]>
Commit | Line | Data |
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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 | ||
2077db1b CT |
71 | AC_ARG_ENABLE(vtable-verify, |
72 | [ --enable-vtable-verify Enable vtable verification feature ], | |
73 | [case "$enableval" in | |
74 | yes) enable_vtable_verify=yes ;; | |
75 | no) enable_vtable_verify=no ;; | |
76 | *) enable_vtable_verify=no;; | |
77 | esac], | |
78 | [enable_vtable_verify=no]) | |
79 | AC_SUBST(enable_vtable_verify) | |
80 | ||
dd913323 MH |
81 | AC_ARG_WITH(aix-soname, |
82 | [AS_HELP_STRING([--with-aix-soname=aix|svr4|both], | |
83 | [shared library versioning (aka "SONAME") variant to provide on AIX])], | |
84 | [case "${host}:${enable_shared}" in | |
85 | power*-*-aix[[5-9]]*:yes) | |
86 | AC_MSG_CHECKING([which variant of shared library versioning to provide for shared libgcc]) | |
87 | case ${withval} in | |
88 | aix|svr4|both) ;; | |
89 | *) AC_MSG_ERROR([Unknown argument to --with-aix-soname]);; | |
90 | esac | |
91 | AC_MSG_RESULT($withval) | |
92 | ;; | |
93 | *) with_aix_soname=aix ;; | |
94 | esac | |
95 | ], [with_aix_soname=aix]) | |
96 | AC_SUBST(with_aix_soname) | |
97 | ||
f9989b51 RO |
98 | GCC_PICFLAG |
99 | AC_SUBST(PICFLAG) | |
100 | ||
d6efbf5a DJ |
101 | AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) |
102 | AC_ARG_ENABLE(version-specific-runtime-libs, | |
103 | [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ], | |
104 | [case "$enableval" in | |
105 | yes) version_specific_libs=yes ;; | |
106 | no) version_specific_libs=no ;; | |
107 | *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);; | |
108 | esac], | |
109 | [version_specific_libs=no]) | |
110 | AC_MSG_RESULT($version_specific_libs) | |
111 | ||
e8e66971 MR |
112 | GCC_WITH_TOOLEXECLIBDIR |
113 | ||
fa958513 DJ |
114 | AC_ARG_WITH(slibdir, |
115 | [ --with-slibdir=DIR shared libraries in DIR [LIBDIR]], | |
116 | slibdir="$with_slibdir", | |
e8e66971 | 117 | [if test "${version_specific_libs}" = yes; then |
fa958513 | 118 | slibdir='$(libsubdir)' |
d6efbf5a | 119 | elif test -n "$with_cross_host" && test x"$with_cross_host" != x"no"; then |
e8e66971 MR |
120 | case ${with_toolexeclibdir} in |
121 | no) | |
122 | slibdir='$(exec_prefix)/$(host_noncanonical)/lib' | |
123 | ;; | |
124 | *) | |
125 | slibdir=${with_toolexeclibdir} | |
126 | ;; | |
127 | esac | |
fa958513 DJ |
128 | else |
129 | slibdir='$(libdir)' | |
e8e66971 | 130 | fi]) |
fa958513 DJ |
131 | AC_SUBST(slibdir) |
132 | ||
6efbd53f RW |
133 | # Command-line options. |
134 | # Very limited version of AC_MAINTAINER_MODE. | |
135 | AC_ARG_ENABLE([maintainer-mode], | |
136 | [AC_HELP_STRING([--enable-maintainer-mode], | |
137 | [enable make rules and dependencies not useful (and | |
138 | sometimes confusing) to the casual installer])], | |
139 | [case ${enable_maintainer_mode} in | |
140 | yes) MAINT='' ;; | |
141 | no) MAINT='#' ;; | |
142 | *) AC_MSG_ERROR([--enable-maintainer-mode must be yes or no]) ;; | |
143 | esac | |
144 | maintainer_mode=${enableval}], | |
145 | [MAINT='#']) | |
146 | AC_SUBST([MAINT])dnl | |
147 | ||
fa958513 DJ |
148 | AC_PROG_INSTALL |
149 | ||
150 | AC_PROG_AWK | |
151 | # We need awk; bail out if it's missing. | |
152 | case ${AWK} in | |
153 | "") AC_MSG_ERROR([can't build without awk, bailing out]) ;; | |
154 | esac | |
155 | ||
156 | AC_CANONICAL_HOST | |
157 | ACX_NONCANONICAL_HOST | |
58c741a6 | 158 | ACX_NONCANONICAL_TARGET |
14e8fc8b | 159 | GCC_TOPLEV_SUBDIRS |
fa958513 | 160 | |
39be73d0 JM |
161 | AC_ARG_ENABLE(gcov, |
162 | [ --disable-gcov don't provide libgcov and related host tools], | |
163 | [], [case $target in | |
164 | bpf-*-*) | |
165 | enable_gcov=no | |
166 | ;; | |
167 | *) | |
168 | enable_gcov=yes | |
169 | ;; | |
170 | esac]) | |
171 | AC_SUBST(enable_gcov) | |
172 | ||
58c741a6 DK |
173 | # Calculate toolexeclibdir |
174 | # Also toolexecdir, though it's only used in toolexeclibdir | |
175 | case ${version_specific_libs} in | |
176 | yes) | |
177 | # Need the gcc compiler version to know where to install libraries | |
178 | # and header files if --enable-version-specific-runtime-libs option | |
179 | # is selected. | |
180 | toolexecdir='$(libdir)/gcc/$(target_noncanonical)' | |
181 | toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)' | |
182 | ;; | |
183 | no) | |
184 | if test -n "$with_cross_host" && | |
185 | test x"$with_cross_host" != x"no"; then | |
186 | # Install a library built with a cross compiler in tooldir, not libdir. | |
187 | toolexecdir='$(exec_prefix)/$(target_noncanonical)' | |
e8e66971 MR |
188 | case ${with_toolexeclibdir} in |
189 | no) | |
190 | toolexeclibdir='$(toolexecdir)/lib' | |
191 | ;; | |
192 | *) | |
193 | toolexeclibdir=${with_toolexeclibdir} | |
194 | ;; | |
195 | esac | |
58c741a6 DK |
196 | else |
197 | toolexecdir='$(libdir)/gcc-lib/$(target_noncanonical)' | |
198 | toolexeclibdir='$(libdir)' | |
199 | fi | |
200 | multi_os_directory=`$CC -print-multi-os-directory` | |
201 | case $multi_os_directory in | |
202 | .) ;; # Avoid trailing /. | |
203 | *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;; | |
204 | esac | |
205 | ;; | |
206 | esac | |
207 | AC_SUBST(toolexecdir) | |
208 | AC_SUBST(toolexeclibdir) | |
209 | ||
fa958513 DJ |
210 | dnl These must be called before AM_PROG_LIBTOOL, because it may want |
211 | dnl to call AC_CHECK_PROG. | |
212 | AC_CHECK_TOOL(AR, ar) | |
213 | AC_CHECK_TOOL(LIPO, lipo, :) | |
214 | AC_CHECK_TOOL(NM, nm) | |
215 | AC_CHECK_TOOL(RANLIB, ranlib, :) | |
216 | AC_CHECK_TOOL(STRIP, strip, :) | |
217 | AC_PROG_LN_S | |
218 | ||
219 | GCC_NO_EXECUTABLES | |
220 | AC_PROG_CC | |
221 | AC_PROG_CPP_WERROR | |
222 | ||
a51a76e5 RB |
223 | AC_SYS_LARGEFILE |
224 | ||
569dc494 RO |
225 | AC_CHECK_SIZEOF([double]) |
226 | AC_CHECK_SIZEOF([long double]) | |
227 | AS_VAR_ARITH([double_type_size], [$ac_cv_sizeof_double \* 8]) | |
228 | AS_VAR_ARITH([long_double_type_size], [$ac_cv_sizeof_long_double \* 8]) | |
229 | AC_SUBST(double_type_size) | |
230 | AC_SUBST(long_double_type_size) | |
231 | ||
0e4a0def KT |
232 | AC_CHECK_HEADERS(inttypes.h stdint.h stdlib.h ftw.h \ |
233 | unistd.h sys/stat.h sys/types.h \ | |
00d79dc4 | 234 | string.h strings.h memory.h sys/auxv.h sys/mman.h) |
0e4a0def KT |
235 | AC_HEADER_STDC |
236 | ||
fa958513 DJ |
237 | # Check for decimal float support. |
238 | AC_CACHE_CHECK([whether decimal floating point is supported], [libgcc_cv_dfp], | |
ac088ba1 BRF |
239 | [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ |
240 | #include <fenv.h> | |
241 | ]], [[ | |
242 | _Decimal32 x; | |
243 | int fe_except = | |
244 | FE_INVALID|FE_DIVBYZERO|FE_OVERFLOW|FE_UNDERFLOW|FE_INEXACT; | |
245 | ]])], | |
246 | [libgcc_cv_dfp=yes], | |
fa958513 DJ |
247 | [libgcc_cv_dfp=no])]) |
248 | decimal_float=$libgcc_cv_dfp | |
249 | AC_SUBST(decimal_float) | |
250 | ||
3c39bca6 | 251 | GCC_AC_ENABLE_DECIMAL_FLOAT([$host]) |
79b87c74 | 252 | |
8d2a9e0e CF |
253 | # Check for fixed-point support. |
254 | AC_CACHE_CHECK([whether fixed-point is supported], [libgcc_cv_fixed_point], | |
22e05272 JM |
255 | [AC_COMPILE_IFELSE([AC_LANG_SOURCE([_Sat _Fract x;])], |
256 | [libgcc_cv_fixed_point=yes], | |
8d2a9e0e CF |
257 | [libgcc_cv_fixed_point=no])]) |
258 | fixed_point=$libgcc_cv_fixed_point | |
259 | AC_SUBST(fixed_point) | |
ff473280 | 260 | |
201cdb74 RO |
261 | # For platforms with the unwind ABI which includes an unwind library, |
262 | # libunwind, we can choose to use the system libunwind. | |
263 | # config.gcc also contains tests of with_system_libunwind. | |
264 | GCC_CHECK_UNWIND_GETIPINFO | |
265 | ||
9b92a9f3 EB |
266 | # Check if the compiler is configured for setjmp/longjmp exceptions. |
267 | GCC_CHECK_SJLJ_EXCEPTIONS | |
b040f2be | 268 | |
1ecae1fc IT |
269 | GCC_CET_FLAGS(CET_FLAGS) |
270 | AC_SUBST(CET_FLAGS) | |
271 | ||
598a1586 HPN |
272 | AC_ARG_ENABLE([explicit-exception-frame-registration], |
273 | [AC_HELP_STRING([--enable-explicit-exception-frame-registration], | |
274 | [register exception tables explicitly at module start, for use | |
275 | e.g. for compatibility with installations without PT_GNU_EH_FRAME support])], | |
276 | [ | |
277 | force_explicit_eh_registry= | |
278 | if test "$enable_explicit_exception_frame_registration" = yes; then | |
9b92a9f3 EB |
279 | if test $ac_cv_sjlj_exceptions = yes; then |
280 | AC_MSG_ERROR([Can't --enable-explicit-exception-frame-registration | |
281 | with setjmp/longjmp exceptions]) | |
598a1586 HPN |
282 | fi |
283 | force_explicit_eh_registry=-DUSE_EH_FRAME_REGISTRY_ALWAYS | |
284 | fi | |
285 | ]) | |
286 | AC_SUBST([force_explicit_eh_registry]) | |
287 | ||
5a460280 ID |
288 | AC_ARG_ENABLE([tm-clone-registry], |
289 | [ --disable-tm-clone-registry disable TM clone registry], | |
290 | [ | |
291 | use_tm_clone_registry= | |
292 | if test "$enable_tm_clone_registry" = no; then | |
293 | use_tm_clone_registry=-DUSE_TM_CLONE_REGISTRY=0 | |
294 | fi | |
e8aa9f55 JL |
295 | ], |
296 | [ | |
297 | use_tm_clone_registry= | |
298 | case $target in | |
299 | msp430*elfbare) | |
300 | use_tm_clone_registry=-DUSE_TM_CLONE_REGISTRY=0 | |
301 | ;; | |
302 | esac | |
5a460280 ID |
303 | ]) |
304 | AC_SUBST([use_tm_clone_registry]) | |
305 | ||
ca24c5ad RO |
306 | AC_LIB_PROG_LD_GNU |
307 | ||
ee33b5f0 RO |
308 | AC_MSG_CHECKING([for thread model used by GCC]) |
309 | target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'` | |
310 | AC_MSG_RESULT([$target_thread_file]) | |
311 | ||
b6110d6d ILT |
312 | # Check for assembler CFI support. |
313 | AC_CACHE_CHECK([whether assembler supports CFI directives], [libgcc_cv_cfi], | |
6dace308 | 314 | [AC_COMPILE_IFELSE( |
22e05272 | 315 | [AC_LANG_SOURCE([asm("\n\ |
6dace308 ILT |
316 | .text\n\ |
317 | .cfi_startproc\n\ | |
318 | .cfi_personality 0, symbol\n\ | |
22e05272 | 319 | .cfi_endproc");])], |
6dace308 ILT |
320 | [libgcc_cv_cfi=yes], |
321 | [libgcc_cv_cfi=no])]) | |
b6110d6d | 322 | |
1ea0a651 RS |
323 | # Check 32bit or 64bit. In the case of MIPS, this really determines the |
324 | # word size rather than the address size. | |
1bb6f778 | 325 | cat > conftest.c <<EOF |
1ea0a651 | 326 | #if defined(__x86_64__) || (!defined(__i386__) && defined(__LP64__)) \ |
bf291a43 | 327 | || defined(__mips64) || defined(__loongarch64) |
ff473280 L |
328 | host_address=64 |
329 | #else | |
330 | host_address=32 | |
331 | #endif | |
332 | EOF | |
1bb6f778 DM |
333 | eval `${CC-cc} -E conftest.c | grep host_address=` |
334 | rm -f conftest.c | |
8d2a9e0e | 335 | |
1c51d688 RS |
336 | case ${host} in |
337 | mips*-*-*) | |
338 | AC_CACHE_CHECK([whether the target is hard-float], | |
339 | [libgcc_cv_mips_hard_float], | |
340 | [AC_COMPILE_IFELSE( | |
22e05272 | 341 | [AC_LANG_SOURCE([#ifndef __mips_hard_float |
1c51d688 | 342 | #error FOO |
22e05272 JM |
343 | #endif |
344 | ])], | |
1c51d688 RS |
345 | [libgcc_cv_mips_hard_float=yes], |
346 | [libgcc_cv_mips_hard_float=no])]) | |
347 | esac | |
348 | ||
2d110442 RO |
349 | case ${host} in |
350 | *-*-solaris2*) | |
f021f1d3 | 351 | # Check for system-provided CRTs on Solaris 11.4. |
2d110442 RO |
352 | AC_CACHE_CHECK([system-provided CRTs on Solaris], |
353 | [libgcc_cv_solaris_crts], | |
354 | [libgcc_cv_solaris_crts=no | |
355 | libgcc_sysroot="`${CC} -print-sysroot`" | |
356 | libgcc_libdir="$libgcc_sysroot/usr/lib" | |
357 | # At the time they were added, gcrt1.o became a symlink for backwards | |
358 | # compatibility on x86, while crt1.o was added on sparc, so check for that. | |
359 | case ${host} in | |
360 | i?86-*-solaris2* | x86_64-*-solaris2*) | |
361 | if test -h "$libgcc_libdir/gcrt1.o"; then libgcc_cv_solaris_crts=yes; fi | |
362 | ;; | |
363 | sparc*-*-solaris2*) | |
364 | if test -f "$libgcc_libdir/crt1.o"; then libgcc_cv_solaris_crts=yes; fi | |
365 | ;; | |
366 | esac]) | |
367 | if test $libgcc_cv_solaris_crts = yes; then | |
368 | AC_DEFINE(HAVE_SOLARIS_CRTS, 1, | |
369 | [Define if the system-provided CRTs are present on Solaris.]) | |
370 | fi | |
371 | ;; | |
372 | esac | |
373 | ||
e610393c JM |
374 | # Determine the version of glibc, if any, used on the target. |
375 | AC_MSG_CHECKING([for target glibc version]) | |
376 | AC_ARG_WITH([glibc-version], | |
377 | [AS_HELP_STRING([--with-glibc-version=M.N], | |
378 | [assume GCC used with glibc version M.N or later])], [ | |
379 | if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then | |
380 | glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'` | |
381 | glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'` | |
382 | else | |
383 | AC_MSG_ERROR([option --with-glibc-version requires a version number M.N]) | |
384 | fi], [ | |
385 | AC_COMPUTE_INT([glibc_version_major], [__GLIBC__], | |
386 | [#include <features.h>], | |
387 | [glibc_version_major=0]) | |
388 | AC_COMPUTE_INT([glibc_version_minor], [__GLIBC_MINOR__], | |
389 | [#include <features.h>], | |
390 | [glibc_version_minor=0])]) | |
391 | AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor]) | |
392 | ||
17867980 | 393 | # Determine floating-point type for powerpc*-*-linux* or vxworks7*. |
d80c2bea JM |
394 | # Single-precision-only FPRs are not a supported configuration for |
395 | # this target, so are not allowed for in this test. | |
396 | case ${host} in | |
17867980 | 397 | powerpc*-*-linux* | powerpc*-*-vxworks7*) |
d80c2bea JM |
398 | cat > conftest.c <<EOF |
399 | #ifdef __powerpc64__ | |
400 | ppc_fp_type=64 | |
401 | #elif defined _SOFT_FLOAT | |
402 | ppc_fp_type=soft | |
403 | #elif defined _SOFT_DOUBLE | |
404 | ppc_fp_type=e500v1 | |
405 | #elif defined __NO_FPRS__ | |
406 | ppc_fp_type=e500v2 | |
407 | #else | |
408 | ppc_fp_type=hard | |
409 | #endif | |
410 | EOF | |
411 | eval `${CC-cc} -E conftest.c | grep ppc_fp_type=` | |
412 | rm -f conftest.c | |
e610393c JM |
413 | # glibc 2.19 and later provide all the soft-fp functions, with proper |
414 | # interactions with <fenv.h> exception and rounding mode handling, so | |
415 | # make libgcc's versions into compat symbols if a recent enough glibc | |
416 | # version is being used. | |
417 | ppc_fp_compat= | |
418 | case ${ppc_fp_type} in | |
419 | soft|e500v1|e500v2) | |
420 | if test $glibc_version_major -gt 2 \ | |
421 | || ( test $glibc_version_major -eq 2 \ | |
422 | && test $glibc_version_minor -ge 19 ); then | |
423 | ppc_fp_compat="t-softfp-compat" | |
424 | fi | |
425 | ;; | |
426 | esac | |
d80c2bea JM |
427 | ;; |
428 | esac | |
429 | ||
a71c0334 | 430 | case ${host} in |
3787ee47 MM |
431 | # At present, we cannot turn -mfloat128 on via #pragma GCC target, so just |
432 | # check if we have VSX (ISA 2.06) support to build the software libraries, and | |
433 | # whether the assembler can handle xsaddqp for hardware support. Also check if | |
ef836167 | 434 | # a new glibc is being used so that __builtin_cpu_supports can be used. |
a71c0334 | 435 | powerpc*-*-linux*) |
7502c597 SB |
436 | saved_CFLAGS="$CFLAGS" |
437 | CFLAGS="$CFLAGS -mabi=altivec -mvsx -mfloat128" | |
35fbda43 | 438 | AC_CACHE_CHECK([for PowerPC ISA 2.06 to build __float128 libraries], |
a71c0334 MM |
439 | [libgcc_cv_powerpc_float128], |
440 | [AC_COMPILE_IFELSE( | |
22e05272 | 441 | [AC_LANG_SOURCE([vector double dadd (vector double a, vector double b) { return a + b; }])], |
a71c0334 MM |
442 | [libgcc_cv_powerpc_float128=yes], |
443 | [libgcc_cv_powerpc_float128=no])]) | |
444 | ||
7502c597 | 445 | CFLAGS="$CFLAGS -mpower9-vector -mfloat128-hardware" |
35fbda43 | 446 | AC_CACHE_CHECK([for PowerPC ISA 3.0 to build hardware __float128 libraries], |
a71c0334 MM |
447 | [libgcc_cv_powerpc_float128_hw], |
448 | [AC_COMPILE_IFELSE( | |
22e05272 | 449 | [AC_LANG_SOURCE([#include <sys/auxv.h> |
a71c0334 MM |
450 | #ifndef AT_PLATFORM |
451 | #error "AT_PLATFORM is not defined" | |
452 | #endif | |
3787ee47 MM |
453 | #ifndef __BUILTIN_CPU_SUPPORTS__ |
454 | #error "__builtin_cpu_supports is not available" | |
455 | #endif | |
7502c597 | 456 | vector unsigned char add (vector unsigned char a, vector unsigned char b) |
a71c0334 | 457 | { |
35fbda43 | 458 | vector unsigned char ret; |
a71c0334 MM |
459 | __asm__ ("xsaddqp %0,%1,%2" : "=v" (ret) : "v" (a), "v" (b)); |
460 | return ret; | |
461 | } | |
462 | void *add_resolver (void) { return (void *) add; } | |
463 | __float128 add_ifunc (__float128, __float128) | |
22e05272 | 464 | __attribute__ ((__ifunc__ ("add_resolver")));])], |
a71c0334 MM |
465 | [libgcc_cv_powerpc_float128_hw=yes], |
466 | [libgcc_cv_powerpc_float128_hw=no])]) | |
7502c597 | 467 | CFLAGS="$saved_CFLAGS" |
9090f480 CL |
468 | |
469 | saved_CFLAGS="$CFLAGS" | |
47749c43 | 470 | CFLAGS="$CFLAGS -mcpu=power10 -mfloat128-hardware" |
9090f480 | 471 | AC_CACHE_CHECK([for PowerPC ISA 3.1 to build hardware __float128 libraries], |
47749c43 | 472 | [libgcc_cv_powerpc_3_1_float128_hw], |
9090f480 CL |
473 | [AC_COMPILE_IFELSE( |
474 | [AC_LANG_SOURCE([#include <sys/auxv.h> | |
475 | #ifndef AT_PLATFORM | |
476 | #error "AT_PLATFORM is not defined" | |
477 | #endif | |
478 | #ifndef __BUILTIN_CPU_SUPPORTS__ | |
479 | #error "__builtin_cpu_supports is not available" | |
480 | #endif | |
47749c43 | 481 | vector unsigned char conv (vector unsigned char qs) |
9090f480 CL |
482 | { |
483 | vector unsigned char ret; | |
47749c43 | 484 | __asm__ ("xscvsqqp %0,%1" : "=v" (ret) : "v" (qs)); |
9090f480 CL |
485 | return ret; |
486 | } | |
47749c43 KL |
487 | void *conv_resolver (void) { return (void *) conv; } |
488 | __float128 conv_ifunc (__float128) | |
489 | __attribute__ ((__ifunc__ ("conv_resolver")));])], | |
9090f480 CL |
490 | [libgcc_cv_powerpc_3_1_float128_hw=yes], |
491 | [libgcc_cv_powerpc_3_1_float128_hw=no])]) | |
492 | CFLAGS="$saved_CFLAGS" | |
a71c0334 MM |
493 | esac |
494 | ||
fa958513 DJ |
495 | # Collect host-machine-specific information. |
496 | . ${srcdir}/config.host | |
497 | ||
85c64bbe BS |
498 | # Used for constructing correct paths for offload compilers. |
499 | accel_dir_suffix= | |
d28ad5d4 | 500 | real_host_noncanonical=${host_noncanonical} |
85c64bbe BS |
501 | if test x"$enable_as_accelerator_for" != x; then |
502 | accel_dir_suffix=/accel/${target_noncanonical} | |
d28ad5d4 | 503 | real_host_noncanonical=${enable_as_accelerator_for} |
85c64bbe BS |
504 | fi |
505 | AC_SUBST(accel_dir_suffix) | |
d28ad5d4 | 506 | AC_SUBST(real_host_noncanonical) |
85c64bbe BS |
507 | |
508 | if test x"$enable_offload_targets" != x; then | |
e6861a99 | 509 | extra_parts="${extra_parts} crtoffloadbegin.o crtoffloadend.o crtoffloadtable.o" |
85c64bbe BS |
510 | fi |
511 | ||
19523300 RO |
512 | # Check if Solaris/x86 linker supports ZERO terminator unwind entries. |
513 | # This is after config.host so we can augment tmake_file. | |
514 | # Link with -nostartfiles -nodefaultlibs since neither are present while | |
515 | # building libgcc. | |
516 | case ${host} in | |
ccd1242e | 517 | i?86-*-solaris2* | x86_64-*-solaris2*) |
19523300 RO |
518 | cat > conftest.s <<EOF |
519 | .section .eh_frame,"a",@unwind | |
520 | .zero 4 | |
521 | .section .jcr,"aw",@progbits | |
522 | .zero 8 | |
523 | EOF | |
524 | if AC_TRY_COMMAND(${CC-cc} -shared -nostartfiles -nodefaultlibs -o conftest.so conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
4a8bb046 | 525 | tmake_file="${tmake_file} i386/t-crtstuff" |
19523300 RO |
526 | fi |
527 | ;; | |
528 | esac | |
529 | ||
53c6feb2 RO |
530 | # Check if Solaris linker support v2 linker mapfile syntax. |
531 | # Link with -nostartfiles -nodefaultlibs since neither are present while | |
532 | # building libgcc. | |
533 | case ${host} in | |
534 | *-*-solaris2*) | |
535 | solaris_ld_v2_maps=no | |
536 | echo 'int main(void) {return 0;}' > conftest.c | |
537 | echo '$mapfile_version 2' > conftest.map | |
538 | if AC_TRY_COMMAND([${CC-cc} -nostartfiles -nodefaultlibs -Wl,-M,conftest.map -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD]); then | |
539 | solaris_ld_v2_maps=yes | |
540 | fi | |
541 | ;; | |
542 | esac | |
543 | AC_SUBST(solaris_ld_v2_maps) | |
544 | ||
590e2636 MF |
545 | # Check if xtensa target is configured for windowed ABI and thus needs to use |
546 | # custom unwind code. | |
547 | # This is after config.host so we can augment tmake_file. | |
548 | case ${host} in | |
549 | xtensa*-*) | |
8c8eb949 MF |
550 | AC_COMPILE_IFELSE([AC_LANG_SOURCE( |
551 | [#ifdef __XTENSA_CALL0_ABI__ | |
552 | #error | |
553 | #endif | |
554 | ])], | |
555 | [tmake_file="${tmake_file} xtensa/t-windowed"]) | |
590e2636 MF |
556 | ;; |
557 | esac | |
558 | ||
fa958513 DJ |
559 | # Check for visibility support. This is after config.host so that |
560 | # we can check for asm_hidden_op. | |
561 | AC_CACHE_CHECK([for __attribute__((visibility("hidden")))], | |
562 | libgcc_cv_hidden_visibility_attribute, [ | |
563 | echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1; }' > conftest.c | |
564 | libgcc_cv_hidden_visibility_attribute=no | |
565 | if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
566 | if grep "\\$asm_hidden_op.*foo" conftest.s >/dev/null; then | |
567 | libgcc_cv_hidden_visibility_attribute=yes | |
568 | fi | |
569 | fi | |
570 | rm -f conftest.* | |
571 | ]) | |
572 | ||
573 | if test $libgcc_cv_hidden_visibility_attribute = yes; then | |
574 | vis_hide='-fvisibility=hidden -DHIDE_EXPORTS' | |
ce579a4f | 575 | AC_DEFINE_UNQUOTED(AS_HIDDEN_DIRECTIVE, $asm_hidden_op, [Define to the .hidden-like directive if it exists.]) |
fa958513 DJ |
576 | else |
577 | vis_hide= | |
578 | fi | |
579 | AC_SUBST(vis_hide) | |
580 | ||
ce579a4f JJ |
581 | # Check for .cfi_sections .debug_frame support. |
582 | AC_CACHE_CHECK([for .cfi_sections .debug_frame], | |
583 | libgcc_cv_cfi_sections_directive, [ | |
584 | echo 'int foo (int, char *);' > conftest.c | |
585 | echo 'int bar (int x) { char *y = __builtin_alloca (x); return foo (x + 1, y) + 1; }' >> conftest.c | |
586 | libgcc_cv_cfi_sections_directive=no | |
587 | if AC_TRY_COMMAND(${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 | |
588 | if grep "\\.cfi_sections.*\\.debug_frame" conftest.s >/dev/null; then | |
589 | libgcc_cv_cfi_sections_directive=yes | |
590 | fi | |
591 | fi | |
592 | rm -f conftest.* | |
593 | ]) | |
594 | if test $libgcc_cv_cfi_sections_directive = yes; then | |
595 | AC_DEFINE(HAVE_AS_CFI_SECTIONS, 1, [Define to 1 if the assembler supports .cfi_sections .debug_frame directive.]) | |
596 | fi | |
597 | ||
6f461e76 | 598 | # See if we have thread-local storage. We can only test assembler |
d8c9d391 | 599 | # since link-time and run-time tests require the newly built |
6f461e76 L |
600 | # gcc, which can't be used to build executable due to that libgcc |
601 | # is yet to be built here. | |
602 | GCC_CHECK_CC_TLS | |
22867d02 | 603 | set_have_cc_tls= |
b4e9c2c6 | 604 | if test "$enable_tls $gcc_cv_have_cc_tls" = "yes yes"; then |
6f461e76 L |
605 | set_have_cc_tls="-DHAVE_CC_TLS" |
606 | fi | |
607 | AC_SUBST(set_have_cc_tls) | |
608 | ||
368fabd5 JH |
609 | # See if we have emulated thread-local storage. |
610 | GCC_CHECK_EMUTLS | |
611 | set_use_emutls= | |
612 | if test "$enable_tls $gcc_cv_use_emutls" = "yes yes"; then | |
613 | set_use_emutls="-DUSE_EMUTLS" | |
614 | fi | |
615 | AC_SUBST(set_use_emutls) | |
616 | ||
89762a83 DS |
617 | dnl Check if as supports AVX instructions. |
618 | AC_DEFUN([LIBGCC_CHECK_AS_AVX], [ | |
619 | case "${target}" in | |
620 | i[[34567]]86-*-* | x86_64-*-*) | |
621 | AC_CACHE_CHECK([if the assembler supports AVX], libgcc_cv_as_avx, [ | |
622 | AC_TRY_COMPILE([], [asm("vzeroupper");], | |
623 | [libgcc_cv_as_avx=yes], [libgcc_cv_as_avx=no]) | |
624 | ]) | |
625 | if test x$libgcc_cv_as_avx = xyes; then | |
626 | AC_DEFINE(HAVE_AS_AVX, 1, [Define to 1 if the assembler supports AVX.]) | |
627 | fi | |
628 | ;; | |
629 | esac]) | |
630 | LIBGCC_CHECK_AS_AVX | |
631 | ||
5b2f76e3 JJ |
632 | dnl Check if as supports LSE instructions. |
633 | AC_DEFUN([LIBGCC_CHECK_AS_LSE], [ | |
634 | case "${target}" in | |
635 | aarch64*-*-*) | |
636 | AC_CACHE_CHECK([if the assembler supports LSE], libgcc_cv_as_lse, [ | |
637 | AC_TRY_COMPILE([], | |
638 | changequote(,)dnl | |
639 | asm(".arch armv8-a+lse\n\tcas w0, w1, [x2]"); | |
640 | changequote([,])dnl | |
641 | , | |
642 | [libgcc_cv_as_lse=yes], [libgcc_cv_as_lse=no]) | |
643 | ]) | |
644 | if test x$libgcc_cv_as_lse = xyes; then | |
645 | AC_DEFINE(HAVE_AS_LSE, 1, [Define to 1 if the assembler supports LSE.]) | |
646 | fi | |
647 | ;; | |
648 | esac]) | |
649 | LIBGCC_CHECK_AS_LSE | |
650 | ||
89762a83 | 651 | dnl Check if as supports RTM instructions. |
aca06c90 RO |
652 | AC_CACHE_CHECK(for init priority support, libgcc_cv_init_priority, [ |
653 | AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, | |
654 | [[void ip (void) __attribute__ ((constructor (1)));]])], | |
655 | [libgcc_cv_init_priority=yes],[libgcc_cv_init_priority=no])]) | |
656 | if test $libgcc_cv_init_priority = yes; then | |
657 | AC_DEFINE(HAVE_INIT_PRIORITY, 1, | |
658 | [Define if the compiler supports init priority.]) | |
659 | fi | |
660 | ||
aca0b0b3 RO |
661 | # Conditionalize the sfp-machine.h header for this target machine. |
662 | if test -z "${sfp_machine_header}"; then | |
663 | sfp_machine_header=$cpu_type/sfp-machine.h | |
664 | if test -f ${srcdir}/config/${sfp_machine_header}; then | |
665 | : | |
666 | else | |
667 | sfp_machine_header=no-sfp-machine.h | |
668 | fi | |
669 | fi | |
670 | AC_SUBST(sfp_machine_header) | |
671 | ||
fa958513 DJ |
672 | # Conditionalize the makefile for this target machine. |
673 | tmake_file_= | |
674 | for f in ${tmake_file} | |
675 | do | |
676 | if test -f ${srcdir}/config/$f | |
677 | then | |
678 | tmake_file_="${tmake_file_} \$(srcdir)/config/$f" | |
679 | fi | |
680 | done | |
681 | tmake_file="${tmake_file_}" | |
682 | AC_SUBST(tmake_file) | |
683 | ||
852b75ed RO |
684 | # Likewise export definitions for libgcc_tm.h |
685 | tm_file_= | |
686 | for f in ${tm_file} | |
687 | do | |
688 | tm_file_="${tm_file_} \$(srcdir)/config/$f" | |
689 | done | |
690 | tm_file="${tm_file_}" | |
691 | AC_SUBST(tm_file) | |
692 | AC_SUBST(tm_defines) | |
693 | ||
5d1c8e77 | 694 | # Map from thread model to thread header. |
1183dc2c | 695 | GCC_AC_THREAD_HEADER([$target_thread_file]) |
5d1c8e77 | 696 | |
3c36aa6b JJ |
697 | # Determine what GCC version number to use in filesystem paths. |
698 | GCC_BASE_VER | |
699 | ||
fa958513 | 700 | # Substitute configuration variables |
ca24c5ad | 701 | AC_SUBST(cpu_type) |
fa958513 DJ |
702 | AC_SUBST(extra_parts) |
703 | AC_SUBST(asm_hidden_op) | |
7e02fd1b EB |
704 | AC_SUBST(enable_execute_stack) |
705 | AC_SUBST(unwind_header) | |
706 | AC_SUBST(md_unwind_header) | |
707 | AC_SUBST(sfp_machine_header) | |
708 | AC_SUBST(thread_header) | |
fa958513 DJ |
709 | |
710 | # We need multilib support. | |
711 | AC_CONFIG_FILES([Makefile]) | |
712 | AC_CONFIG_COMMANDS([default], | |
713 | [[test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h | |
714 | if test -n "$CONFIG_FILES"; then | |
715 | # FIXME: We shouldn't need to set ac_file | |
716 | ac_file=Makefile | |
717 | . ${libgcc_topdir}/config-ml.in | |
718 | fi]], | |
719 | [[srcdir=${srcdir} | |
720 | host=${host} | |
fa958513 DJ |
721 | with_target_subdir=${with_target_subdir} |
722 | with_multisubdir=${with_multisubdir} | |
723 | ac_configure_args="--enable-multilib ${ac_configure_args}" | |
724 | CONFIG_SHELL=${CONFIG_SHELL-/bin/sh} | |
725 | libgcc_topdir=${libgcc_topdir} | |
726 | CC="${CC}" | |
727 | ]]) | |
728 | AC_OUTPUT |