diff options
Diffstat (limited to 'm4/ag_check_uname_syscall.m4')
| -rw-r--r-- | m4/ag_check_uname_syscall.m4 | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/m4/ag_check_uname_syscall.m4 b/m4/ag_check_uname_syscall.m4 new file mode 100644 index 0000000..b01d174 --- /dev/null +++ b/m4/ag_check_uname_syscall.m4 @@ -0,0 +1,35 @@ +# =========================================================================== +# http://autoconf-archive.cryp.to/ag_check_uname_syscall.html +# =========================================================================== +# +# SYNOPSIS +# +# AG_CHECK_UNAME_SYSCALL +# +# DESCRIPTION +# +# Check that the POSIX compliant uname(2) call works properly. +# +# LICENSE +# +# Copyright (c) 2008 Bruce Korb <bkorb@gnu.org> +# +# Copying and distribution of this file, with or without modification, are +# permitted in any medium without royalty provided the copyright notice +# and this notice are preserved. + +AC_DEFUN([AG_CHECK_UNAME_SYSCALL],[ + AC_MSG_CHECKING([whether uname(2) is POSIX]) + AC_CACHE_VAL([ag_cv_uname_syscall],[ + AC_TRY_RUN([#include <sys/utsname.h> +int main() { struct utsname unm; +return uname( &unm ); }],[ag_cv_uname_syscall=yes],[ag_cv_uname_syscall=no],[ag_cv_uname_syscall=no] + ) # end of TRY_RUN]) # end of CACHE_VAL + + AC_MSG_RESULT([$ag_cv_uname_syscall]) + if test x$ag_cv_uname_syscall = xyes + then + AC_DEFINE(HAVE_UNAME_SYSCALL, 1, + [Define this if uname(2) is POSIX]) + fi +]) # end of AC_DEFUN of AG_CHECK_UNAME_SYSCALL |