diff options
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 51 |
1 files changed, 45 insertions, 6 deletions
diff --git a/configure.in b/configure.in index 84aabbe496..2665d083df 100644 --- a/configure.in +++ b/configure.in @@ -72,6 +72,50 @@ AC_PROG_MAKE_SET # checks for UNIX variants that set C preprocessor variables AC_MINIX +AC_CHECK_SIZEOF(int) +AC_CHECK_SIZEOF(long) +AC_CHECK_SIZEOF(void*) + +AC_MSG_CHECKING(for prototypes) +AC_CACHE_VAL(rb_cv_have_prototypes, + [AC_TRY_COMPILE([int foo(int x) { return 0; }], [return foo(10);], + rb_cv_have_prototypes=yes, + rb_cv_have_prototypes=no)]) +AC_MSG_RESULT($rb_cv_have_prototypes) +if test "$rb_cv_have_prototypes" = yes; then + AC_DEFINE(HAVE_PROTOTYPES) +fi + +AC_MSG_CHECKING(for variable length prototypes and stdarg.h) +AC_CACHE_VAL(rb_cv_stdarg, + [AC_TRY_COMPILE([ +#include <stdarg.h> +int foo(int x, ...) { + va_list va; + va_start(va, x); + va_arg(va, int); + va_arg(va, char *); + va_arg(va, double); + return 0; +} +], [return foo(10, "", 3.14);], + rb_cv_stdarg=yes, + rb_cv_stdarg=no)]) +AC_MSG_RESULT($rb_cv_stdarg) +if test "$rb_cv_stdarg" = yes; then + AC_DEFINE(HAVE_STDARG_PROTOTYPES) +fi + +AC_MSG_CHECKING(for gcc attribute noreturn) +AC_CACHE_VAL(rb_cv_have_attr_noreturn, + [AC_TRY_COMPILE([void exit(int x) __attribute__ ((noreturn));], [], + rb_cv_have_attr_noreturn=yes, + rb_cv_have_attr_noreturn=no)]) +AC_MSG_RESULT($rb_cv_have_attr_noreturn) +if test "$rb_cv_have_attr_noreturn" = yes; then + AC_DEFINE(HAVE_ATTR_NORETURN) +fi + dnl Checks for libraries. case "$host_os" in nextstep*) ;; @@ -88,8 +132,7 @@ AC_HEADER_DIRENT AC_HEADER_STDC AC_CHECK_HEADERS(stdlib.h unistd.h limits.h sys/file.h sys/ioctl.h pwd.h \ sys/select.h sys/time.h sys/times.h sys/param.h sys/wait.h\ - syscall.h a.out.h string.h utime.h memory.h\ - varargs.h stdarg.h) + syscall.h a.out.h string.h utime.h memory.h) dnl Checks for typedefs, structures, and compiler characteristics. AC_TYPE_UID_T @@ -100,10 +143,6 @@ AC_STRUCT_ST_BLOCKS LIBOBJS="$save_LIBOBJS" AC_STRUCT_ST_RDEV -AC_CHECK_SIZEOF(int) -AC_CHECK_SIZEOF(long) -AC_CHECK_SIZEOF(void*) - dnl Checks for library functions. AC_TYPE_GETGROUPS AC_TYPE_SIGNAL |