cc-wrapper: limit no-omit-leaf-frame-pointer to supported platforms (#413673) (ef6847e2) · Commits · nix / nixpkgs

pkgs/build-support/cc-wrapper/default.nix

+15 −3

Original line number	Diff line number	Diff line
		@@ -804,9 +804,21 @@ stdenvNoCC.mkDerivation {
		# Do not prevent omission of framepointers on x86 32bit due to the small
		# number of general purpose registers. Keeping EBP available provides
		# non-trivial performance benefits.
		+ optionalString (!targetPlatform.isx86_32) ''
		echo " -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer " >> $out/nix-support/cc-cflags-before
		+ (
		let
		enable_fp = !targetPlatform.isx86_32;
		enable_leaf_fp =
		enable_fp
		&& (
		targetPlatform.isx86_64
		\|\| targetPlatform.isAarch64
		\|\| (targetPlatform.isRiscV && (!isGNU \|\| versionAtLeast ccVersion "15.1"))
		);
		in
		optionalString enable_fp ''
		echo " -fno-omit-frame-pointer ${optionalString enable_leaf_fp "-mno-omit-leaf-frame-pointer "}" >> $out/nix-support/cc-cflags-before
		''
		)

		# For clang, this is handled in add-clang-cc-cflags-before.sh
		+ optionalString (!isClang && machineFlags != [ ]) ''