Issue #8510: Remove nested 'main' functions (causing failure) in 3 configure tests;
remove some unnecessary '#include "confdefs.h"' lines. Thanks Roumen Petrov.
diff --git a/configure.in b/configure.in
index a13b44a..adf054d 100644
--- a/configure.in
+++ b/configure.in
@@ -979,7 +979,7 @@
CC="$CC -fno-strict-aliasing"
AC_CACHE_VAL(ac_cv_no_strict_aliasing_ok,
AC_COMPILE_IFELSE(
- [AC_LANG_PROGRAM([[]], [[int main() { return 0; }]])],
+ [AC_LANG_PROGRAM([[]], [[]])],
[ac_cv_no_strict_aliasing_ok=yes],
[ac_cv_no_strict_aliasing_ok=no]))
CC="$ac_save_cc"
@@ -1150,7 +1150,7 @@
[ac_save_cc="$CC"
CC="$CC -OPT:Olimit=0"
AC_COMPILE_IFELSE(
- [AC_LANG_PROGRAM([[]], [[int main() { return 0; }]])],
+ [AC_LANG_PROGRAM([[]], [[]])],
[ac_cv_opt_olimit_ok=yes],
[ac_cv_opt_olimit_ok=no]
)
@@ -1173,7 +1173,7 @@
[ac_save_cc="$CC"
CC="$CC -Olimit 1500"
AC_COMPILE_IFELSE(
- [AC_LANG_PROGRAM([[]], [[int main() { return 0; }]])],
+ [AC_LANG_PROGRAM([[]], [[]])],
[ac_cv_olimit_ok=yes],
[ac_cv_olimit_ok=no]
)
@@ -2781,7 +2781,6 @@
AC_MSG_CHECKING(for ctermid_r)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
-#include "confdefs.h"
#include <stdio.h>
]], [[void* p = ctermid_r]])],
[AC_DEFINE(HAVE_CTERMID_R, 1, Define if you have the 'ctermid_r' function.)
@@ -2791,7 +2790,6 @@
AC_MSG_CHECKING(for flock)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
-#include "confdefs.h"
#include <sys/file.h>
]], [[void* p = flock]])],
[AC_DEFINE(HAVE_FLOCK, 1, Define if you have the 'flock' function.)
@@ -2801,7 +2799,6 @@
AC_MSG_CHECKING(for getpagesize)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
-#include "confdefs.h"
#include <unistd.h>
]], [[void* p = getpagesize]])],
[AC_DEFINE(HAVE_GETPAGESIZE, 1, Define if you have the 'getpagesize' function.)
@@ -2892,7 +2889,6 @@
AC_MSG_CHECKING(for hstrerror)
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
-#include "confdefs.h"
#include <netdb.h>
]], [[void* p = hstrerror; hstrerror(0)]])],
[AC_DEFINE(HAVE_HSTRERROR, 1, Define if you have the 'hstrerror' function.)
@@ -2902,7 +2898,6 @@
AC_MSG_CHECKING(for inet_aton)
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
-#include "confdefs.h"
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
@@ -2915,7 +2910,6 @@
AC_MSG_CHECKING(for inet_pton)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
-#include "confdefs.h"
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
@@ -2929,7 +2923,6 @@
# On some systems, setgroups is in unistd.h, on others, in grp.h
AC_MSG_CHECKING(for setgroups)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
-#include "confdefs.h"
#include <unistd.h>
#ifdef HAVE_GRP_H
#include <grp.h>