| 1 | dnl On the NeXT, #including <utime.h> doesn't give you a definition for |
| 2 | dnl struct utime, unless you #define _POSIX_SOURCE. |
| 3 | |
| 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, |
| 7 | [AC_TRY_CPP([ |
| 8 | #ifdef __EMX__ |
| 9 | #include <sys/utime.h> |
| 10 | #else |
| 11 | #include <utime.h> |
| 12 | #endif |
| 13 | struct utime blah; |
| 14 | ], |
| 15 | guile_cv_struct_utimbuf_needs_posix=no, |
| 16 | guile_cv_struct_utimbuf_needs_posix=yes)]) |
| 17 | if test "$guile_cv_struct_utimbuf_needs_posix" = yes; then |
| 18 | AC_DEFINE(UTIMBUF_NEEDS_POSIX) |
| 19 | fi]) |
| 20 | |
| 21 | |
| 22 | |
| 23 | |
| 24 | dnl |
| 25 | dnl Apparently, at CMU they have a weird version of libc.h that is |
| 26 | dnl installed in /usr/local/include and conflicts with unistd.h. |
| 27 | dnl In these situations, we should not #include libc.h. |
| 28 | dnl This test arranges to #define LIBC_H_WITH_UNISTD_H iff libc.h is |
| 29 | dnl present on the system, and is safe to #include. |
| 30 | dnl |
| 31 | AC_DEFUN([GUILE_HEADER_LIBC_WITH_UNISTD], |
| 32 | [ |
| 33 | AC_CHECK_HEADERS(libc.h unistd.h) |
| 34 | AC_CACHE_CHECK( |
| 35 | "whether libc.h and unistd.h can be included together", |
| 36 | guile_cv_header_libc_with_unistd, |
| 37 | [ |
| 38 | if test "$ac_cv_header_libc_h" = "no"; then |
| 39 | guile_cv_header_libc_with_unistd="no" |
| 40 | elif test "$ac_cv_header_unistd_h" = "no"; then |
| 41 | guile_cv_header_libc_with_unistd="yes" |
| 42 | else |
| 43 | AC_TRY_COMPILE( |
| 44 | [ |
| 45 | # include <libc.h> |
| 46 | # include <unistd.h> |
| 47 | ], |
| 48 | [], |
| 49 | [guile_cv_header_libc_with_unistd=yes], |
| 50 | [guile_cv_header_libc_with_unistd=no] |
| 51 | ) |
| 52 | fi |
| 53 | ] |
| 54 | ) |
| 55 | if test "$guile_cv_header_libc_with_unistd" = yes; then |
| 56 | AC_DEFINE(LIBC_H_WITH_UNISTD_H) |
| 57 | fi |
| 58 | ] |
| 59 | ) |
| 60 | |
| 61 | |
| 62 | |
| 63 | dnl This is needed when we want to check for the same function repeatedly |
| 64 | dnl with other parameters, such as libraries, varying. |
| 65 | dnl |
| 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, |
| 71 | [AC_TRY_LINK( |
| 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. */ |
| 77 | #include <assert.h> |
| 78 | /* Override any gcc2 internal prototype to avoid an error. */ |
| 79 | #ifdef __cplusplus |
| 80 | extern "C" |
| 81 | #endif |
| 82 | /* We use char because int might match the return type of a gcc2 |
| 83 | builtin and then its argument prototype would still apply. */ |
| 84 | char $1(); |
| 85 | ], [ |
| 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) |
| 90 | choke me |
| 91 | #else |
| 92 | $1(); |
| 93 | #endif |
| 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 |
| 96 | AC_MSG_RESULT(yes) |
| 97 | ifelse([$3], , :, [$3]) |
| 98 | else |
| 99 | AC_MSG_RESULT(no) |
| 100 | ifelse([$4], , , [$4 |
| 101 | ])dnl |
| 102 | fi |
| 103 | ]) |