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-rw-r--r--configure.in7
1 files changed, 5 insertions, 2 deletions
diff --git a/configure.in b/configure.in
index 0896edb..5c4dfac 100644
--- a/configure.in
+++ b/configure.in
@@ -4,7 +4,11 @@ AC_INIT(pthread.h)
AC_CANONICAL_HOST
AC_CONFIG_HEADER(config.h)
AC_PROG_CC
-AC_CHECK_HEADERS([signal.h],signal_h=yes,)
+
+dnl Abort here if there is no windows.h
+AC_CHECK_HEADER([windows.h],,AC_MSG_ERROR([Target system must be Win32]))
+
+AC_CHECK_HEADER([signal.h],signal_h=yes,)
if test x$signal_h = xyes
then
AC_CACHE_CHECK([for sigset_t], p32_cv_sigset_t,
@@ -16,5 +20,4 @@ then
fi
fi
-AC_CHECK_HEADERS(windows.h,,AC_MSG_WARN([Target system must be Win32]))
AC_OUTPUT(Makefile)