1 dnl On the NeXT, #including <utime.h> doesn't give you a definition for
2 dnl struct utime, unless you #define _POSIX_SOURCE.
4 AC_DEFUN(GUILE_STRUCT_UTIMBUF, [
5 AC_CACHE_CHECK([whether we need POSIX to get struct utimbuf],
6 guile_cv_struct_utimbuf_needs_posix,
15 guile_cv_struct_utimbuf_needs_posix=no,
16 guile_cv_struct_utimbuf_needs_posix=yes)])
17 if test "$guile_cv_struct_utimbuf_needs_posix" = yes; then
18 AC_DEFINE(UTIMBUF_NEEDS_POSIX)
25 dnl Apparently, at CMU they have a weird version of libc.h that is
26 dnl installed in /usr/local/include and conflicts with unistd.h.
27 dnl In these situations, we should not #include libc.h.
28 dnl This test arranges to #define LIBC_H_WITH_UNISTD_H iff libc.h is
29 dnl present on the system, and is safe to #include.
31 AC_DEFUN([GUILE_HEADER_LIBC_WITH_UNISTD],
33 AC_CHECK_HEADERS(libc.h unistd.h)
35 "whether libc.h and unistd.h can be included together",
36 guile_cv_header_libc_with_unistd,
38 if test "$ac_cv_header_libc_h" = "no"; then
39 guile_cv_header_libc_with_unistd="no"
40 elif test "$ac_cv_header_unistd_h" = "no"; then
41 guile_cv_header_libc_with_unistd="yes"
49 [guile_cv_header_libc_with_unistd=yes],
50 [guile_cv_header_libc_with_unistd=no]
55 if test "$guile_cv_header_libc_with_unistd" = yes; then
56 AC_DEFINE(LIBC_H_WITH_UNISTD_H)
63 dnl This is needed when we want to check for the same function repeatedly
64 dnl with other parameters, such as libraries, varying.
66 dnl GUILE_NAMED_CHECK_FUNC(FUNCTION, TESTNAME,
67 dnl [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
68 AC_DEFUN(GUILE_NAMED_CHECK_FUNC,
69 [AC_MSG_CHECKING([for $1])
70 AC_CACHE_VAL(ac_cv_func_$1_$2,
72 dnl Don't include <ctype.h> because on OSF/1 3.0 it includes <sys/types.h>
73 dnl which includes <sys/select.h> which contains a prototype for
74 dnl select. Similarly for bzero.
75 [/* System header to define __stub macros and hopefully few prototypes,
76 which can conflict with char $1(); below. */
78 /* Override any gcc2 internal prototype to avoid an error. */
82 /* We use char because int might match the return type of a gcc2
83 builtin and then its argument prototype would still apply. */
86 /* The GNU C library defines this for functions which it implements
87 to always fail with ENOSYS. Some functions are actually named
88 something starting with __ and the normal name is an alias. */
89 #if defined (__stub_$1) || defined (__stub___$1)
94 ], eval "ac_cv_func_$1_$2=yes", eval "ac_cv_func_$1_$2=no")])
95 if eval "test \"`echo '$ac_cv_func_'$1'_'$2`\" = yes"; then
97 ifelse([$3], , :, [$3])