From ec8f843fa199fb6f3aa0a35929cd886c4797fd2d Mon Sep 17 00:00:00 2001
From: evpobr <evpobr@gmail.com>
Date: Thu, 24 Sep 2020 08:43:47 +0500
Subject: [PATCH] CMake: Cache clip test result

---
 cmake/ClipMode.cmake | 146 +++++++++++++++++++++----------------------
 1 file changed, 73 insertions(+), 73 deletions(-)

diff --git a/cmake/ClipMode.cmake b/cmake/ClipMode.cmake
index e47497dc..0241e037 100644
--- a/cmake/ClipMode.cmake
+++ b/cmake/ClipMode.cmake
@@ -2,91 +2,91 @@ include (CheckCSourceRuns)
 include (CMakePushCheckState)
 
 macro (CLIP_MODE)
+	if ((NOT DEFINED CPU_CLIPS_NEGATIVE) AND (NOT DEFINED CPU_CLIPS_POSITIVE))
+		set (CLIP_MODE_POSITIVE_MESSAGE "Target processor clips on positive float to int conversion")
+		set (CLIP_MODE_NEGATIVE_MESSAGE "Target processor clips on negative float to int conversion")
 
-	set (CLIP_MODE_POSITIVE_MESSAGE "Target processor clips on positive float to int conversion")
-	set (CLIP_MODE_NEGATIVE_MESSAGE "Target processor clips on negative float to int conversion")
+		message (STATUS "Checking processor clipping capabilities...")
 
-	message (STATUS "Checking processor clipping capabilities...")
+		if (CMAKE_CROSSCOMPILING)
 
-	if (CMAKE_CROSSCOMPILING)
+			set (CLIP_MSG "disabled")
+			set (CPU_CLIPS_POSITIVE FALSE CACHE BOOL ${CLIP_MODE_POSITIVE_MESSAGE})
+			set (CPU_CLIPS_NEGATIVE FALSE CACHE BOOL ${CLIP_MODE_NEGATIVE_MESSAGE})
 
-		set (CLIP_MSG "disabled")
-		set (CPU_CLIPS_POSITIVE FALSE CACHE BOOL ${CLIP_MODE_POSITIVE_MESSAGE})
-		set (CPU_CLIPS_NEGATIVE FALSE CACHE BOOL ${CLIP_MODE_NEGATIVE_MESSAGE})
+		else (NOT CMAKE_CROSSCOMPILING)
 
-	else (NOT CMAKE_CROSSCOMPILING)
-
-		cmake_push_check_state ()
-		
-		set (CMAKE_REQUIRED_QUIET TRUE)
-		if (LIBM_REQUIRED)
-			set (CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} ${M_LIBRARY})
-		endif ()
-		
-		check_c_source_runs (
-		"
-		#define	_ISOC9X_SOURCE	1
-		#define _ISOC99_SOURCE	1
-		#define	__USE_ISOC99	1
-		#define __USE_ISOC9X	1
-		#include <math.h>
-		int main (void)
-		{	double	fval ;
-			int k, ival ;
-
-			fval = 1.0 * 0x7FFFFFFF ;
-			for (k = 0 ; k < 100 ; k++)
-			{	ival = (lrint (fval)) >> 24 ;
-				if (ival != 127)
-					return 1 ;
+			cmake_push_check_state ()
 			
-				fval *= 1.2499999 ;
-				} ;
+			set (CMAKE_REQUIRED_QUIET TRUE)
+			if (LIBM_REQUIRED)
+				set (CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} ${M_LIBRARY})
+			endif ()
 			
-				return 0 ;
-			}
-		"
-		CPU_CLIPS_POSITIVE)
-		
-		check_c_source_runs (
-		"
-		#define	_ISOC9X_SOURCE	1
-		#define _ISOC99_SOURCE	1
-		#define	__USE_ISOC99	1
-		#define __USE_ISOC9X	1
-		#include <math.h>
-		int main (void)
-		{	double	fval ;
-			int k, ival ;
+			check_c_source_runs (
+			"
+			#define	_ISOC9X_SOURCE	1
+			#define _ISOC99_SOURCE	1
+			#define	__USE_ISOC99	1
+			#define __USE_ISOC9X	1
+			#include <math.h>
+			int main (void)
+			{	double	fval ;
+				int k, ival ;
 
-			fval = -8.0 * 0x10000000 ;
-			for (k = 0 ; k < 100 ; k++)
-			{	ival = (lrint (fval)) >> 24 ;
-				if (ival != -128)
-					return 1 ;
+				fval = 1.0 * 0x7FFFFFFF ;
+				for (k = 0 ; k < 100 ; k++)
+				{	ival = (lrint (fval)) >> 24 ;
+					if (ival != 127)
+						return 1 ;
+				
+					fval *= 1.2499999 ;
+					} ;
+				
+					return 0 ;
+				}
+			"
+			CPU_CLIPS_POSITIVE)
 			
-				fval *= 1.2499999 ;
-				} ;
-			
-				return 0 ;
-			}
-		"
-		CPU_CLIPS_NEGATIVE)
+			check_c_source_runs (
+			"
+			#define	_ISOC9X_SOURCE	1
+			#define _ISOC99_SOURCE	1
+			#define	__USE_ISOC99	1
+			#define __USE_ISOC9X	1
+			#include <math.h>
+			int main (void)
+			{	double	fval ;
+				int k, ival ;
 
-		cmake_pop_check_state ()
+				fval = -8.0 * 0x10000000 ;
+				for (k = 0 ; k < 100 ; k++)
+				{	ival = (lrint (fval)) >> 24 ;
+					if (ival != -128)
+						return 1 ;
+				
+					fval *= 1.2499999 ;
+					} ;
+				
+					return 0 ;
+				}
+			"
+			CPU_CLIPS_NEGATIVE)
 
-		if (CPU_CLIPS_POSITIVE AND (NOT CPU_CLIPS_NEGATIVE))
-			set (CLIP_MSG "positive")
-		elseif (CPU_CLIPS_NEGATIVE AND (NOT CPU_CLIPS_POSITIVE))
-			set (CLIP_MSG "negative")
-		elseif (CPU_CLIPS_POSITIVE AND CPU_CLIPS_NEGATIVE)
-			set (CLIP_MSG "both")
-		else ()
-			set (CLIP_MSG "none")
-		endif ()
+			cmake_pop_check_state ()
 
-	endif (CMAKE_CROSSCOMPILING)
+			if (CPU_CLIPS_POSITIVE AND (NOT CPU_CLIPS_NEGATIVE))
+				set (CLIP_MSG "positive")
+			elseif (CPU_CLIPS_NEGATIVE AND (NOT CPU_CLIPS_POSITIVE))
+				set (CLIP_MSG "negative")
+			elseif (CPU_CLIPS_POSITIVE AND CPU_CLIPS_NEGATIVE)
+				set (CLIP_MSG "both")
+			else ()
+				set (CLIP_MSG "none")
+			endif ()
 
-	message (STATUS "Checking processor clipping capabilities... ${CLIP_MSG}")
+		endif (CMAKE_CROSSCOMPILING)
 
+		message (STATUS "Checking processor clipping capabilities... ${CLIP_MSG}")
+	endif ()
 endmacro (CLIP_MODE)