO terminator unwind entries. |
481 | # This is after config.host so we can augment tmake_file. | |
482 | # Link with -nostartfiles -nodefaultlibs since neither are present while | |
483 | # building libgcc. | |
484 | case ${host} in | |
ccd1242e | 485 | i?86-*-solaris2* | x86_64-*-solaris2*) |
19523300 RO |
486 | cat > conftest.s <<EOF |
487 | .section .eh_frame,"a",@unwind | |
488 | .zero 4 | |
489 | .section .jcr,"aw",@progbits | |
490 | .zero 8 | |
491 | EOF | |
492 | if AC_TRY_COMMAND(${CC-cc} -shared -nostartfiles -nodefaultlibs -o conftest.so conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
4a8bb046 | 493 | tmake_file="${tmake_file} i386/t-crtstuff" |
19523300 RO |
494 | fi |
495 | ;; | |
496 | esac | |
497 | ||
53c6feb2 RO |
498 | # Check if Solaris linker support v2 linker mapfile syntax. |
499 | # Link with -nostartfiles -nodefaultlibs since neither are present while | |
500 | # building libgcc. | |
501 | case ${host} in | |
502 | *-*-solaris2*) | |
503 | solaris_ld_v2_maps=no | |
504 | echo 'int main(void) {return 0;}' > conftest.c | |
505 | echo '$mapfile_version 2' > conftest.map | |
506 | if AC_TRY_COMMAND([${CC-cc} -nostartfiles -nodefaultlibs -Wl,-M,conftest.map -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD]); then | |
507 | solaris_ld_v2_maps=yes | |
508 | fi | |
509 | ;; | |
510 | esac | |
511 | AC_SUBST(solaris_ld_v2_maps) | |
512 | ||
590e2636 MF |
513 | # Check if xtensa target is configured for windowed ABI and thus needs to use |
514 | # custom unwind code. | |
515 | # This is after config.host so we can augment tmake_file. | |
516 | case ${host} in | |
517 | xtensa*-*) | |
518 | cat > conftest.c <<EOF | |
519 | #ifdef __XTENSA_CALL0_ABI__ | |
520 | #error | |
521 | #endif | |
522 | EOF | |
523 | if AC_TRY_COMMAND(${CC-cc} -E -o conftest.i conftest.c 1>&AS_MESSAGE_LOG_FD); then | |
524 | tmake_file="${tmake_file} xtensa/t-windowed" | |
525 | fi | |
526 | ;; | |
527 | esac | |
528 | ||
fa958513 DJ |
529 | # Check for visibility support. This is after config.host so that |
530 | # we can check for asm_hidden_op. | |
531 | AC_CACHE_CHECK([for __attribute__((visibility("hidden")))], | |
532 | libgcc_cv_hidden_visibility_attribute, [ | |
533 | echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1; }' > conftest.c | |
534 | libgcc_cv_hidden_visibility_attribute=no | |
535 | if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
536 | if grep "\\$asm_hidden_op.*foo" conftest.s >/dev/null; then | |
537 | libgcc_cv_hidden_visibility_attribute=yes | |
538 | fi | |
539 | fi | |
540 | rm -f conftest.* | |
541 | ]) | |
542 | ||
543 | if test $libgcc_cv_hidden_visibility_attribute = yes; then | |
544 | vis_hide='-fvisibility=hidden -DHIDE_EXPORTS' | |
ce579a4f | 545 | AC_DEFINE_UNQUOTED(AS_HIDDEN_DIRECTIVE, $asm_hidden_op, [Define to the .hidden-like directive if it exists.]) |
fa958513 DJ |
546 | else |
547 | vis_hide= | |
548 | fi | |
549 | AC_SUBST(vis_hide) | |
550 | ||
ce579a4f JJ |
551 | # Check for .cfi_sections .debug_frame support. |
552 | AC_CACHE_CHECK([for .cfi_sections .debug_frame], | |
553 | libgcc_cv_cfi_sections_directive, [ | |
554 | echo 'int foo (int, char *);' > conftest.c | |
555 | echo 'int bar (int x) { char *y = __builtin_alloca (x); return foo (x + 1, y) + 1; }' >> conftest.c | |
556 | libgcc_cv_cfi_sections_directive=no | |
557 | if AC_TRY_COMMAND(${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 | |
558 | if grep "\\.cfi_sections.*\\.debug_frame" conftest.s >/dev/null; then | |
559 | libgcc_cv_cfi_sections_directive=yes | |
560 | fi | |
561 | fi | |
562 | rm -f conftest.* | |
563 | ]) | |
564 | if test $libgcc_cv_cfi_sections_directive = yes; then | |
565 | AC_DEFINE(HAVE_AS_CFI_SECTIONS, 1, [Define to 1 if the assembler supports .cfi_sections .debug_frame directive.]) | |
566 | fi | |
567 | ||
6f461e76 | 568 | # See if we have thread-local storage. We can only test assembler |
d8c9d391 | 569 | # since link-time and run-time tests require the newly built |
6f461e76 L |
570 | # gcc, which can't be used to build executable due to that libgcc |
571 | # is yet to be built here. | |
572 | GCC_CHECK_CC_TLS | |
22867d02 | 573 | set_have_cc_tls= |
b4e9c2c6 | 574 | if test "$enable_tls $gcc_cv_have_cc_tls" = "yes yes"; then |
6f461e76 L |
575 | set_have_cc_tls="-DHAVE_CC_TLS" |
576 | fi | |
577 | AC_SUBST(set_have_cc_tls) | |
578 | ||
368fabd5 JH |
579 | # See if we have emulated thread-local storage. |
580 | GCC_CHECK_EMUTLS | |
581 | set_use_emutls= | |
582 | if test "$enable_tls $gcc_cv_use_emutls" = "yes yes"; then | |
583 | set_use_emutls="-DUSE_EMUTLS" | |
584 | fi | |
585 | AC_SUBST(set_use_emutls) | |
586 | ||
89762a83 DS |
587 | dnl Check if as supports AVX instructions. |
588 | AC_DEFUN([LIBGCC_CHECK_AS_AVX], [ | |
589 | case "${target}" in | |
590 | i[[34567]]86-*-* | x86_64-*-*) | |
591 | AC_CACHE_CHECK([if the assembler supports AVX], libgcc_cv_as_avx, [ | |
592 | AC_TRY_COMPILE([], [asm("vzeroupper");], | |
593 | [libgcc_cv_as_avx=yes], [libgcc_cv_as_avx=no]) | |
594 | ]) | |
595 | if test x$libgcc_cv_as_avx = xyes; then | |
596 | AC_DEFINE(HAVE_AS_AVX, 1, [Define to 1 if the assembler supports AVX.]) | |
597 | fi | |
598 | ;; | |
599 | esac]) | |
600 | LIBGCC_CHECK_AS_AVX | |
601 | ||
5b2f76e3 JJ |
602 | dnl Check if as supports LSE instructions. |
603 | AC_DEFUN([LIBGCC_CHECK_AS_LSE], [ | |
604 | case "${target}" in | |
605 | aarch64*-*-*) | |
606 | AC_CACHE_CHECK([if the assembler supports LSE], libgcc_cv_as_lse, [ | |
607 | AC_TRY_COMPILE([], | |
608 | changequote(,)dnl | |
609 | asm(".arch armv8-a+lse\n\tcas w0, w1, [x2]"); | |
610 | changequote([,])dnl | |
611 | , | |
612 | [libgcc_cv_as_lse=yes], [libgcc_cv_as_lse=no]) | |
613 | ]) | |
614 | if test x$libgcc_cv_as_lse = xyes; then | |
615 | AC_DEFINE(HAVE_AS_LSE, 1, [Define to 1 if the assembler supports LSE.]) | |
616 | fi | |
617 | ;; | |
618 | esac]) | |
619 | LIBGCC_CHECK_AS_LSE | |
620 | ||
89762a83 | 621 | dnl Check if as supports RTM instructions. |
aca06c90 RO |
622 | AC_CACHE_CHECK(for init priority support, libgcc_cv_init_priority, [ |
623 | AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, | |
624 | [[void ip (void) __attribute__ ((constructor (1)));]])], | |
625 | [libgcc_cv_init_priority=yes],[libgcc_cv_init_priority=no])]) | |
626 | if test $libgcc_cv_init_priority = yes; then | |
627 | AC_DEFINE(HAVE_INIT_PRIORITY, 1, | |
628 | [Define if the compiler supports init priority.]) | |
629 | fi | |
630 | ||
aca0b0b3 RO |
631 | # Conditionalize the sfp-machine.h header for this target machine. |
632 | if test -z "${sfp_machine_header}"; then | |
633 | sfp_machine_header=$cpu_type/sfp-machine.h | |
634 | if test -f ${srcdir}/config/${sfp_machine_header}; then | |
635 | : | |
636 | else | |
637 | sfp_machine_header=no-sfp-machine.h | |
638 | fi | |
639 | fi | |
640 | AC_SUBST(sfp_machine_header) | |
641 | ||
fa958513 DJ |
642 | # Conditionalize the makefile for this target machine. |
643 | tmake_file_= | |
644 | for f in ${tmake_file} | |
645 | do | |
646 | if test -f ${srcdir}/config/$f | |
647 | then | |
648 | tmake_file_="${tmake_file_} \$(srcdir)/config/$f" | |
649 | fi | |
650 | done | |
651 | tmake_file="${tmake_file_}" | |
652 | AC_SUBST(tmake_file) | |
653 | ||
852b75ed RO |
654 | # Likewise export definitions for libgcc_tm.h |
655 | tm_file_= | |
656 | for f in ${tm_file} | |
657 | do | |
658 | tm_file_="${tm_file_} \$(srcdir)/config/$f" | |
659 | done | |
660 | tm_file="${tm_file_}" | |
661 | AC_SUBST(tm_file) | |
662 | AC_SUBST(tm_defines) | |
663 | ||
5d1c8e77 | 664 | # Map from thread model to thread header. |
1183dc2c | 665 | GCC_AC_THREAD_HEADER([$target_thread_file]) |
5d1c8e77 | 666 | |
3c36aa6b JJ |
667 | # Determine what GCC version number to use in filesystem paths. |
668 | GCC_BASE_VER | |
669 | ||
fa958513 | 670 | # Substitute configuration variables |
ca24c5ad | 671 | AC_SUBST(cpu_type) |
fa958513 DJ |
672 | AC_SUBST(extra_parts) |
673 | AC_SUBST(asm_hidden_op) | |
7e02fd1b EB |
674 | AC_SUBST(enable_execute_stack) |
675 | AC_SUBST(unwind_header) | |
676 | AC_SUBST(md_unwind_header) | |
677 | AC_SUBST(sfp_machine_header) | |
678 | AC_SUBST(thread_header) | |
fa958513 DJ |
679 | |
680 | # We need multilib support. | |
681 | AC_CONFIG_FILES([Makefile]) | |
682 | AC_CONFIG_COMMANDS([default], | |
683 | [[test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h | |
684 | if test -n "$CONFIG_FILES"; then | |
685 | # FIXME: We shouldn't need to set ac_file | |
686 | ac_file=Makefile | |
687 | . ${libgcc_topdir}/config-ml.in | |
688 | fi]], | |
689 | [[srcdir=${srcdir} | |
690 | host=${host} | |
fa958513 DJ |
691 | with_target_subdir=${with_target_subdir} |
692 | with_multisubdir=${with_multisubdir} | |
693 | ac_configure_args="--enable-multilib ${ac_configure_args}" | |
694 | CONFIG_SHELL=${CONFIG_SHELL-/bin/sh} | |
695 | libgcc_topdir=${libgcc_topdir} | |
696 | CC="${CC}" | |
697 | ]]) | |
698 | AC_OUTPUT |