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f7934be8 RM |
1 | dnl We require that everyone use exactly the same Autoconf version so that |
2 | dnl the internal functions defined and used by the main configure script | |
3 | dnl match those expected by the fragments. | |
4 | m4_define([GLIBC_AUTOCONF_VERSION], [2.68]) | |
5 | m4_if(m4_defn([AC_AUTOCONF_VERSION]), GLIBC_AUTOCONF_VERSION, [], | |
6 | [m4_fatal(m4_flatten( | |
7 | Exactly version GLIBC_AUTOCONF_VERSION of Autoconf is required but you have | |
8 | m4_defn([AC_AUTOCONF_VERSION]) | |
9 | ), [63])])dnl | |
10 | dnl | |
28f540f4 RM |
11 | dnl We define the macro GLIBC_PROVIDES to do an AC_PROVIDE for each macro |
12 | dnl which appears in configure.in before the sysdep configure scripts are run. | |
13 | dnl Each sysdep configure.in does GLIBC_PROVIDES first, to avoid any | |
14 | dnl AC_REQUIREs or AC_BEFOREs duplicating their code. | |
15 | dnl | |
3a12e572 | 16 | define([GLIBC_PROVIDES], [dnl |
9632aaee | 17 | AC_PROVIDE([AC_CONFIG_AUX_DIR_DEFAULT])dnl |
7967983f | 18 | AC_PROVIDE([AC_CONFIG_SUBDIRS])dnl |
b9cb349f | 19 | AC_PROVIDE([_AS_ECHO_N_PREPARE])dnl |
7967983f | 20 | AC_PROVIDE([_AS_ECHO_PREPARE])dnl |
2d37ce0f RM |
21 | AC_PROVIDE([_AS_CR_PREPARE])dnl |
22 | AC_PROVIDE([_AS_TR_SH_PREPARE])dnl | |
b8493de0 | 23 | AC_PROVIDE([_AS_VAR_ARITH_PREPARE])dnl |
28f540f4 | 24 | AC_PROVIDE([AC_PROG_INSTALL])dnl |
28f540f4 RM |
25 | AC_PROVIDE([AC_PROG_CC])dnl |
26 | AC_PROVIDE([AC_PROG_CPP])dnl | |
45fba3df RM |
27 | AC_PROVIDE([_AS_PATH_SEPARATOR_PREPARE])dnl |
28 | AC_PROVIDE([_AS_TEST_PREPARE])dnl | |
b8493de0 RM |
29 | AC_PROVIDE([_AS_BASENAME_PREPARE])dnl |
30 | AC_PROVIDE([_AS_ME_PREPARE])dnl | |
31 | AC_PROVIDE([_AS_LINENO_PREPARE])dnl | |
32 | AC_PROVIDE([AS_SHELL_FN_as_fn_set_status])dnl | |
33 | AC_PROVIDE([AS_SHELL_FN_as_fn_exit])dnl | |
34 | AC_PROVIDE([AS_SHELL_FN_as_fn_arith])dnl | |
35 | AC_PROVIDE([AS_SHELL_FN_ac_fn_c_try_compile])dnl | |
3a12e572 UD |
36 | define([AS_MESSAGE_LOG_FD],5)dnl |
37 | define([AS_MESSAGE_FD],6)dnl | |
52a0d149 RM |
38 | dnl Ripped out of AS_INIT, which does more cruft we do not want. |
39 | m4_wrap([m4_divert_pop([BODY])[]]) | |
40 | m4_divert_push([BODY])[]dnl | |
41 | dnl End of ripped out of AS_INIT. | |
42 | # This file is generated from configure.in by Autoconf. DO NOT EDIT! | |
b9cb349f | 43 | define([_AC_LANG], [C])dnl |
28f540f4 RM |
44 | ])dnl |
45 | dnl | |
46 | dnl Check for a symbol | |
47 | dnl | |
3a12e572 | 48 | AC_DEFUN([AC_CHECK_SYMBOL], [dnl |
28f540f4 RM |
49 | AC_MSG_CHECKING(for $1) |
50 | AC_CACHE_VAL(ac_cv_check_symbol_$1, [dnl | |
7cfb2d8b | 51 | AC_TRY_LINK(, |
28f540f4 RM |
52 | changequote(,)dnl |
53 | extern char *$1[]; puts(*$1);, | |
54 | changequote([,])dnl | |
55 | ac_cv_check_symbol_$1=yes, ac_cv_check_symbol_$1=no)]) | |
56 | if test "$ac_cv_check_symbol_$1" = yes; then | |
57 | changequote(,)dnl | |
58 | ac_tr_symbol=`echo $1 | tr '[a-z]' '[A-Z]'` | |
59 | changequote([,])dnl | |
60 | AC_DEFINE_UNQUOTED(HAVE_${ac_tr_symbol}) | |
61 | fi | |
62 | AC_MSG_RESULT($ac_cv_check_symbol_$1)])dnl | |
63 | dnl | |
ebbad4cc | 64 | |
63bda0c1 UD |
65 | dnl Locate a program and check that its version is acceptable. |
66 | dnl AC_PROG_CHECK_VER(var, namelist, version-switch, | |
4bca4c17 | 67 | dnl [version-extract-regexp], version-glob [, do-if-fail]) |
3a12e572 | 68 | AC_DEFUN([AC_CHECK_PROG_VER], |
4bca4c17 UD |
69 | [AC_CHECK_PROGS([$1], [$2]) |
70 | if test -z "[$]$1"; then | |
71 | ac_verc_fail=yes | |
63bda0c1 | 72 | else |
4bca4c17 UD |
73 | # Found it, now check the version. |
74 | AC_MSG_CHECKING([version of [$]$1]) | |
63bda0c1 | 75 | changequote(<<,>>)dnl |
4bca4c17 | 76 | ac_prog_version=`<<$>>$1 $3 2>&1 ifelse(<<$4>>,,, |
e9433893 | 77 | <<| sed -n 's/^.*patsubst(<<$4>>,/,\/).*$/\1/p'>>)` |
4bca4c17 UD |
78 | case $ac_prog_version in |
79 | '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;; | |
80 | <<$5>>) | |
63bda0c1 | 81 | changequote([,])dnl |
4bca4c17 UD |
82 | ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;; |
83 | *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;; | |
84 | ||
63bda0c1 | 85 | esac |
4bca4c17 | 86 | AC_MSG_RESULT([$ac_prog_version]) |
63bda0c1 | 87 | fi |
4bca4c17 UD |
88 | ifelse([$6],,, |
89 | [if test $ac_verc_fail = yes; then | |
90 | $6 | |
91 | fi]) | |
63bda0c1 UD |
92 | ]) |
93 | ||
ebbad4cc | 94 | dnl These modifications are to allow for an empty cross compiler tree. |
3a12e572 | 95 | define([_AC_COMPILER_EXEEXT], [EXEEXT= |
ebbad4cc | 96 | ]) |
650425ce | 97 | |
3a12e572 | 98 | AC_DEFUN([LIBC_PROG_FOO_GNU], |
650425ce UD |
99 | [# Most GNU programs take a -v and spit out some text including |
100 | # the word 'GNU'. Some try to read stdin, so give them /dev/null. | |
256705f4 | 101 | if $1 -o conftest -v </dev/null 2>&1 | grep GNU > /dev/null 2>&1; then |
650425ce UD |
102 | $2 |
103 | else | |
104 | $3 | |
256705f4 UD |
105 | fi |
106 | rm -fr contest*]) | |
650425ce | 107 | |
3a12e572 | 108 | AC_DEFUN([LIBC_PROG_BINUTILS], |
650425ce UD |
109 | [# Was a --with-binutils option given? |
110 | if test -n "$path_binutils"; then | |
111 | # Make absolute; ensure a single trailing slash. | |
112 | path_binutils=`(cd $path_binutils; pwd) | sed 's%/*$%/%'` | |
63bda0c1 | 113 | CC="$CC -B$path_binutils" |
650425ce | 114 | fi |
6916c5e1 UD |
115 | AS=`$CC -print-prog-name=as` |
116 | LD=`$CC -print-prog-name=ld` | |
5edb9387 UD |
117 | AR=`$CC -print-prog-name=ar` |
118 | AC_SUBST(AR) | |
6e3d59bc RM |
119 | OBJDUMP=`$CC -print-prog-name=objdump` |
120 | AC_SUBST(OBJDUMP) | |
1b74661a RM |
121 | OBJCOPY=`$CC -print-prog-name=objcopy` |
122 | AC_SUBST(OBJCOPY) | |
5edb9387 | 123 | |
650425ce UD |
124 | # Determine whether we are using GNU binutils. |
125 | AC_CACHE_CHECK(whether $AS is GNU as, libc_cv_prog_as_gnu, | |
126 | [LIBC_PROG_FOO_GNU($AS, libc_cv_prog_as_gnu=yes, libc_cv_prog_as_gnu=no)]) | |
a5a0310d | 127 | rm -f a.out |
650425ce UD |
128 | gnu_as=$libc_cv_prog_as_gnu |
129 | ||
130 | AC_CACHE_CHECK(whether $LD is GNU ld, libc_cv_prog_ld_gnu, | |
131 | [LIBC_PROG_FOO_GNU($LD, libc_cv_prog_ld_gnu=yes, libc_cv_prog_ld_gnu=no)]) | |
63bda0c1 UD |
132 | gnu_ld=$libc_cv_prog_ld_gnu |
133 | ]) | |
07037eeb JM |
134 | |
135 | dnl Run a static link test with -nostdlib -nostartfiles. | |
136 | dnl LIBC_TRY_LINK_STATIC([code], [action-if-true], [action-if-false]) | |
137 | AC_DEFUN([LIBC_TRY_LINK_STATIC], | |
138 | [cat > conftest.c <<EOF | |
139 | int _start (void) { return 0; } | |
140 | int __start (void) { return 0; } | |
141 | $1 | |
142 | EOF | |
143 | AS_IF([AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -o conftest | |
144 | conftest.c -static -nostartfiles -nostdlib | |
145 | 1>&AS_MESSAGE_LOG_FD])], | |
146 | [$2], [$3]) | |
147 | rm -f conftest*]) | |
10a803e0 | 148 | |
40b601fb JM |
149 | dnl Test a compiler option or options with an empty input file. |
150 | dnl LIBC_TRY_CC_OPTION([options], [action-if-true], [action-if-false]) | |
151 | AC_DEFUN([LIBC_TRY_CC_OPTION], | |
152 | [AS_IF([AC_TRY_COMMAND([${CC-cc} $1 -xc /dev/null -S -o /dev/null])], | |
153 | [$2], [$3])]) | |
154 | ||
10a803e0 RM |
155 | dnl Find and source sysdeps/*/preconfigure. |
156 | dnl LIBC_PRECONFIGURE([$srcdir], [for]) | |
157 | AC_DEFUN([LIBC_PRECONFIGURE], [dnl | |
158 | if frags=`ls -d $1/sysdeps/*/preconfigure 2> /dev/null` | |
159 | then | |
160 | AC_MSG_CHECKING($2 preconfigure fragments) | |
161 | for frag in $frags; do | |
162 | name=`echo "$frag" | sed 's@/[[^/]]*[$]@@;s@^.*/@@'` | |
163 | echo $ECHO_N "$name $ECHO_C" >&AS_MESSAGE_FD | |
164 | . "$frag" | |
165 | done | |
166 | AC_MSG_RESULT() | |
167 | fi]) | |
8b748aed JM |
168 | |
169 | # These two macros are taken from GCC's config/acx.m4. | |
170 | dnl Support the --with-pkgversion configure option. | |
171 | dnl ACX_PKGVERSION(default-pkgversion) | |
172 | AC_DEFUN([ACX_PKGVERSION],[ | |
173 | AC_ARG_WITH(pkgversion, | |
174 | AS_HELP_STRING([--with-pkgversion=PKG], | |
175 | [Use PKG in the version string in place of "$1"]), | |
176 | [case "$withval" in | |
177 | yes) AC_MSG_ERROR([package version not specified]) ;; | |
178 | no) PKGVERSION= ;; | |
179 | *) PKGVERSION="($withval) " ;; | |
180 | esac], | |
181 | PKGVERSION="($1) " | |
182 | ) | |
183 | PKGVERSION_TEXI=`echo "$PKGVERSION" | sed 's/@/@@/g'` | |
184 | AC_SUBST(PKGVERSION) | |
185 | AC_SUBST(PKGVERSION_TEXI) | |
186 | ]) | |
187 | ||
188 | dnl Support the --with-bugurl configure option. | |
189 | dnl ACX_BUGURL(default-bugurl) | |
190 | AC_DEFUN([ACX_BUGURL],[ | |
191 | AC_ARG_WITH(bugurl, | |
192 | AS_HELP_STRING([--with-bugurl=URL], | |
193 | [Direct users to URL to report a bug]), | |
194 | [case "$withval" in | |
195 | yes) AC_MSG_ERROR([bug URL not specified]) ;; | |
196 | no) BUGURL= | |
197 | ;; | |
198 | *) BUGURL="$withval" | |
199 | ;; | |
200 | esac], | |
201 | BUGURL="$1" | |
202 | ) | |
203 | case ${BUGURL} in | |
204 | "") | |
205 | REPORT_BUGS_TO= | |
206 | REPORT_BUGS_TEXI= | |
207 | ;; | |
208 | *) | |
209 | REPORT_BUGS_TO="<$BUGURL>" | |
210 | REPORT_BUGS_TEXI=@uref{`echo "$BUGURL" | sed 's/@/@@/g'`} | |
211 | ;; | |
212 | esac; | |
213 | AC_SUBST(REPORT_BUGS_TO) | |
214 | AC_SUBST(REPORT_BUGS_TEXI) | |
215 | ]) | |
6bfea974 L |
216 | |
217 | dnl Check linker option support. | |
218 | dnl LIBC_LINKER_FEATURE([ld_option], [cc_option], [action-if-true], [action-if-false]) | |
219 | AC_DEFUN([LIBC_LINKER_FEATURE], | |
220 | [AC_MSG_CHECKING([for linker that supports $1]) | |
221 | libc_linker_feature=no | |
222 | if test x"$gnu_ld" = x"yes"; then | |
223 | libc_linker_check=`$LD -v --help 2>/dev/null | grep "\$1"` | |
224 | if test -n "$libc_linker_check"; then | |
225 | cat > conftest.c <<EOF | |
226 | int _start (void) { return 42; } | |
227 | EOF | |
228 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS | |
229 | $2 -nostdlib -nostartfiles | |
230 | -fPIC -shared -o conftest.so conftest.c | |
231 | 1>&AS_MESSAGE_LOG_FD]) | |
232 | then | |
233 | libc_linker_feature=yes | |
234 | fi | |
235 | rm -f conftest* | |
236 | fi | |
237 | fi | |
238 | if test $libc_linker_feature = yes; then | |
239 | $3 | |
240 | else | |
241 | $4 | |
242 | fi | |
243 | AC_MSG_RESULT($libc_linker_feature)]) | |
bef0b507 JM |
244 | |
245 | dnl Add a makefile variable, with value set from a shell string | |
246 | dnl (expanded by the shell inside double quotes), to config.make. | |
247 | dnl LIBC_CONFIG_VAR(make-variable, shell-value) | |
248 | AC_DEFUN([LIBC_CONFIG_VAR], | |
249 | [config_vars="$config_vars | |
250 | $1 = $2"]) |