Remove -mwindows linker flag for msys2 build and adjust OPT flags on various platform (#7872)

#changelog #msys

Author: Segfault1602

libs/openFrameworksCompiled/project/msys2/config.msys2.default.mk

@@ -129,9 +129,6 @@ ifeq ($(findstring MINGW64,$(MSYSTEM)),MINGW64)
 	PLATFORM_LDFLAGS += -Wl,--disable-dynamicbase,--disable-high-entropy-va,--default-image-base-low
 endif
 
-ifndef DEBUG
-	PLATFORM_LDFLAGS += -mwindows
-endif
 ifeq ($(findstring OF_USING_STD_FS, $(PLATFORM_DEFINES)),OF_USING_STD_FS)
 	PLATFORM_LDFLAGS += -lstdc++fs
 endif
@@ -151,7 +148,7 @@ endif
 ##########################################################################################
 
 # RELEASE Debugging options (http://gcc.gnu.org/onlinedocs/gcc/Debugging-Options.html)
-PLATFORM_OPTIMIZATION_CFLAGS_RELEASE = -Os
+PLATFORM_OPTIMIZATION_CFLAGS_RELEASE = -O3
 
 # DEBUG Debugging options (http://gcc.gnu.org/onlinedocs/gcc/Debugging-Options.html)
 PLATFORM_OPTIMIZATION_CFLAGS_DEBUG = -g3 #-D_GLIBCXX_DEBUG
@@ -233,7 +230,7 @@ PLATFORM_CORE_EXCLUSIONS += $(OF_LIBS_PATH)/utf8/%
 
 PLATFORM_LIBRARIES += ksuser opengl32 gdi32 msimg32 glu32 dsound winmm strmiids #dxguid
 PLATFORM_LIBRARIES += uuid ole32 oleaut32 setupapi wsock32 ws2_32 Iphlpapi Comdlg32
-PLATFORM_LIBRARIES += freeimage 
+PLATFORM_LIBRARIES += freeimage
 # PLATFORM_LIBRARIES += boost_filesystem-mt boost_system-mt
 PLATFORM_LIBRARIES += mf mfplat mfuuid mfreadwrite
 # PLATFORM_LIBRARIES += glfw3
@@ -324,13 +321,13 @@ copy_dlls:
 	@echo "     copying dlls to bin"
 
 	@ntldd --recursive $(wildcard bin/$(APPNAME)*.exe) | sed -e 's:\\:/:g' | grep -F "$(MINGW_PREFIX)" | cut -d">" -f2 |cut -d" " -f2 >dlllist
-	
+
 	@while read -r dll; do \
 		test -e "$$dll" && cp "$$dll" ./bin; \
     done <dlllist
 	@echo "     `wc -l <dlllist` dlls copied"
 	@rm dlllist
-	
+
 afterplatform: $(TARGET_NAME)
 	-cp ${OF_LIBS_PATH}/*/lib/${PLATFORM_LIB_SUBPATH}/*.${SHARED_LIB_EXTENSION} bin/ ; true
 	@echo

libs/openFrameworksCompiled/project/osx/config.osx.default.mk

@@ -185,7 +185,7 @@ PLATFORM_LDFLAGS += -mmacosx-version-min=$(MAC_OS_MIN_VERSION) -v
 ##########################################################################################
 
 # RELEASE Debugging options (http://gcc.gnu.org/onlinedocs/gcc/Debugging-Options.html)
-PLATFORM_OPTIMIZATION_CFLAGS_RELEASE = -Os
+PLATFORM_OPTIMIZATION_CFLAGS_RELEASE = -O3
 
 # DEBUG Debugging options (http://gcc.gnu.org/onlinedocs/gcc/Debugging-Options.html)
 PLATFORM_OPTIMIZATION_CFLAGS_DEBUG = -g3
@@ -366,7 +366,7 @@ afterplatform: $(TARGET_NAME)
 # Use the openFrameworks-Info.plist as the default. Feel free to edit it in your project folder to override and values.
 	@if [ ! -f openFrameworks-Info.plist ]; then cp $(OF_ROOT)/scripts/templates/osx/openFrameworks-Info.plist openFrameworks-Info.plist; fi
 	@cp openFrameworks-Info.plist bin/$(BIN_NAME).app/Contents/Info.plist;
-	
+
 # App icons
  ifeq ($(RUN_TARGET), RunRelease)
 	@if [ -f of.icns ]; then cp of.icns bin/$(BIN_NAME).app/Contents/Resources/; else cp $(OF_LIBS_PATH)/openFrameworksCompiled/project/osx/of.icns bin/$(BIN_NAME).app/Contents/Resources/; fi
@@ -375,13 +375,13 @@ afterplatform: $(TARGET_NAME)
 	@if [ -f of_debug.icns ]; then cp of_debug.icns bin/$(BIN_NAME).app/Contents/Resources/; else cp $(OF_LIBS_PATH)/openFrameworksCompiled/project/osx/of_debug.icns bin/$(BIN_NAME).app/Contents/Resources/; fi
 	@sed -i '' 's/\$$(ICON_NAME)/of_debug.icns/g' bin/$(BIN_NAME).app/Contents/Info.plist
  endif
- 
+
 	@sed -i '' 's/\$$(DEVELOPMENT_LANGUAGE)/English/g' bin/$(BIN_NAME).app/Contents/Info.plist
 	@sed -i '' 's/\$$(EXECUTABLE_NAME)/$(BIN_NAME)/g' bin/$(BIN_NAME).app/Contents/Info.plist
 	@sed -i '' 's/\$$(TARGET_NAME)/$(BIN_NAME)/g' bin/$(BIN_NAME).app/Contents/Info.plist
 	@sed -i '' 's/\$$(PRODUCT_BUNDLE_IDENTIFIER)/cc.openFrameworks.$(BIN_NAME)/g' bin/$(BIN_NAME).app/Contents/Info.plist
 	@sed -i '' 's/\$$(VERSION)/1.0/g' bin/$(BIN_NAME).app/Contents/Info.plist
-		
+
 	@echo TARGET=$(TARGET)
 	@mv $(TARGET) bin/$(BIN_NAME).app/Contents/MacOS