You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
105 lines
2.7 KiB
105 lines
2.7 KiB
dnl Copyright (C) 1993-2003 Free Software Foundation, Inc. |
|
dnl This file is free software, distributed under the terms of the GNU |
|
dnl General Public License. As a special exception to the GNU General |
|
dnl Public License, this file may be distributed as part of a program |
|
dnl that contains a configuration script generated by Autoconf, under |
|
dnl the same distribution terms as the rest of that program. |
|
|
|
dnl From Bruno Haible, Marcus Daniels, Sam Steingold. |
|
|
|
AC_PREREQ(2.13) |
|
|
|
dnl without AC_MSG_...: with AC_MSG_... and caching: |
|
dnl AC_TRY_CPP CL_CPP_CHECK |
|
dnl AC_TRY_COMPILE CL_COMPILE_CHECK |
|
dnl AC_TRY_LINK CL_LINK_CHECK |
|
dnl AC_TRY_RUN CL_RUN_CHECK - would require cross-compiling support |
|
dnl Usage: |
|
dnl AC_TRY_CPP(INCLUDES, |
|
dnl ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]) |
|
dnl CL_CPP_CHECK(ECHO-TEXT, CACHE-ID, |
|
dnl INCLUDES, |
|
dnl ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]) |
|
dnl AC_TRY_xxx(INCLUDES, FUNCTION-BODY, |
|
dnl ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]) |
|
dnl CL_xxx_CHECK(ECHO-TEXT, CACHE-ID, |
|
dnl INCLUDES, FUNCTION-BODY, |
|
dnl ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]) |
|
|
|
AC_DEFUN([CL_CPP_CHECK], |
|
[AC_MSG_CHECKING(for $1) |
|
AC_CACHE_VAL($2,[ |
|
AC_TRY_CPP([$3], $2=yes, $2=no) |
|
]) |
|
AC_MSG_RESULT([$]$2) |
|
if test [$]$2 = yes; then |
|
ifelse([$4], , :, [$4]) |
|
ifelse([$5], , , [else |
|
$5 |
|
])dnl |
|
fi |
|
]) |
|
|
|
AC_DEFUN([CL_COMPILE_CHECK], |
|
[AC_MSG_CHECKING(for $1) |
|
AC_CACHE_VAL($2,[ |
|
AC_TRY_COMPILE([$3],[$4], $2=yes, $2=no) |
|
]) |
|
AC_MSG_RESULT([$]$2) |
|
if test [$]$2 = yes; then |
|
ifelse([$5], , :, [$5]) |
|
ifelse([$6], , , [else |
|
$6 |
|
])dnl |
|
fi |
|
]) |
|
|
|
AC_DEFUN([CL_LINK_CHECK], |
|
[AC_MSG_CHECKING(for $1) |
|
AC_CACHE_VAL($2,[ |
|
AC_TRY_LINK([$3],[$4], $2=yes, $2=no) |
|
]) |
|
AC_MSG_RESULT([$]$2) |
|
if test [$]$2 = yes; then |
|
ifelse([$5], , :, [$5]) |
|
ifelse([$6], , , [else |
|
$6 |
|
])dnl |
|
fi |
|
]) |
|
|
|
dnl CL_SILENT(ACTION) |
|
dnl performs ACTION, with AC_MSG_CHECKING and AC_MSG_RESULT being defined away. |
|
AC_DEFUN([CL_SILENT], |
|
[pushdef([AC_MSG_CHECKING],[:])dnl |
|
pushdef([AC_CHECKING],[:])dnl |
|
pushdef([AC_MSG_RESULT],[:])dnl |
|
$1[]dnl |
|
popdef([AC_MSG_RESULT])dnl |
|
popdef([AC_CHECKING])dnl |
|
popdef([AC_MSG_CHECKING])dnl |
|
]) |
|
|
|
dnl Expands to the "extern ..." prefix used for system declarations. |
|
dnl AC_LANG_EXTERN() |
|
AC_DEFUN([AC_LANG_EXTERN], |
|
[extern |
|
#ifdef __cplusplus |
|
"C" |
|
#endif |
|
]) |
|
|
|
AC_DEFUN([CL_CC_WORKS], |
|
[AC_CACHE_CHECK(whether CC works at all, cl_cv_prog_cc_works, [ |
|
AC_LANG_SAVE() |
|
AC_LANG_C() |
|
AC_TRY_RUN([int main() { exit(0); }], |
|
cl_cv_prog_cc_works=yes, cl_cv_prog_cc_works=no, |
|
AC_TRY_LINK([], [], cl_cv_prog_cc_works=yes, cl_cv_prog_cc_works=no)) |
|
AC_LANG_RESTORE() |
|
]) |
|
case "$cl_cv_prog_cc_works" in |
|
*no) echo "Installation or configuration problem: C compiler cannot create executables."; exit 1;; |
|
*yes) ;; |
|
esac |
|
])
|
|
|