Consolidate cflags that are set on all devices

Move cflags that are set on all devices to deviceGlobalCflags:
-fno-canonical-system-headers
-ffunction-sections
-funwind-tables
-fstack-protector-strong
-Wa,--noexecstack
-D_FORTIFY_SOURCE=2
-Wstrict-aliasing=2
-Werror=format-security

Bug: 68855788
Test: m checkbuild
Change-Id: Iefec689fdd2749013d0cc003b3abec674a85fb74

cc/config/arm64_device.go

@@ -23,15 +23,8 @@ import (
 
 var (
 	arm64Cflags = []string{
-		"-fstack-protector-strong",
-		"-ffunction-sections",
 		"-fdata-sections",
-		"-funwind-tables",
-		"-Wa,--noexecstack",
-		"-Werror=format-security",
-		"-D_FORTIFY_SOURCE=2",
 		"-fno-short-enums",
-		"-fno-canonical-system-headers",
 
 		// Help catch common 32/64-bit errors.
 		"-Werror=implicit-function-declaration",
@@ -39,7 +32,6 @@ var (
 		"-fno-strict-volatile-bitfields",
 
 		// TARGET_RELEASE_CFLAGS
-		"-Wstrict-aliasing=2",
 		"-fgcse-after-reload",
 		"-frerun-cse-after-loop",
 		"-frename-registers",

cc/config/arm_device.go

@@ -28,21 +28,13 @@ var (
 	}
 
 	armCflags = []string{
-		"-ffunction-sections",
 		"-fdata-sections",
-		"-funwind-tables",
-		"-fstack-protector-strong",
-		"-Wa,--noexecstack",
-		"-Werror=format-security",
-		"-D_FORTIFY_SOURCE=2",
 		"-fno-short-enums",
-		"-fno-canonical-system-headers",
 
 		"-fno-builtin-sin",
 		"-fno-strict-volatile-bitfields",
 
 		// TARGET_RELEASE_CFLAGS
-		"-Wstrict-aliasing=2",
 		"-fgcse-after-reload",
 		"-frerun-cse-after-loop",
 		"-frename-registers",

cc/config/global.go

@@ -54,12 +54,21 @@ var (
 	deviceGlobalCflags = []string{
 		"-fdiagnostics-color",
 
-		// TARGET_ERROR_FLAGS
+		"-fno-canonical-system-headers",
+		"-ffunction-sections",
+		"-funwind-tables",
+		"-fstack-protector-strong",
+		"-Wa,--noexecstack",
+		"-D_FORTIFY_SOURCE=2",
+
+		"-Wstrict-aliasing=2",
+
 		"-Werror=return-type",
 		"-Werror=non-virtual-dtor",
 		"-Werror=address",
 		"-Werror=sequence-point",
 		"-Werror=date-time",
+		"-Werror=format-security",
 	}
 
 	hostGlobalCflags = []string{}

cc/config/mips64_device.go

@@ -25,20 +25,12 @@ var (
 		"-fomit-frame-pointer",
 		"-funswitch-loops",
 		"-Umips",
-		"-ffunction-sections",
 		"-fdata-sections",
-		"-funwind-tables",
-		"-fstack-protector-strong",
-		"-Wa,--noexecstack",
-		"-Werror=format-security",
-		"-D_FORTIFY_SOURCE=2",
-		"-fno-canonical-system-headers",
 
 		// Help catch common 32/64-bit errors.
 		"-Werror=implicit-function-declaration",
 
 		// TARGET_RELEASE_CFLAGS
-		"-Wstrict-aliasing=2",
 		"-fgcse-after-reload",
 		"-frerun-cse-after-loop",
 		"-frename-registers",

cc/config/mips_device.go

@@ -25,17 +25,9 @@ var (
 		"-fomit-frame-pointer",
 		"-funswitch-loops",
 		"-Umips",
-		"-ffunction-sections",
 		"-fdata-sections",
-		"-funwind-tables",
-		"-fstack-protector-strong",
-		"-Wa,--noexecstack",
-		"-Werror=format-security",
-		"-D_FORTIFY_SOURCE=2",
-		"-fno-canonical-system-headers",
 
 		// TARGET_RELEASE_CFLAGS
-		"-Wstrict-aliasing=2",
 		"-fgcse-after-reload",
 		"-frerun-cse-after-loop",
 		"-frename-registers",

cc/config/x86_64_device.go

@@ -22,18 +22,10 @@ import (
 
 var (
 	x86_64Cflags = []string{
-		"-Wa,--noexecstack",
-		"-Werror=format-security",
-		"-D_FORTIFY_SOURCE=2",
-		"-Wstrict-aliasing=2",
-		"-ffunction-sections",
 		"-finline-functions",
 		"-finline-limit=300",
 		"-fno-short-enums",
 		"-funswitch-loops",
-		"-funwind-tables",
-		"-fstack-protector-strong",
-		"-fno-canonical-system-headers",
 
 		// Help catch common 32/64-bit errors.
 		"-Werror=implicit-function-declaration",

cc/config/x86_device.go

@@ -22,18 +22,10 @@ import (
 
 var (
 	x86Cflags = []string{
-		"-Wa,--noexecstack",
-		"-Werror=format-security",
-		"-D_FORTIFY_SOURCE=2",
-		"-Wstrict-aliasing=2",
-		"-ffunction-sections",
 		"-finline-functions",
 		"-finline-limit=300",
 		"-fno-short-enums",
 		"-funswitch-loops",
-		"-funwind-tables",
-		"-fstack-protector-strong",
-		"-fno-canonical-system-headers",
 	}
 
 	x86ClangCflags = append(x86Cflags, []string{