]>
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) | |
fa958513 DJ |
5 | sinclude(../config/acx.m4) |
6 | sinclude(../config/no-executables.m4) | |
ca24c5ad | 7 | sinclude(../config/lib-ld.m4) |
18c04407 | 8 | sinclude(../config/override.m4) |
f9989b51 | 9 | sinclude(../config/picflag.m4) |
3c39bca6 | 10 | sinclude(../config/dfp.m4) |
201cdb74 | 11 | sinclude(../config/unwind_ipinfo.m4) |
1183dc2c | 12 | sinclude(../config/gthr.m4) |
9b92a9f3 | 13 | sinclude(../config/sjlj.m4) |
1ecae1fc | 14 | sinclude(../config/cet.m4) |
fa958513 | 15 | |
df58e648 | 16 | AC_PREREQ(2.64) |
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 | ||
fa958513 DJ |
112 | AC_ARG_WITH(slibdir, |
113 | [ --with-slibdir=DIR shared libraries in DIR [LIBDIR]], | |
114 | slibdir="$with_slibdir", | |
d6efbf5a | 115 | if test "${version_specific_libs}" = yes; then |
fa958513 | 116 | slibdir='$(libsubdir)' |
d6efbf5a DJ |
117 | elif test -n "$with_cross_host" && test x"$with_cross_host" != x"no"; then |
118 | slibdir='$(exec_prefix)/$(host_noncanonical)/lib' | |
fa958513 DJ |
119 | else |
120 | slibdir='$(libdir)' | |
121 | fi) | |
122 | AC_SUBST(slibdir) | |
123 | ||
6efbd53f RW |
124 | # Command-line options. |
125 | # Very limited version of AC_MAINTAINER_MODE. | |
126 | AC_ARG_ENABLE([maintainer-mode], | |
127 | [AC_HELP_STRING([--enable-maintainer-mode], | |
128 | [enable make rules and dependencies not useful (and | |
129 | sometimes confusing) to the casual installer])], | |
130 | [case ${enable_maintainer_mode} in | |
131 | yes) MAINT='' ;; | |
132 | no) MAINT='#' ;; | |
133 | *) AC_MSG_ERROR([--enable-maintainer-mode must be yes or no]) ;; | |
134 | esac | |
135 | maintainer_mode=${enableval}], | |
136 | [MAINT='#']) | |
137 | AC_SUBST([MAINT])dnl | |
138 | ||
fa958513 DJ |
139 | AC_PROG_INSTALL |
140 | ||
141 | AC_PROG_AWK | |
142 | # We need awk; bail out if it's missing. | |
143 | case ${AWK} in | |
144 | "") AC_MSG_ERROR([can't build without awk, bailing out]) ;; | |
145 | esac | |
146 | ||
147 | AC_CANONICAL_HOST | |
148 | ACX_NONCANONICAL_HOST | |
58c741a6 | 149 | ACX_NONCANONICAL_TARGET |
14e8fc8b | 150 | GCC_TOPLEV_SUBDIRS |
fa958513 | 151 | |
58c741a6 DK |
152 | # Calculate toolexeclibdir |
153 | # Also toolexecdir, though it's only used in toolexeclibdir | |
154 | case ${version_specific_libs} in | |
155 | yes) | |
156 | # Need the gcc compiler version to know where to install libraries | |
157 | # and header files if --enable-version-specific-runtime-libs option | |
158 | # is selected. | |
159 | toolexecdir='$(libdir)/gcc/$(target_noncanonical)' | |
160 | toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)' | |
161 | ;; | |
162 | no) | |
163 | if test -n "$with_cross_host" && | |
164 | test x"$with_cross_host" != x"no"; then | |
165 | # Install a library built with a cross compiler in tooldir, not libdir. | |
166 | toolexecdir='$(exec_prefix)/$(target_noncanonical)' | |
167 | toolexeclibdir='$(toolexecdir)/lib' | |
168 | else | |
169 | toolexecdir='$(libdir)/gcc-lib/$(target_noncanonical)' | |
170 | toolexeclibdir='$(libdir)' | |
171 | fi | |
172 | multi_os_directory=`$CC -print-multi-os-directory` | |
173 | case $multi_os_directory in | |
174 | .) ;; # Avoid trailing /. | |
175 | *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;; | |
176 | esac | |
177 | ;; | |
178 | esac | |
179 | AC_SUBST(toolexecdir) | |
180 | AC_SUBST(toolexeclibdir) | |
181 | ||
fa958513 DJ |
182 | dnl These must be called before AM_PROG_LIBTOOL, because it may want |
183 | dnl to call AC_CHECK_PROG. | |
184 | AC_CHECK_TOOL(AR, ar) | |
185 | AC_CHECK_TOOL(LIPO, lipo, :) | |
186 | AC_CHECK_TOOL(NM, nm) | |
187 | AC_CHECK_TOOL(RANLIB, ranlib, :) | |
188 | AC_CHECK_TOOL(STRIP, strip, :) | |
189 | AC_PROG_LN_S | |
190 | ||
191 | GCC_NO_EXECUTABLES | |
192 | AC_PROG_CC | |
193 | AC_PROG_CPP_WERROR | |
194 | ||
a51a76e5 RB |
195 | AC_SYS_LARGEFILE |
196 | ||
569dc494 RO |
197 | AC_CHECK_SIZEOF([double]) |
198 | AC_CHECK_SIZEOF([long double]) | |
199 | AS_VAR_ARITH([double_type_size], [$ac_cv_sizeof_double \* 8]) | |
200 | AS_VAR_ARITH([long_double_type_size], [$ac_cv_sizeof_long_double \* 8]) | |
201 | AC_SUBST(double_type_size) | |
202 | AC_SUBST(long_double_type_size) | |
203 | ||
0e4a0def KT |
204 | AC_CHECK_HEADERS(inttypes.h stdint.h stdlib.h ftw.h \ |
205 | unistd.h sys/stat.h sys/types.h \ | |
206 | string.h strings.h memory.h) | |
207 | AC_HEADER_STDC | |
208 | ||
fa958513 DJ |
209 | # Check for decimal float support. |
210 | AC_CACHE_CHECK([whether decimal floating point is supported], [libgcc_cv_dfp], | |
ac088ba1 BRF |
211 | [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ |
212 | #include <fenv.h> | |
213 | ]], [[ | |
214 | _Decimal32 x; | |
215 | int fe_except = | |
216 | FE_INVALID|FE_DIVBYZERO|FE_OVERFLOW|FE_UNDERFLOW|FE_INEXACT; | |
217 | ]])], | |
218 | [libgcc_cv_dfp=yes], | |
fa958513 DJ |
219 | [libgcc_cv_dfp=no])]) |
220 | decimal_float=$libgcc_cv_dfp | |
221 | AC_SUBST(decimal_float) | |
222 | ||
3c39bca6 | 223 | GCC_AC_ENABLE_DECIMAL_FLOAT([$host]) |
79b87c74 | 224 | |
8d2a9e0e CF |
225 | # Check for fixed-point support. |
226 | AC_CACHE_CHECK([whether fixed-point is supported], [libgcc_cv_fixed_point], | |
227 | [AC_COMPILE_IFELSE([_Sat _Fract x;], [libgcc_cv_fixed_point=yes], | |
228 | [libgcc_cv_fixed_point=no])]) | |
229 | fixed_point=$libgcc_cv_fixed_point | |
230 | AC_SUBST(fixed_point) | |
ff473280 | 231 | |
201cdb74 RO |
232 | # For platforms with the unwind ABI which includes an unwind library, |
233 | # libunwind, we can choose to use the system libunwind. | |
234 | # config.gcc also contains tests of with_system_libunwind. | |
235 | GCC_CHECK_UNWIND_GETIPINFO | |
236 | ||
9b92a9f3 EB |
237 | # Check if the compiler is configured for setjmp/longjmp exceptions. |
238 | GCC_CHECK_SJLJ_EXCEPTIONS | |
b040f2be | 239 | |
1ecae1fc IT |
240 | GCC_CET_FLAGS(CET_FLAGS) |
241 | AC_SUBST(CET_FLAGS) | |
242 | ||
598a1586 HPN |
243 | AC_ARG_ENABLE([explicit-exception-frame-registration], |
244 | [AC_HELP_STRING([--enable-explicit-exception-frame-registration], | |
245 | [register exception tables explicitly at module start, for use | |
246 | e.g. for compatibility with installations without PT_GNU_EH_FRAME support])], | |
247 | [ | |
248 | force_explicit_eh_registry= | |
249 | if test "$enable_explicit_exception_frame_registration" = yes; then | |
9b92a9f3 EB |
250 | if test $ac_cv_sjlj_exceptions = yes; then |
251 | AC_MSG_ERROR([Can't --enable-explicit-exception-frame-registration | |
252 | with setjmp/longjmp exceptions]) | |
598a1586 HPN |
253 | fi |
254 | force_explicit_eh_registry=-DUSE_EH_FRAME_REGISTRY_ALWAYS | |
255 | fi | |
256 | ]) | |
257 | AC_SUBST([force_explicit_eh_registry]) | |
258 | ||
ca24c5ad RO |
259 | AC_LIB_PROG_LD_GNU |
260 | ||
ee33b5f0 RO |
261 | AC_MSG_CHECKING([for thread model used by GCC]) |
262 | target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'` | |
263 | AC_MSG_RESULT([$target_thread_file]) | |
264 | ||
b6110d6d ILT |
265 | # Check for assembler CFI support. |
266 | AC_CACHE_CHECK([whether assembler supports CFI directives], [libgcc_cv_cfi], | |
6dace308 ILT |
267 | [AC_COMPILE_IFELSE( |
268 | [asm("\n\ | |
269 | .text\n\ | |
270 | .cfi_startproc\n\ | |
271 | .cfi_personality 0, symbol\n\ | |
272 | .cfi_endproc");], | |
273 | [libgcc_cv_cfi=yes], | |
274 | [libgcc_cv_cfi=no])]) | |
b6110d6d | 275 | |
1ea0a651 RS |
276 | # Check 32bit or 64bit. In the case of MIPS, this really determines the |
277 | # word size rather than the address size. | |
1bb6f778 | 278 | cat > conftest.c <<EOF |
1ea0a651 RS |
279 | #if defined(__x86_64__) || (!defined(__i386__) && defined(__LP64__)) \ |
280 | || defined(__mips64) | |
ff473280 L |
281 | host_address=64 |
282 | #else | |
283 | host_address=32 | |
284 | #endif | |
285 | EOF | |
1bb6f778 DM |
286 | eval `${CC-cc} -E conftest.c | grep host_address=` |
287 | rm -f conftest.c | |
8d2a9e0e | 288 | |
1c51d688 RS |
289 | case ${host} in |
290 | mips*-*-*) | |
291 | AC_CACHE_CHECK([whether the target is hard-float], | |
292 | [libgcc_cv_mips_hard_float], | |
293 | [AC_COMPILE_IFELSE( | |
294 | [#ifndef __mips_hard_float | |
295 | #error FOO | |
296 | #endif], | |
297 | [libgcc_cv_mips_hard_float=yes], | |
298 | [libgcc_cv_mips_hard_float=no])]) | |
299 | esac | |
300 | ||
2d110442 RO |
301 | case ${host} in |
302 | *-*-solaris2*) | |
f021f1d3 | 303 | # Check for system-provided CRTs on Solaris 11.4. |
2d110442 RO |
304 | AC_CACHE_CHECK([system-provided CRTs on Solaris], |
305 | [libgcc_cv_solaris_crts], | |
306 | [libgcc_cv_solaris_crts=no | |
307 | libgcc_sysroot="`${CC} -print-sysroot`" | |
308 | libgcc_libdir="$libgcc_sysroot/usr/lib" | |
309 | # At the time they were added, gcrt1.o became a symlink for backwards | |
310 | # compatibility on x86, while crt1.o was added on sparc, so check for that. | |
311 | case ${host} in | |
312 | i?86-*-solaris2* | x86_64-*-solaris2*) | |
313 | if test -h "$libgcc_libdir/gcrt1.o"; then libgcc_cv_solaris_crts=yes; fi | |
314 | ;; | |
315 | sparc*-*-solaris2*) | |
316 | if test -f "$libgcc_libdir/crt1.o"; then libgcc_cv_solaris_crts=yes; fi | |
317 | ;; | |
318 | esac]) | |
319 | if test $libgcc_cv_solaris_crts = yes; then | |
320 | AC_DEFINE(HAVE_SOLARIS_CRTS, 1, | |
321 | [Define if the system-provided CRTs are present on Solaris.]) | |
322 | fi | |
323 | ;; | |
324 | esac | |
325 | ||
e610393c JM |
326 | # Determine the version of glibc, if any, used on the target. |
327 | AC_MSG_CHECKING([for target glibc version]) | |
328 | AC_ARG_WITH([glibc-version], | |
329 | [AS_HELP_STRING([--with-glibc-version=M.N], | |
330 | [assume GCC used with glibc version M.N or later])], [ | |
331 | if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then | |
332 | glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'` | |
333 | glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'` | |
334 | else | |
335 | AC_MSG_ERROR([option --with-glibc-version requires a version number M.N]) | |
336 | fi], [ | |
337 | AC_COMPUTE_INT([glibc_version_major], [__GLIBC__], | |
338 | [#include <features.h>], | |
339 | [glibc_version_major=0]) | |
340 | AC_COMPUTE_INT([glibc_version_minor], [__GLIBC_MINOR__], | |
341 | [#include <features.h>], | |
342 | [glibc_version_minor=0])]) | |
343 | AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor]) | |
344 | ||
d80c2bea JM |
345 | # Determine floating-point type for powerpc*-*-linux*. |
346 | # Single-precision-only FPRs are not a supported configuration for | |
347 | # this target, so are not allowed for in this test. | |
348 | case ${host} in | |
349 | powerpc*-*-linux*) | |
350 | cat > conftest.c <<EOF | |
351 | #ifdef __powerpc64__ | |
352 | ppc_fp_type=64 | |
353 | #elif defined _SOFT_FLOAT | |
354 | ppc_fp_type=soft | |
355 | #elif defined _SOFT_DOUBLE | |
356 | ppc_fp_type=e500v1 | |
357 | #elif defined __NO_FPRS__ | |
358 | ppc_fp_type=e500v2 | |
359 | #else | |
360 | ppc_fp_type=hard | |
361 | #endif | |
362 | EOF | |
363 | eval `${CC-cc} -E conftest.c | grep ppc_fp_type=` | |
364 | rm -f conftest.c | |
e610393c JM |
365 | # glibc 2.19 and later provide all the soft-fp functions, with proper |
366 | # interactions with <fenv.h> exception and rounding mode handling, so | |
367 | # make libgcc's versions into compat symbols if a recent enough glibc | |
368 | # version is being used. | |
369 | ppc_fp_compat= | |
370 | case ${ppc_fp_type} in | |
371 | soft|e500v1|e500v2) | |
372 | if test $glibc_version_major -gt 2 \ | |
373 | || ( test $glibc_version_major -eq 2 \ | |
374 | && test $glibc_version_minor -ge 19 ); then | |
375 | ppc_fp_compat="t-softfp-compat" | |
376 | fi | |
377 | ;; | |
378 | esac | |
d80c2bea JM |
379 | ;; |
380 | esac | |
381 | ||
a71c0334 | 382 | case ${host} in |
3787ee47 MM |
383 | # At present, we cannot turn -mfloat128 on via #pragma GCC target, so just |
384 | # check if we have VSX (ISA 2.06) support to build the software libraries, and | |
385 | # whether the assembler can handle xsaddqp for hardware support. Also check if | |
386 | # a new glibc is being used so that __builtin_cpu_supports can be used. | |
a71c0334 | 387 | powerpc*-*-linux*) |
7502c597 SB |
388 | saved_CFLAGS="$CFLAGS" |
389 | CFLAGS="$CFLAGS -mabi=altivec -mvsx -mfloat128" | |
35fbda43 | 390 | AC_CACHE_CHECK([for PowerPC ISA 2.06 to build __float128 libraries], |
a71c0334 MM |
391 | [libgcc_cv_powerpc_float128], |
392 | [AC_COMPILE_IFELSE( | |
7502c597 | 393 | [vector double dadd (vector double a, vector double b) { return a + b; }], |
a71c0334 MM |
394 | [libgcc_cv_powerpc_float128=yes], |
395 | [libgcc_cv_powerpc_float128=no])]) | |
396 | ||
7502c597 | 397 | CFLAGS="$CFLAGS -mpower9-vector -mfloat128-hardware" |
35fbda43 | 398 | AC_CACHE_CHECK([for PowerPC ISA 3.0 to build hardware __float128 libraries], |
a71c0334 MM |
399 | [libgcc_cv_powerpc_float128_hw], |
400 | [AC_COMPILE_IFELSE( | |
7502c597 | 401 | [#include <sys/auxv.h> |
a71c0334 MM |
402 | #ifndef AT_PLATFORM |
403 | #error "AT_PLATFORM is not defined" | |
404 | #endif | |
3787ee47 MM |
405 | #ifndef __BUILTIN_CPU_SUPPORTS__ |
406 | #error "__builtin_cpu_supports is not available" | |
407 | #endif | |
7502c597 | 408 | vector unsigned char add (vector unsigned char a, vector unsigned char b) |
a71c0334 | 409 | { |
35fbda43 | 410 | vector unsigned char ret; |
a71c0334 MM |
411 | __asm__ ("xsaddqp %0,%1,%2" : "=v" (ret) : "v" (a), "v" (b)); |
412 | return ret; | |
413 | } | |
414 | void *add_resolver (void) { return (void *) add; } | |
415 | __float128 add_ifunc (__float128, __float128) | |
416 | __attribute__ ((__ifunc__ ("add_resolver")));], | |
417 | [libgcc_cv_powerpc_float128_hw=yes], | |
418 | [libgcc_cv_powerpc_float128_hw=no])]) | |
7502c597 | 419 | CFLAGS="$saved_CFLAGS" |
a71c0334 MM |
420 | esac |
421 | ||
fa958513 DJ |
422 | # Collect host-machine-specific information. |
423 | . ${srcdir}/config.host | |
424 | ||
85c64bbe BS |
425 | # Used for constructing correct paths for offload compilers. |
426 | accel_dir_suffix= | |
d28ad5d4 | 427 | real_host_noncanonical=${host_noncanonical} |
85c64bbe BS |
428 | if test x"$enable_as_accelerator_for" != x; then |
429 | accel_dir_suffix=/accel/${target_noncanonical} | |
d28ad5d4 | 430 | real_host_noncanonical=${enable_as_accelerator_for} |
85c64bbe BS |
431 | fi |
432 | AC_SUBST(accel_dir_suffix) | |
d28ad5d4 | 433 | AC_SUBST(real_host_noncanonical) |
85c64bbe BS |
434 | |
435 | if test x"$enable_offload_targets" != x; then | |
e6861a99 | 436 | extra_parts="${extra_parts} crtoffloadbegin.o crtoffloadend.o crtoffloadtable.o" |
85c64bbe BS |
437 | fi |
438 | ||
19523300 RO |
439 | # Check if Solaris/x86 linker supports ZERO terminator unwind entries. |
440 | # This is after config.host so we can augment tmake_file. | |
441 | # Link with -nostartfiles -nodefaultlibs since neither are present while | |
442 | # building libgcc. | |
443 | case ${host} in | |
fbdd5d87 | 444 | i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*) |
19523300 RO |
445 | cat > conftest.s <<EOF |
446 | .section .eh_frame,"a",@unwind | |
447 | .zero 4 | |
448 | .section .jcr,"aw",@progbits | |
449 | .zero 8 | |
450 | EOF | |
451 | if AC_TRY_COMMAND(${CC-cc} -shared -nostartfiles -nodefaultlibs -o conftest.so conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
4a8bb046 | 452 | tmake_file="${tmake_file} i386/t-crtstuff" |
19523300 RO |
453 | fi |
454 | ;; | |
455 | esac | |
456 | ||
590e2636 MF |
457 | # Check if xtensa target is configured for windowed ABI and thus needs to use |
458 | # custom unwind code. | |
459 | # This is after config.host so we can augment tmake_file. | |
460 | case ${host} in | |
461 | xtensa*-*) | |
462 | cat > conftest.c <<EOF | |
463 | #ifdef __XTENSA_CALL0_ABI__ | |
464 | #error | |
465 | #endif | |
466 | EOF | |
467 | if AC_TRY_COMMAND(${CC-cc} -E -o conftest.i conftest.c 1>&AS_MESSAGE_LOG_FD); then | |
468 | tmake_file="${tmake_file} xtensa/t-windowed" | |
469 | fi | |
470 | ;; | |
471 | esac | |
472 | ||
fa958513 DJ |
473 | # Check for visibility support. This is after config.host so that |
474 | # we can check for asm_hidden_op. | |
475 | AC_CACHE_CHECK([for __attribute__((visibility("hidden")))], | |
476 | libgcc_cv_hidden_visibility_attribute, [ | |
477 | echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1; }' > conftest.c | |
478 | libgcc_cv_hidden_visibility_attribute=no | |
479 | if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
480 | if grep "\\$asm_hidden_op.*foo" conftest.s >/dev/null; then | |
481 | libgcc_cv_hidden_visibility_attribute=yes | |
482 | fi | |
483 | fi | |
484 | rm -f conftest.* | |
485 | ]) | |
486 | ||
487 | if test $libgcc_cv_hidden_visibility_attribute = yes; then | |
488 | vis_hide='-fvisibility=hidden -DHIDE_EXPORTS' | |
ce579a4f | 489 | AC_DEFINE_UNQUOTED(AS_HIDDEN_DIRECTIVE, $asm_hidden_op, [Define to the .hidden-like directive if it exists.]) |
fa958513 DJ |
490 | else |
491 | vis_hide= | |
492 | fi | |
493 | AC_SUBST(vis_hide) | |
494 | ||
ce579a4f JJ |
495 | # Check for .cfi_sections .debug_frame support. |
496 | AC_CACHE_CHECK([for .cfi_sections .debug_frame], | |
497 | libgcc_cv_cfi_sections_directive, [ | |
498 | echo 'int foo (int, char *);' > conftest.c | |
499 | echo 'int bar (int x) { char *y = __builtin_alloca (x); return foo (x + 1, y) + 1; }' >> conftest.c | |
500 | libgcc_cv_cfi_sections_directive=no | |
501 | if AC_TRY_COMMAND(${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 | |
502 | if grep "\\.cfi_sections.*\\.debug_frame" conftest.s >/dev/null; then | |
503 | libgcc_cv_cfi_sections_directive=yes | |
504 | fi | |
505 | fi | |
506 | rm -f conftest.* | |
507 | ]) | |
508 | if test $libgcc_cv_cfi_sections_directive = yes; then | |
509 | AC_DEFINE(HAVE_AS_CFI_SECTIONS, 1, [Define to 1 if the assembler supports .cfi_sections .debug_frame directive.]) | |
510 | fi | |
511 | ||
6f461e76 | 512 | # See if we have thread-local storage. We can only test assembler |
d8c9d391 | 513 | # since link-time and run-time tests require the newly built |
6f461e76 L |
514 | # gcc, which can't be used to build executable due to that libgcc |
515 | # is yet to be built here. | |
516 | GCC_CHECK_CC_TLS | |
22867d02 | 517 | set_have_cc_tls= |
b4e9c2c6 | 518 | if test "$enable_tls $gcc_cv_have_cc_tls" = "yes yes"; then |
6f461e76 L |
519 | set_have_cc_tls="-DHAVE_CC_TLS" |
520 | fi | |
521 | AC_SUBST(set_have_cc_tls) | |
522 | ||
368fabd5 JH |
523 | # See if we have emulated thread-local storage. |
524 | GCC_CHECK_EMUTLS | |
525 | set_use_emutls= | |
526 | if test "$enable_tls $gcc_cv_use_emutls" = "yes yes"; then | |
527 | set_use_emutls="-DUSE_EMUTLS" | |
528 | fi | |
529 | AC_SUBST(set_use_emutls) | |
530 | ||
89762a83 DS |
531 | dnl Check if as supports AVX instructions. |
532 | AC_DEFUN([LIBGCC_CHECK_AS_AVX], [ | |
533 | case "${target}" in | |
534 | i[[34567]]86-*-* | x86_64-*-*) | |
535 | AC_CACHE_CHECK([if the assembler supports AVX], libgcc_cv_as_avx, [ | |
536 | AC_TRY_COMPILE([], [asm("vzeroupper");], | |
537 | [libgcc_cv_as_avx=yes], [libgcc_cv_as_avx=no]) | |
538 | ]) | |
539 | if test x$libgcc_cv_as_avx = xyes; then | |
540 | AC_DEFINE(HAVE_AS_AVX, 1, [Define to 1 if the assembler supports AVX.]) | |
541 | fi | |
542 | ;; | |
543 | esac]) | |
544 | LIBGCC_CHECK_AS_AVX | |
545 | ||
546 | dnl Check if as supports RTM instructions. | |
aca06c90 RO |
547 | AC_CACHE_CHECK(for init priority support, libgcc_cv_init_priority, [ |
548 | AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, | |
549 | [[void ip (void) __attribute__ ((constructor (1)));]])], | |
550 | [libgcc_cv_init_priority=yes],[libgcc_cv_init_priority=no])]) | |
551 | if test $libgcc_cv_init_priority = yes; then | |
552 | AC_DEFINE(HAVE_INIT_PRIORITY, 1, | |
553 | [Define if the compiler supports init priority.]) | |
554 | fi | |
555 | ||
aca0b0b3 RO |
556 | # Conditionalize the sfp-machine.h header for this target machine. |
557 | if test -z "${sfp_machine_header}"; then | |
558 | sfp_machine_header=$cpu_type/sfp-machine.h | |
559 | if test -f ${srcdir}/config/${sfp_machine_header}; then | |
560 | : | |
561 | else | |
562 | sfp_machine_header=no-sfp-machine.h | |
563 | fi | |
564 | fi | |
565 | AC_SUBST(sfp_machine_header) | |
566 | ||
fa958513 DJ |
567 | # Conditionalize the makefile for this target machine. |
568 | tmake_file_= | |
569 | for f in ${tmake_file} | |
570 | do | |
571 | if test -f ${srcdir}/config/$f | |
572 | then | |
573 | tmake_file_="${tmake_file_} \$(srcdir)/config/$f" | |
574 | fi | |
575 | done | |
576 | tmake_file="${tmake_file_}" | |
577 | AC_SUBST(tmake_file) | |
578 | ||
852b75ed RO |
579 | # Likewise export definitions for libgcc_tm.h |
580 | tm_file_= | |
581 | for f in ${tm_file} | |
582 | do | |
583 | tm_file_="${tm_file_} \$(srcdir)/config/$f" | |
584 | done | |
585 | tm_file="${tm_file_}" | |
586 | AC_SUBST(tm_file) | |
587 | AC_SUBST(tm_defines) | |
588 | ||
5d1c8e77 | 589 | # Map from thread model to thread header. |
1183dc2c | 590 | GCC_AC_THREAD_HEADER([$target_thread_file]) |
5d1c8e77 | 591 | |
3c36aa6b JJ |
592 | # Determine what GCC version number to use in filesystem paths. |
593 | GCC_BASE_VER | |
594 | ||
fa958513 | 595 | # Substitute configuration variables |
ca24c5ad | 596 | AC_SUBST(cpu_type) |
fa958513 DJ |
597 | AC_SUBST(extra_parts) |
598 | AC_SUBST(asm_hidden_op) | |
7e02fd1b EB |
599 | AC_SUBST(enable_execute_stack) |
600 | AC_SUBST(unwind_header) | |
601 | AC_SUBST(md_unwind_header) | |
602 | AC_SUBST(sfp_machine_header) | |
603 | AC_SUBST(thread_header) | |
fa958513 DJ |
604 | |
605 | # We need multilib support. | |
606 | AC_CONFIG_FILES([Makefile]) | |
607 | AC_CONFIG_COMMANDS([default], | |
608 | [[test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h | |
609 | if test -n "$CONFIG_FILES"; then | |
610 | # FIXME: We shouldn't need to set ac_file | |
611 | ac_file=Makefile | |
612 | . ${libgcc_topdir}/config-ml.in | |
613 | fi]], | |
614 | [[srcdir=${srcdir} | |
615 | host=${host} | |
fa958513 DJ |
616 | with_target_subdir=${with_target_subdir} |
617 | with_multisubdir=${with_multisubdir} | |
618 | ac_configure_args="--enable-multilib ${ac_configure_args}" | |
619 | CONFIG_SHELL=${CONFIG_SHELL-/bin/sh} | |
620 | libgcc_topdir=${libgcc_topdir} | |
621 | CC="${CC}" | |
622 | ]]) | |
623 | AC_OUTPUT |