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0a35513e | 1 | # Process this file with autoreconf to produce a configure script. |
818ab71a | 2 | # Copyright (C) 2011-2016 Free Software Foundation, Inc. |
0a35513e AH |
3 | |
4 | # This program is free software; you can redistribute it and/or modify | |
5 | # it under the terms of the GNU General Public License as published by | |
6 | # the Free Software Foundation; either version 2 of the License, or | |
7 | # (at your option) any later version. | |
8 | # | |
9 | # This program is distributed in the hope that it will be useful, | |
10 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | # GNU General Public License for more details. | |
13 | # | |
14 | # You should have received a copy of the GNU General Public License | |
15 | # along with this program; if not, write to the Free Software | |
16 | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. | |
17 | ||
18 | AC_PREREQ(2.59) | |
19 | AC_INIT([GNU TM Runtime Library], 1.0,,[libitm]) | |
20 | AC_CONFIG_HEADER(config.h) | |
21 | ||
22 | # ------- | |
23 | # Options | |
24 | # ------- | |
25 | ||
26 | AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) | |
27 | LIBITM_ENABLE(version-specific-runtime-libs, no, , | |
28 | [Specify that runtime libraries should be installed in a compiler-specific directory], | |
29 | permit yes|no) | |
30 | AC_MSG_RESULT($enable_version_specific_runtime_libs) | |
31 | ||
32 | # We would like our source tree to be readonly. However when releases or | |
33 | # pre-releases are generated, the flex/bison generated files as well as the | |
34 | # various formats of manuals need to be included along with the rest of the | |
35 | # sources. Therefore we have --enable-generated-files-in-srcdir to do | |
36 | # just that. | |
37 | AC_MSG_CHECKING([for --enable-generated-files-in-srcdir]) | |
38 | LIBITM_ENABLE(generated-files-in-srcdir, no, , | |
39 | [put copies of generated files in source dir intended for creating source | |
40 | tarballs for users without texinfo bison or flex.], | |
41 | permit yes|no) | |
42 | AC_MSG_RESULT($enable_generated_files_in_srcdir) | |
43 | AM_CONDITIONAL(GENINSRC, test "$enable_generated_files_in_srcdir" = yes) | |
44 | ||
45 | ||
46 | # ------- | |
47 | # ------- | |
48 | ||
49 | # Gets build, host, target, *_vendor, *_cpu, *_os, etc. | |
50 | # | |
51 | # You will slowly go insane if you do not grok the following fact: when | |
52 | # building this library, the top-level /target/ becomes the library's /host/. | |
53 | # | |
54 | # configure then causes --target to default to --host, exactly like any | |
55 | # other package using autoconf. Therefore, 'target' and 'host' will | |
56 | # always be the same. This makes sense both for native and cross compilers | |
57 | # just think about it for a little while. :-) | |
58 | # | |
59 | # Also, if this library is being configured as part of a cross compiler, the | |
60 | # top-level configure script will pass the "real" host as $with_cross_host. | |
61 | # | |
62 | # Do not delete or change the following two lines. For why, see | |
63 | # http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html | |
64 | AC_CANONICAL_SYSTEM | |
65 | target_alias=${target_alias-$host_alias} | |
66 | ||
67 | # Sets up automake. Must come after AC_CANONICAL_SYSTEM. Each of the | |
68 | # following is magically included in AUTOMAKE_OPTIONS in each Makefile.am. | |
69 | # 1.9.0: minimum required version | |
70 | # no-define: PACKAGE and VERSION will not be #define'd in config.h (a bunch | |
71 | # of other PACKAGE_* variables will, however, and there's nothing | |
72 | # we can do about that; they come from AC_INIT). | |
c0758df9 | 73 | # no-dist: we don't want 'dist' and related rules. |
0a35513e AH |
74 | # foreign: we don't follow the normal rules for GNU packages (no COPYING |
75 | # file in the top srcdir, etc, etc), so stop complaining. | |
76 | # -Wall: turns on all automake warnings... | |
77 | # -Wno-portability: ...except this one, since GNU make is required. | |
78 | # -Wno-override: ... and this one, since we do want this in testsuite. | |
c0758df9 | 79 | AM_INIT_AUTOMAKE([1.9.0 foreign no-dist -Wall -Wno-portability -Wno-override]) |
0a35513e AH |
80 | AM_ENABLE_MULTILIB(, ..) |
81 | ||
82 | # Calculate toolexeclibdir | |
83 | # Also toolexecdir, though it's only used in toolexeclibdir | |
84 | case ${enable_version_specific_runtime_libs} in | |
85 | yes) | |
86 | # Need the gcc compiler version to know where to install libraries | |
87 | # and header files if --enable-version-specific-runtime-libs option | |
88 | # is selected. | |
89 | toolexecdir='$(libdir)/gcc/$(target_alias)' | |
90 | toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)' | |
91 | ;; | |
92 | no) | |
93 | if test -n "$with_cross_host" && | |
94 | test x"$with_cross_host" != x"no"; then | |
95 | # Install a library built with a cross compiler in tooldir, not libdir. | |
96 | toolexecdir='$(exec_prefix)/$(target_alias)' | |
97 | toolexeclibdir='$(toolexecdir)/lib' | |
98 | else | |
99 | toolexecdir='$(libdir)/gcc-lib/$(target_alias)' | |
100 | toolexeclibdir='$(libdir)' | |
101 | fi | |
102 | multi_os_directory=`$CC -print-multi-os-directory` | |
103 | case $multi_os_directory in | |
104 | .) ;; # Avoid trailing /. | |
105 | *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;; | |
106 | esac | |
107 | ;; | |
108 | esac | |
109 | AC_SUBST(toolexecdir) | |
110 | AC_SUBST(toolexeclibdir) | |
111 | ||
112 | # Check the compiler. | |
113 | # The same as in boehm-gc and libstdc++. Have to borrow it from there. | |
114 | # We must force CC to /not/ be precious variables; otherwise | |
115 | # the wrong, non-multilib-adjusted value will be used in multilibs. | |
116 | # As a side effect, we have to subst CFLAGS ourselves. | |
117 | ||
118 | m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS]) | |
119 | m4_define([_AC_ARG_VAR_PRECIOUS],[]) | |
120 | AC_PROG_CC | |
121 | AC_PROG_CXX | |
122 | AM_PROG_AS | |
123 | m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS]) | |
124 | ||
125 | AC_SUBST(CFLAGS) | |
126 | ||
127 | # In order to override CFLAGS_FOR_TARGET, all of our special flags go | |
128 | # in XCFLAGS. But we need them in CFLAGS during configury. So put them | |
129 | # in both places for now and restore CFLAGS at the end of config. | |
130 | save_CFLAGS="$CFLAGS" | |
131 | ||
132 | # Find other programs we need. | |
133 | AC_CHECK_TOOL(AR, ar) | |
134 | AC_CHECK_TOOL(NM, nm) | |
135 | AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error) | |
136 | AC_PATH_PROG(PERL, perl, perl-not-found-in-path-error) | |
137 | AC_PROG_MAKE_SET | |
138 | AC_PROG_INSTALL | |
139 | ||
140 | # See if makeinfo has been installed and is modern enough | |
141 | # that we can use it. | |
142 | ACX_CHECK_PROG_VER([MAKEINFO], [makeinfo], [--version], | |
143 | [GNU texinfo.* \([0-9][0-9.]*\)], | |
144 | [4.[4-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*]) | |
145 | AM_CONDITIONAL(BUILD_INFO, test $gcc_cv_prog_makeinfo_modern = "yes") | |
146 | ||
147 | ||
148 | # Configure libtool | |
149 | AM_PROG_LIBTOOL | |
150 | AC_SUBST(enable_shared) | |
151 | AC_SUBST(enable_static) | |
152 | ||
153 | AM_MAINTAINER_MODE | |
154 | ||
155 | # For libtool versioning info, format is CURRENT:REVISION:AGE | |
156 | libtool_VERSION=1:0:0 | |
157 | AC_SUBST(libtool_VERSION) | |
158 | ||
159 | # Check header files. | |
160 | AC_STDC_HEADERS | |
161 | AC_HEADER_TIME | |
162 | ACX_HEADER_STRING | |
0258b6e4 | 163 | AC_CHECK_HEADERS(unistd.h semaphore.h sys/time.h sys/auxv.h malloc.h) |
0a35513e AH |
164 | |
165 | GCC_HEADER_STDINT(gstdint.h) | |
166 | ||
167 | GCC_AC_FUNC_MMAP_BLACKLIST | |
168 | ||
169 | AC_C_BIGENDIAN | |
170 | # I don't like the default behaviour of WORDS_BIGENDIAN undefined for LE. | |
171 | AH_BOTTOM( | |
172 | [#ifndef WORDS_BIGENDIAN | |
173 | #define WORDS_BIGENDIAN 0 | |
174 | #endif]) | |
175 | ||
176 | # Check to see if -pthread or -lpthread is needed. Prefer the former. | |
177 | # In case the pthread.h system header is not found, this test will fail. | |
178 | XPCFLAGS="" | |
179 | CFLAGS="$CFLAGS -pthread" | |
180 | AC_LINK_IFELSE( | |
181 | [AC_LANG_PROGRAM( | |
182 | [#include <pthread.h> | |
183 | void *g(void *d) { return NULL; }], | |
184 | [pthread_t t; pthread_create(&t,NULL,g,NULL);])], | |
185 | [XPCFLAGS=" -Wc,-pthread"], | |
186 | [CFLAGS="$save_CFLAGS" LIBS="-lpthread $LIBS" | |
187 | AC_LINK_IFELSE( | |
188 | [AC_LANG_PROGRAM( | |
189 | [#include <pthread.h> | |
190 | void *g(void *d) { return NULL; }], | |
191 | [pthread_t t; pthread_create(&t,NULL,g,NULL);])], | |
192 | [], | |
193 | [AC_MSG_ERROR([Pthreads are required to build libitm])])]) | |
194 | ||
195 | # Check for functions needed. | |
0258b6e4 | 196 | AC_CHECK_FUNCS(strtoull memalign posix_memalign getauxval) |
0a35513e AH |
197 | |
198 | # Check for broken semaphore implementation on darwin. | |
199 | # sem_init returns: sem_init error: Function not implemented. | |
200 | case "$host" in | |
201 | *-darwin*) | |
202 | AC_DEFINE(HAVE_BROKEN_POSIX_SEMAPHORES, 1, | |
203 | Define if the POSIX Semaphores do not work on your system.) | |
204 | ;; | |
205 | esac | |
206 | ||
207 | GCC_LINUX_FUTEX(:) | |
208 | ||
209 | # See if we support thread-local storage. | |
210 | GCC_CHECK_TLS | |
211 | ||
9ce91011 | 212 | # See what sort of export controls are available. |
0a35513e AH |
213 | LIBITM_CHECK_ATTRIBUTE_VISIBILITY |
214 | LIBITM_CHECK_ATTRIBUTE_DLLEXPORT | |
215 | LIBITM_CHECK_ATTRIBUTE_ALIAS | |
0a35513e | 216 | |
9ce91011 RO |
217 | # Check linker hardware capability support. |
218 | LIBITM_CHECK_LINKER_HWCAP | |
219 | # If defaulting to -mavx, don't clear hwcaps. | |
220 | AC_CHECK_DECL([__AVX__], [HWCAP_LDFLAGS='']) | |
221 | ||
222 | LIBITM_ENABLE_SYMVERS | |
0a35513e AH |
223 | if test $enable_symvers = gnu; then |
224 | AC_DEFINE(LIBITM_GNU_SYMBOL_VERSIONING, 1, | |
225 | [Define to 1 if GNU symbol versioning is used for libitm.]) | |
226 | fi | |
227 | ||
4bdd090f RH |
228 | # See if we can emit unwind info in the sjlj stub. |
229 | GCC_AS_CFI_PSEUDO_OP | |
230 | ||
0a35513e AH |
231 | # Determine the proper ABI type for size_t. |
232 | LIBITM_CHECK_SIZE_T_MANGLING | |
233 | ||
234 | # Get target configury. | |
235 | . ${srcdir}/configure.tgt | |
01f3428c RH |
236 | if test -n "$UNSUPPORTED"; then |
237 | AC_MSG_ERROR([Configuration ${target} is unsupported.]) | |
238 | fi | |
239 | ||
0a35513e AH |
240 | CFLAGS="$save_CFLAGS $XCFLAGS" |
241 | ||
242 | # Check for __sync_val_compare_and_swap, but only after the target has | |
243 | # had a chance to set XCFLAGS. | |
244 | LIBITM_CHECK_SYNC_BUILTINS | |
245 | LIBITM_CHECK_64BIT_SYNC_BUILTINS | |
430616e7 | 246 | LIBITM_CHECK_AS_AVX |
07d3b5c8 | 247 | LIBITM_CHECK_AS_RTM |
0258b6e4 | 248 | LIBITM_CHECK_AS_HTM |
0a35513e | 249 | |
8cf36bb3 IS |
250 | GCC_CHECK_ELF_STYLE_WEAKREF |
251 | ||
0a35513e AH |
252 | # Cleanup and exit. |
253 | CFLAGS="$save_CFLAGS" | |
254 | AC_CACHE_SAVE | |
255 | ||
256 | # Add -Wall -Werror if we are using GCC. | |
257 | if test "x$GCC" = "xyes"; then | |
258 | XCFLAGS="$XCFLAGS -Wall -Werror" | |
259 | fi | |
260 | ||
261 | XCFLAGS="$XCFLAGS $XPCFLAGS" | |
262 | ||
263 | AC_SUBST(config_path) | |
264 | AC_SUBST(XCFLAGS) | |
265 | AC_SUBST(XLDFLAGS) | |
266 | ||
267 | if test ${multilib} = yes; then | |
268 | multilib_arg="--enable-multilib" | |
269 | else | |
270 | multilib_arg= | |
271 | fi | |
272 | ||
273 | # Set up the set of libraries that we need to link against for libitm. | |
255a9a1b | 274 | # Note that the GTM_SELF_SPECS in gcc.c will force -pthread for -fgnu-tm, |
0a35513e AH |
275 | # which will force linkage against -lpthread (or equivalent for the system). |
276 | # That's not 100% ideal, but about the best we can do easily. | |
277 | if test $enable_shared = yes; then | |
278 | link_itm="-litm %{static: $LIBS}" | |
279 | else | |
280 | link_itm="-litm $LIBS" | |
281 | fi | |
282 | AC_SUBST(link_itm) | |
283 | ||
4c868789 | 284 | AM_CONDITIONAL([ARCH_AARCH64], [test "$ARCH" = aarch64]) |
aebac0ca | 285 | AM_CONDITIONAL([ARCH_ARM], [test "$ARCH" = arm]) |
4c868789 RH |
286 | AM_CONDITIONAL([ARCH_PPC], [test "$ARCH" = powerpc -o "$ARCH" = powerpc64]) |
287 | AM_CONDITIONAL([ARCH_S390], [test "$ARCH" = s390 -o "$ARCH" = s390x]) | |
0a35513e | 288 | AM_CONDITIONAL([ARCH_X86], [test "$ARCH" = x86]) |
d4b17902 | 289 | AM_CONDITIONAL([ARCH_X86_AVX], [test "$libitm_cv_as_avx" = yes]) |
0a35513e AH |
290 | AM_CONDITIONAL([ARCH_FUTEX], [test $enable_linux_futex = yes]) |
291 | ||
292 | AC_CONFIG_FILES(Makefile testsuite/Makefile libitm.spec) | |
293 | AC_OUTPUT |