From 484817a95764dc7ba83b9f16c417bd727813043a Mon Sep 17 00:00:00 2001
From: Jens Axboe <axboe@fb.com>
Date: Wed, 22 Feb 2017 09:00:06 -0700
Subject: [PATCH] configure: disable compile time asserts for !opt and
 !static_assert

If we don't have _Static_assert(), disable compile time
assertion checks if optimizations are disabled.

Signed-off-by: Jens Axboe <axboe@fb.com>
---
 compiler/compiler.h | 8 +++++++-
 configure           | 3 +++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/compiler/compiler.h b/compiler/compiler.h
index a6a74322..20df21d0 100644
--- a/compiler/compiler.h
+++ b/compiler/compiler.h
@@ -38,10 +38,12 @@
 #if defined(CONFIG_STATIC_ASSERT)
 #define compiletime_assert(condition, msg) _Static_assert(condition, msg)
 
-#else
+#elif !defined(CONFIG_DISABLE_OPTIMIZATIONS)
+
 #ifndef __compiletime_error
 #define __compiletime_error(message)
 #endif
+
 #ifndef __compiletime_error_fallback
 #define __compiletime_error_fallback(condition)	do { } while (0)
 #endif
@@ -61,6 +63,10 @@
 #define compiletime_assert(condition, msg) \
 	_compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
 
+#else
+
+#define compiletime_assert(condition, msg)	do { } while (0)
+
 #endif
 
 #endif
diff --git a/configure b/configure
index 44d215f3..15b87fac 100755
--- a/configure
+++ b/configure
@@ -2041,6 +2041,9 @@ fi
 if test "$have_bool" = "yes" ; then
   output_sym "CONFIG_HAVE_BOOL"
 fi
+if test "$disable_opt" = "yes" ; then
+  output_sym "CONFIG_DISABLE_OPTIMIZATIONS"
+fi
 
 if test "$zlib" = "no" ; then
   echo "Consider installing zlib-dev (zlib-devel), some fio features depend on it."
-- 
2.25.1