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252b5132 RH |
1 | dnl Process this file with autoconf to produce a configure script |
2 | ||
3 | AC_PREREQ(2.12.1) | |
4 | AC_INIT(pexecute.c) | |
5 | ||
6 | dnl We use these options to decide which functions to include. | |
7 | AC_ARG_WITH(target-subdir, | |
8 | [ --with-target-subdir=SUBDIR Configuring in a subdirectory]) | |
9 | AC_ARG_WITH(cross-host, | |
10 | [ --with-cross-host=HOST Configuring with a cross compiler]) | |
11 | AC_ARG_WITH(newlib, | |
12 | [ --with-newlib Configuring with newlib]) | |
13 | ||
14 | if test "${srcdir}" = "."; then | |
15 | if test -z "${with_target_subdir}"; then | |
16 | libiberty_topdir="${srcdir}/.." | |
17 | else | |
18 | if test "${with_target_subdir}" != "."; then | |
19 | libiberty_topdir="${srcdir}/${with_multisrctop}../.." | |
20 | else | |
21 | libiberty_topdir="${srcdir}/${with_multisrctop}.." | |
22 | fi | |
23 | fi | |
24 | else | |
25 | libiberty_topdir="${srcdir}/.." | |
26 | fi | |
27 | AC_CONFIG_AUX_DIR($libiberty_topdir) | |
28 | ||
29 | AC_CANONICAL_HOST | |
30 | ||
31 | dnl When we start using automake: | |
32 | dnl AM_INIT_AUTOMAKE(libiberty, 1.0) | |
33 | ||
34 | dnl These must be called before AM_PROG_LIBTOOL, because it may want | |
35 | dnl to call AC_CHECK_PROG. | |
36 | AC_CHECK_TOOL(AR, ar) | |
37 | AC_CHECK_TOOL(RANLIB, ranlib, :) | |
38 | ||
39 | # FIXME: We temporarily define our own version of AC_PROG_CC. This is | |
40 | # copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We | |
41 | # are probably using a cross compiler, which will not be able to fully | |
42 | # link an executable. This should really be fixed in autoconf | |
43 | # itself. | |
44 | ||
45 | AC_DEFUN(LIB_AC_PROG_CC, | |
46 | [AC_BEFORE([$0], [AC_PROG_CPP])dnl | |
47 | AC_PROVIDE([AC_PROG_CC]) | |
48 | AC_CHECK_PROG(CC, gcc, gcc) | |
49 | if test -z "$CC"; then | |
50 | AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc) | |
51 | test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH]) | |
52 | fi | |
53 | ||
54 | AC_PROG_CC_GNU | |
55 | ||
56 | if test $ac_cv_prog_gcc = yes; then | |
57 | GCC=yes | |
58 | dnl Check whether -g works, even if CFLAGS is set, in case the package | |
59 | dnl plays around with CFLAGS (such as to build both debugging and | |
60 | dnl normal versions of a library), tasteless as that idea is. | |
61 | ac_test_CFLAGS="${CFLAGS+set}" | |
62 | ac_save_CFLAGS="$CFLAGS" | |
63 | CFLAGS= | |
64 | AC_PROG_CC_G | |
65 | if test "$ac_test_CFLAGS" = set; then | |
66 | CFLAGS="$ac_save_CFLAGS" | |
67 | elif test $ac_cv_prog_cc_g = yes; then | |
68 | CFLAGS="-g -O2" | |
69 | else | |
70 | CFLAGS="-O2" | |
71 | fi | |
72 | else | |
73 | GCC= | |
74 | test "${CFLAGS+set}" = set || CFLAGS="-g" | |
75 | fi | |
76 | ]) | |
77 | ||
78 | LIB_AC_PROG_CC | |
79 | ||
80 | AC_ISC_POSIX | |
81 | ||
82 | dnl When we start using libtool: | |
83 | dnl Default to a non shared library. This may be overridden by the | |
84 | dnl configure option --enable-shared. | |
85 | dnl AM_DISABLE_SHARED | |
86 | ||
87 | dnl When we start using libtool: | |
88 | dnl AM_PROG_LIBTOOL | |
89 | ||
90 | dnl When we start using automake: | |
91 | dnl AM_CONFIG_HEADER(config.h:config.in) | |
92 | AC_CONFIG_HEADER(config.h:config.in) | |
93 | ||
94 | dnl When we start using automake: | |
95 | dnl AM_MAINTAINER_MODE | |
96 | dnl AC_EXEEXT | |
97 | ||
98 | dnl When we start using automake: | |
99 | dnl AM_PROG_INSTALL | |
100 | AC_PROG_INSTALL | |
101 | ||
102 | . ${srcdir}/config.table | |
103 | host_makefile_frag=${frag} | |
104 | AC_SUBST_FILE(host_makefile_frag) | |
105 | ||
106 | # It's OK to check for header files. Although the compiler may not be | |
107 | # able to link anything, it had better be able to at least compile | |
108 | # something. | |
33fbbfbc | 109 | AC_CHECK_HEADERS(sys/file.h sys/param.h stdlib.h string.h unistd.h strings.h sys/time.h sys/resource.h) |
252b5132 RH |
110 | AC_HEADER_SYS_WAIT |
111 | ||
112 | # This is the list of functions which libiberty will provide if they | |
113 | # are not available on the host. | |
114 | ||
115 | funcs="asprintf" | |
116 | funcs="$funcs atexit" | |
117 | funcs="$funcs basename" | |
118 | funcs="$funcs bcmp" | |
119 | funcs="$funcs bcopy" | |
120 | funcs="$funcs bzero" | |
121 | funcs="$funcs calloc" | |
122 | funcs="$funcs clock" | |
123 | funcs="$funcs getcwd" | |
124 | funcs="$funcs getpagesize" | |
125 | funcs="$funcs index" | |
126 | funcs="$funcs insque" | |
127 | funcs="$funcs memchr" | |
128 | funcs="$funcs memcmp" | |
129 | funcs="$funcs memcpy" | |
130 | funcs="$funcs memmove" | |
131 | funcs="$funcs memset" | |
132 | funcs="$funcs mkstemps" | |
133 | funcs="$funcs random" | |
134 | funcs="$funcs rename" | |
135 | funcs="$funcs rindex" | |
136 | funcs="$funcs sigsetmask" | |
137 | funcs="$funcs strcasecmp" | |
138 | funcs="$funcs strchr" | |
139 | funcs="$funcs strdup" | |
140 | funcs="$funcs strncasecmp" | |
141 | funcs="$funcs strrchr" | |
142 | funcs="$funcs strstr" | |
143 | funcs="$funcs strtod" | |
144 | funcs="$funcs strtol" | |
145 | funcs="$funcs strtoul" | |
146 | funcs="$funcs tmpnam" | |
147 | funcs="$funcs vasprintf" | |
148 | funcs="$funcs vfprintf" | |
149 | funcs="$funcs vprintf" | |
150 | funcs="$funcs vsprintf" | |
151 | funcs="$funcs waitpid" | |
152 | ||
153 | # Also in the old function.def file: alloca, vfork, getopt. | |
154 | ||
155 | vars="sys_errlist sys_nerr sys_siglist" | |
156 | ||
157 | checkfuncs="getrusage on_exit psignal strerror strsignal sysconf times" | |
158 | ||
159 | # These are neither executed nor required, but they help keep | |
160 | # autoheader happy without adding a bunch of text to acconfig.h. | |
161 | if test "x" = "y"; then | |
162 | AC_CHECK_FUNCS(asprintf atexit basename bcmp bcopy bzero calloc clock getcwd) | |
163 | AC_CHECK_FUNCS(getpagesize index insque mkstemps memchr memcmp memcpy memmove) | |
164 | AC_CHECK_FUNCS(memset random rename rindex sigsetmask strcasecmp) | |
165 | AC_CHECK_FUNCS(strchr strdup strncasecmp strrchr strstr strtod strtol) | |
166 | AC_CHECK_FUNCS(strtoul tmpnam vasprintf vfprintf vprintf vsprintf waitpid) | |
167 | AC_DEFINE(HAVE_SYS_ERRLIST) | |
168 | AC_DEFINE(HAVE_SYS_NERR) | |
169 | AC_DEFINE(HAVE_SYS_SIGLIST) | |
170 | AC_CHECK_FUNCS(getrusage on_exit psignal strerror strsignal sysconf times) | |
171 | fi | |
172 | ||
173 | # For each of these functions, if the host does not provide the | |
174 | # function we want to put FN.o in LIBOBJS, and if the host does | |
175 | # provide the function, we want to define HAVE_FN in config.h. Also, | |
176 | # if the host does not provide alloca, we set ALLOCA to alloca.o | |
177 | ||
178 | setobjs= | |
179 | if test -n "${with_target_subdir}"; then | |
180 | ||
181 | # We are being configured as a target library. AC_REPLACE_FUNCS | |
182 | # may not work correctly, because the compiler may not be able to | |
183 | # link executables. Note that we may still be being configured | |
184 | # native. | |
185 | ||
186 | # If we are being configured for newlib, we know which functions | |
187 | # newlib provide and which ones we will be expected to provide. | |
188 | ||
189 | if test "x${with_newlib}" = "xyes"; then | |
190 | ALLOCA="alloca.o" | |
191 | LIBOBJS="asprintf.o basename.o insque.o random.o strdup.o vasprintf.o" | |
192 | ||
193 | for f in $funcs; do | |
194 | case "$f" in | |
195 | asprintf | basename | insque | random | strdup | vasprintf) | |
196 | ;; | |
197 | *) | |
198 | n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'` | |
199 | AC_DEFINE_UNQUOTED($n) | |
200 | ;; | |
201 | esac | |
202 | done | |
203 | ||
204 | # newlib doesnt provide any of the variables in $vars, so we | |
205 | # dont have to check them here. | |
206 | ||
207 | # Of the functions in $checkfuncs, newlib only has strerror. | |
208 | AC_DEFINE(HAVE_STRERROR) | |
209 | ||
210 | setobjs=yes | |
211 | ||
212 | fi | |
213 | fi | |
214 | ||
215 | if test -z "${setobjs}"; then | |
216 | case "${host}" in | |
217 | ||
218 | *-*-vxworks*) | |
219 | # Handle VxWorks configuration specially, since on VxWorks the | |
220 | # libraries are actually on the target board, not in the file | |
221 | # system. | |
222 | LIBOBJS="basename.o getpagesize.o insque.o random.o strcasecmp.o" | |
223 | LIBOBJS="$LIBOBJS strncasecmp.o strdup.o vfork.o waitpid.o vasprintf.o" | |
224 | for f in $funcs; do | |
225 | case "$f" in | |
226 | basename | getpagesize | insque | random | strcasecmp) | |
227 | ;; | |
228 | strncasecmp | strdup | vfork | waitpid | vasprintf) | |
229 | ;; | |
230 | *) | |
231 | n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'` | |
232 | AC_DEFINE_UNQUOTED($n) | |
233 | ;; | |
234 | esac | |
235 | done | |
236 | ||
237 | # VxWorks doesn't provide any of the variables in $vars, so we | |
238 | # don't have to check them here. | |
239 | ||
240 | # Of the functions in $checkfuncs, VxWorks only has strerror. | |
241 | AC_DEFINE(HAVE_STRERROR) | |
242 | ||
243 | setobjs=yes | |
244 | ;; | |
245 | ||
246 | esac | |
247 | fi | |
248 | ||
249 | if test -z "${setobjs}"; then | |
250 | ||
251 | case "${host}" in | |
252 | ||
253 | *-*-cygwin*) | |
254 | # The Cygwin library actually uses a couple of files from | |
255 | # libiberty when it is built. If we are building a native | |
256 | # Cygwin, and we run the tests, we will appear to have these | |
257 | # files. However, when we go on to build winsup, we will wind up | |
258 | # with a library which does not have the files, since they should | |
259 | # have come from libiberty. | |
260 | ||
261 | # We handle this by removing the functions the winsup library | |
262 | # provides from our shell variables, so that they appear to be | |
263 | # missing. | |
264 | ||
265 | funcs="`echo $funcs | sed -e 's/random//'`" | |
266 | LIBOBJS="$LIBOBJS random.o" | |
267 | vars="`echo $vars | sed -e 's/sys_siglist//'`" | |
268 | checkfuncs="`echo $checkfuncs | sed -e 's/strsignal//' -e 's/psignal//'`" | |
269 | ;; | |
270 | ||
271 | *-*-mingw32*) | |
272 | # Under mingw32, sys_nerr and sys_errlist exist, but they are | |
273 | # macros, so the test below won't find them. | |
274 | vars="`echo $vars | sed -e 's/sys_nerr//' -e 's/sys_errlist//'`" | |
275 | AC_DEFINE(HAVE_SYS_NERR) | |
276 | AC_DEFINE(HAVE_SYS_ERRLIST) | |
277 | ;; | |
278 | ||
279 | *-*-uwin*) | |
280 | # Under some versions of uwin, vfork is notoriously buggy and the test | |
281 | # can hang configure; on other versions, vfork exists just as a stub. | |
282 | # FIXME: This should be removed once vfork in uwin's runtime is fixed. | |
283 | ac_cv_func_vfork_works=no | |
284 | ;; | |
285 | ||
286 | esac | |
287 | ||
288 | # We haven't set the list of objects yet. Use the standard autoconf | |
289 | # tests. This will only work if the compiler works. | |
290 | AC_PROG_CC_WORKS | |
291 | AC_REPLACE_FUNCS($funcs) | |
292 | AC_FUNC_ALLOCA | |
293 | AC_FUNC_VFORK | |
294 | if test $ac_cv_func_vfork_works = no; then | |
295 | LIBOBJS="$LIBOBJS vfork.o" | |
296 | fi | |
297 | for v in $vars; do | |
298 | AC_MSG_CHECKING([for $v]) | |
299 | AC_CACHE_VAL(libiberty_cv_var_$v, | |
300 | [AC_TRY_LINK([int *p;], [extern int $v; p = &$v;], | |
301 | [eval "libiberty_cv_var_$v=yes"], | |
302 | [eval "libiberty_cv_var_$v=no"])]) | |
303 | if eval "test \"`echo '$libiberty_cv_var_'$v`\" = yes"; then | |
304 | AC_MSG_RESULT(yes) | |
305 | n=HAVE_`echo $v | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'` | |
306 | AC_DEFINE_UNQUOTED($n) | |
307 | else | |
308 | AC_MSG_RESULT(no) | |
309 | fi | |
310 | done | |
311 | AC_CHECK_FUNCS($checkfuncs) | |
312 | fi | |
313 | ||
314 | # Install a library built with a cross compiler in $(tooldir) rather | |
315 | # than $(libdir). | |
316 | if test -z "${with_cross_host}"; then | |
317 | INSTALL_DEST=libdir | |
318 | else | |
319 | INSTALL_DEST=tooldir | |
320 | fi | |
321 | AC_SUBST(INSTALL_DEST) | |
322 | ||
323 | # We need multilib support, but only if configuring for the target. | |
324 | AC_OUTPUT(Makefile, | |
325 | [test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h | |
326 | if test -n "$CONFIG_FILES"; then | |
327 | if test -n "${with_target_subdir}"; then | |
328 | # FIXME: We shouldn't need to set ac_file | |
329 | ac_file=Makefile | |
330 | . ${libiberty_topdir}/config-ml.in | |
331 | fi | |
332 | fi], | |
333 | srcdir=${srcdir} | |
334 | host=${host} | |
335 | target=${target} | |
336 | with_target_subdir=${with_target_subdir} | |
337 | with_multisubdir=${with_multisubdir} | |
338 | ac_configure_args="--enable-multilib ${ac_configure_args}" | |
339 | CONFIG_SHELL=${CONFIG_SHELL-/bin/sh} | |
340 | libiberty_topdir=${libiberty_topdir} | |
341 | ) |