Issue #13057: Include stdio.h when NULL is used in configure.ac.
diff --git a/configure b/configure
index 494bef9..40f37de 100755
--- a/configure
+++ b/configure
@@ -5850,6 +5850,7 @@
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
+#include <stdio.h>
#include <pthread.h>
void* routine(void* p){return NULL;}
@@ -5905,6 +5906,7 @@
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
+#include <stdio.h>
#include <pthread.h>
void* routine(void* p){return NULL;}
@@ -5954,6 +5956,7 @@
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
+#include <stdio.h>
#include <pthread.h>
void* routine(void* p){return NULL;}
@@ -6003,6 +6006,7 @@
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
+#include <stdio.h>
#include <pthread.h>
void* routine(void* p){return NULL;}
@@ -8690,6 +8694,8 @@
$as_echo_n "checking for pthread_create in -lpthread... " >&6; }
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
+
+#include <stdio.h>
#include <pthread.h>
void * start_routine (void *arg) { exit (0); }
@@ -9082,7 +9088,9 @@
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
-#include <pthread.h>
+
+ #include <stdio.h>
+ #include <pthread.h>
void *foo(void *parm) {
return NULL;
}
diff --git a/configure.ac b/configure.ac
index 3d5838e..2044027 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1233,6 +1233,7 @@
AC_MSG_CHECKING(whether pthreads are available without options)
AC_CACHE_VAL(ac_cv_pthread_is_default,
[AC_RUN_IFELSE([AC_LANG_SOURCE([[
+#include <stdio.h>
#include <pthread.h>
void* routine(void* p){return NULL;}
@@ -1267,6 +1268,7 @@
[ac_save_cc="$CC"
CC="$CC -Kpthread"
AC_RUN_IFELSE([AC_LANG_SOURCE([[
+#include <stdio.h>
#include <pthread.h>
void* routine(void* p){return NULL;}
@@ -1295,6 +1297,7 @@
[ac_save_cc="$CC"
CC="$CC -Kthread"
AC_RUN_IFELSE([AC_LANG_SOURCE([[
+#include <stdio.h>
#include <pthread.h>
void* routine(void* p){return NULL;}
@@ -1323,6 +1326,7 @@
[ac_save_cc="$CC"
CC="$CC -pthread"
AC_RUN_IFELSE([AC_LANG_SOURCE([[
+#include <stdio.h>
#include <pthread.h>
void* routine(void* p){return NULL;}
@@ -2317,7 +2321,9 @@
_libs=$LIBS
LIBS="$LIBS -lpthread"
AC_MSG_CHECKING([for pthread_create in -lpthread])
- AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <pthread.h>
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([[
+#include <stdio.h>
+#include <pthread.h>
void * start_routine (void *arg) { exit (0); }]], [[
pthread_create (NULL, NULL, start_routine, NULL)]])],[
@@ -2400,7 +2406,9 @@
AC_MSG_CHECKING(if PTHREAD_SCOPE_SYSTEM is supported)
AC_CACHE_VAL(ac_cv_pthread_system_supported,
- [AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <pthread.h>
+ [AC_RUN_IFELSE([AC_LANG_SOURCE([[
+ #include <stdio.h>
+ #include <pthread.h>
void *foo(void *parm) {
return NULL;
}