about summary refs log tree commit diff
path: root/aclocal.m4
blob: b173e9e339d7debe59ca6fe6b61c873ef23d8657 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
dnl We require that everyone use exactly the same Autoconf version so that
dnl the internal functions defined and used by the main configure script
dnl match those expected by the fragments.
m4_define([GLIBC_AUTOCONF_VERSION], [2.68])
m4_if(m4_defn([AC_AUTOCONF_VERSION]), GLIBC_AUTOCONF_VERSION, [],
      [m4_fatal(m4_flatten(
Exactly version GLIBC_AUTOCONF_VERSION of Autoconf is required but you have
m4_defn([AC_AUTOCONF_VERSION])
), [63])])dnl
dnl
dnl We define the macro GLIBC_PROVIDES to do an AC_PROVIDE for each macro
dnl which appears in configure.in before the sysdep configure scripts are run.
dnl Each sysdep configure.in does GLIBC_PROVIDES first, to avoid any
dnl AC_REQUIREs or AC_BEFOREs duplicating their code.
dnl
define([GLIBC_PROVIDES], [dnl
AC_PROVIDE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
AC_PROVIDE([AC_CONFIG_SUBDIRS])dnl
AC_PROVIDE([_AS_ECHO_N_PREPARE])dnl
AC_PROVIDE([_AS_ECHO_PREPARE])dnl
AC_PROVIDE([_AS_CR_PREPARE])dnl
AC_PROVIDE([_AS_TR_SH_PREPARE])dnl
AC_PROVIDE([_AS_VAR_ARITH_PREPARE])dnl
AC_PROVIDE([AC_PROG_INSTALL])dnl
AC_PROVIDE([AC_PROG_CC])dnl
AC_PROVIDE([AC_PROG_CPP])dnl
AC_PROVIDE([_AS_PATH_SEPARATOR_PREPARE])dnl
AC_PROVIDE([_AS_TEST_PREPARE])dnl
AC_PROVIDE([_AS_BASENAME_PREPARE])dnl
AC_PROVIDE([_AS_ME_PREPARE])dnl
AC_PROVIDE([_AS_LINENO_PREPARE])dnl
AC_PROVIDE([AS_SHELL_FN_as_fn_set_status])dnl
AC_PROVIDE([AS_SHELL_FN_as_fn_exit])dnl
AC_PROVIDE([AS_SHELL_FN_as_fn_arith])dnl
AC_PROVIDE([AS_SHELL_FN_ac_fn_c_try_compile])dnl
define([AS_MESSAGE_LOG_FD],5)dnl
define([AS_MESSAGE_FD],6)dnl
dnl Ripped out of AS_INIT, which does more cruft we do not want.
m4_wrap([m4_divert_pop([BODY])[]])
m4_divert_push([BODY])[]dnl
dnl End of ripped out of AS_INIT.
# This file is generated from configure.in by Autoconf.  DO NOT EDIT!
define([_AC_LANG], [C])dnl
])dnl
dnl
dnl Check for a symbol
dnl
AC_DEFUN([AC_CHECK_SYMBOL], [dnl
AC_MSG_CHECKING(for $1)
AC_CACHE_VAL(ac_cv_check_symbol_$1, [dnl
AC_TRY_LINK(,
changequote(,)dnl
extern char *$1[]; puts(*$1);,
changequote([,])dnl
	    ac_cv_check_symbol_$1=yes, ac_cv_check_symbol_$1=no)])
if test "$ac_cv_check_symbol_$1" = yes; then
changequote(,)dnl
  ac_tr_symbol=`echo $1 | tr '[a-z]' '[A-Z]'`
changequote([,])dnl
  AC_DEFINE_UNQUOTED(HAVE_${ac_tr_symbol})
fi
AC_MSG_RESULT($ac_cv_check_symbol_$1)])dnl
dnl

dnl Locate a program and check that its version is acceptable.
dnl AC_PROG_CHECK_VER(var, namelist, version-switch,
dnl 		      [version-extract-regexp], version-glob [, do-if-fail])
AC_DEFUN([AC_CHECK_PROG_VER],
[AC_CHECK_PROGS([$1], [$2])
if test -z "[$]$1"; then
  ac_verc_fail=yes
else
  # Found it, now check the version.
  AC_MSG_CHECKING([version of [$]$1])
changequote(<<,>>)dnl
  ac_prog_version=`<<$>>$1 $3 2>&1 ifelse(<<$4>>,,,
		   <<| sed -n 's/^.*patsubst(<<$4>>,/,\/).*$/\1/p'>>)`
  case $ac_prog_version in
    '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
    <<$5>>)
changequote([,])dnl
       ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
    *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;

  esac
  AC_MSG_RESULT([$ac_prog_version])
fi
ifelse([$6],,,
[if test $ac_verc_fail = yes; then
  $6
fi])
])

dnl These modifications are to allow for an empty cross compiler tree.
define([_AC_COMPILER_EXEEXT], [EXEEXT=
])

AC_DEFUN([LIBC_PROG_FOO_GNU],
[# Most GNU programs take a -v and spit out some text including
# the word 'GNU'.  Some try to read stdin, so give them /dev/null.
if $1 -o conftest -v </dev/null 2>&1 | grep GNU > /dev/null 2>&1; then
  $2
else
  $3
fi
rm -fr contest*])

AC_DEFUN([LIBC_PROG_BINUTILS],
[# Was a --with-binutils option given?
if test -n "$path_binutils"; then
    # Make absolute; ensure a single trailing slash.
    path_binutils=`(cd $path_binutils; pwd) | sed 's%/*$%/%'`
    CC="$CC -B$path_binutils"
fi
AS=`$CC -print-prog-name=as`
LD=`$CC -print-prog-name=ld`
AR=`$CC -print-prog-name=ar`
AC_SUBST(AR)
OBJDUMP=`$CC -print-prog-name=objdump`
AC_SUBST(OBJDUMP)
OBJCOPY=`$CC -print-prog-name=objcopy`
AC_SUBST(OBJCOPY)

# Determine whether we are using GNU binutils.
AC_CACHE_CHECK(whether $AS is GNU as, libc_cv_prog_as_gnu,
[LIBC_PROG_FOO_GNU($AS, libc_cv_prog_as_gnu=yes, libc_cv_prog_as_gnu=no)])
rm -f a.out
gnu_as=$libc_cv_prog_as_gnu

AC_CACHE_CHECK(whether $LD is GNU ld, libc_cv_prog_ld_gnu,
[LIBC_PROG_FOO_GNU($LD, libc_cv_prog_ld_gnu=yes, libc_cv_prog_ld_gnu=no)])
gnu_ld=$libc_cv_prog_ld_gnu
])

dnl Run a static link test with -nostdlib -nostartfiles.
dnl LIBC_TRY_LINK_STATIC([code], [action-if-true], [action-if-false])
AC_DEFUN([LIBC_TRY_LINK_STATIC],
[cat > conftest.c <<EOF
int _start (void) { return 0; }
int __start (void) { return 0; }
$1
EOF
AS_IF([AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -o conftest
		       conftest.c -static -nostartfiles -nostdlib
		       1>&AS_MESSAGE_LOG_FD])],
      [$2], [$3])
rm -f conftest*])

dnl Test a compiler option or options with an empty input file.
dnl LIBC_TRY_CC_OPTION([options], [action-if-true], [action-if-false])
AC_DEFUN([LIBC_TRY_CC_OPTION],
[AS_IF([AC_TRY_COMMAND([${CC-cc} $1 -xc /dev/null -S -o /dev/null])],
	[$2], [$3])])

dnl Find and source sysdeps/*/preconfigure.
dnl LIBC_PRECONFIGURE([$srcdir], [for])
AC_DEFUN([LIBC_PRECONFIGURE], [dnl
if frags=`ls -d $1/sysdeps/*/preconfigure 2> /dev/null`
then
  AC_MSG_CHECKING($2 preconfigure fragments)
  for frag in $frags; do
    name=`echo "$frag" | sed 's@/[[^/]]*[$]@@;s@^.*/@@'`
    echo $ECHO_N "$name $ECHO_C" >&AS_MESSAGE_FD
    . "$frag"
  done
  AC_MSG_RESULT()
fi])

# These two macros are taken from GCC's config/acx.m4.
dnl Support the --with-pkgversion configure option.
dnl ACX_PKGVERSION(default-pkgversion)
AC_DEFUN([ACX_PKGVERSION],[
  AC_ARG_WITH(pkgversion,
    AS_HELP_STRING([--with-pkgversion=PKG],
                   [Use PKG in the version string in place of "$1"]),
    [case "$withval" in
      yes) AC_MSG_ERROR([package version not specified]) ;;
      no)  PKGVERSION= ;;
      *)   PKGVERSION="($withval) " ;;
     esac],
    PKGVERSION="($1) "
  )
  PKGVERSION_TEXI=`echo "$PKGVERSION" | sed 's/@/@@/g'`
  AC_SUBST(PKGVERSION)
  AC_SUBST(PKGVERSION_TEXI)
])

dnl Support the --with-bugurl configure option.
dnl ACX_BUGURL(default-bugurl)
AC_DEFUN([ACX_BUGURL],[
  AC_ARG_WITH(bugurl,
    AS_HELP_STRING([--with-bugurl=URL],
                   [Direct users to URL to report a bug]),
    [case "$withval" in
      yes) AC_MSG_ERROR([bug URL not specified]) ;;
      no)  BUGURL=
	   ;;
      *)   BUGURL="$withval"
	   ;;
     esac],
     BUGURL="$1"
  )
  case ${BUGURL} in
  "")
    REPORT_BUGS_TO=
    REPORT_BUGS_TEXI=
    ;;
  *)
    REPORT_BUGS_TO="<$BUGURL>"
    REPORT_BUGS_TEXI=@uref{`echo "$BUGURL" | sed 's/@/@@/g'`}
    ;;
  esac;
  AC_SUBST(REPORT_BUGS_TO)
  AC_SUBST(REPORT_BUGS_TEXI)
])