itINSTALL: build arm64 binaries on arm64 Macs - plan9port - [fork] Plan 9 from user space	Err	mx1.adamsgaard.dk	70
hgit clone git://src.adamsgaard.dk/plan9port	URL:git://src.adamsgaard.dk/plan9port	mx1.adamsgaard.dk	70
1Log	/src/plan9port/log.gph	mx1.adamsgaard.dk	70
1Files	/src/plan9port/files.gph	mx1.adamsgaard.dk	70
1Refs	/src/plan9port/refs.gph	mx1.adamsgaard.dk	70
1README	/src/plan9port/file/README.md.gph	mx1.adamsgaard.dk	70
1LICENSE	/src/plan9port/file/LICENSE.gph	mx1.adamsgaard.dk	70
i---	Err	mx1.adamsgaard.dk	70
1commit bab7b73b85f865d20a5c4f2d78ac9e81b3d39109	/src/plan9port/commit/bab7b73b85f865d20a5c4f2d78ac9e81b3d39109.gph	mx1.adamsgaard.dk	70
1parent d0d440860f2000a1560abb3f593cdc325fcead4c	/src/plan9port/commit/d0d440860f2000a1560abb3f593cdc325fcead4c.gph	mx1.adamsgaard.dk	70
hAuthor: Russ Cox <rsc@swtch.com>	URL:mailto:rsc@swtch.com	mx1.adamsgaard.dk	70
iDate:   Mon, 24 Jan 2022 13:47:27 -0500	Err	mx1.adamsgaard.dk	70
i	Err	mx1.adamsgaard.dk	70
iINSTALL: build arm64 binaries on arm64 Macs	Err	mx1.adamsgaard.dk	70
i	Err	mx1.adamsgaard.dk	70
iIf there is any x86 binary in the chain of parent processes from	Err	mx1.adamsgaard.dk	70
itthe current one, then uname -m prints x86_64 and clang	Err	mx1.adamsgaard.dk	70
idefaults to building x86_64 binaries.	Err	mx1.adamsgaard.dk	70
i	Err	mx1.adamsgaard.dk	70
iDetect arm64 using the kernel version and force building	Err	mx1.adamsgaard.dk	70
ian arm64 toolchain instead of perpetuating x86.	Err	mx1.adamsgaard.dk	70
i	Err	mx1.adamsgaard.dk	70
iThis is particularly important when the user shell is rc,	Err	mx1.adamsgaard.dk	70
iwhich has been built for x86, because then rebuilding	Err	mx1.adamsgaard.dk	70
iunder rc continues to use x86.	Err	mx1.adamsgaard.dk	70
i	Err	mx1.adamsgaard.dk	70
iDiffstat:	Err	mx1.adamsgaard.dk	70
i  M INSTALL                             |      10 +++++++++-	Err	mx1.adamsgaard.dk	70
i	Err	mx1.adamsgaard.dk	70
i1 file changed, 9 insertions(+), 1 deletion(-)	Err	mx1.adamsgaard.dk	70
i---	Err	mx1.adamsgaard.dk	70
1diff --git a/INSTALL b/INSTALL	/src/plan9port/file/INSTALL.gph	mx1.adamsgaard.dk	70
it@@ -95,7 +95,15 @@ if [ `uname` = Darwin ]; then	Err	mx1.adamsgaard.dk	70
i                 echo "See http://swtch.com/go/xcodegcc for details." >&2	Err	mx1.adamsgaard.dk	70
i                 exit 1	Err	mx1.adamsgaard.dk	70
i         fi	Err	mx1.adamsgaard.dk	70
i-        echo "CC9='xcrun --sdk macosx clang'" >>$PLAN9/config	Err	mx1.adamsgaard.dk	70
i+        CC9="xcrun --sdk macosx clang"	Err	mx1.adamsgaard.dk	70
i+        case "$(uname -a)" in	Err	mx1.adamsgaard.dk	70
i+        *ARM64*)	Err	mx1.adamsgaard.dk	70
i+                CC9="$CC9 -arch arm64"	Err	mx1.adamsgaard.dk	70
i+                echo '        Forcing arm64 binaries with clang.'	Err	mx1.adamsgaard.dk	70
i+                ;;	Err	mx1.adamsgaard.dk	70
i+        esac	Err	mx1.adamsgaard.dk	70
i+	Err	mx1.adamsgaard.dk	70
i+        echo "CC9='$CC9'" >>$PLAN9/config	Err	mx1.adamsgaard.dk	70
i         rm -f ./a.out	Err	mx1.adamsgaard.dk	70
i fi	Err	mx1.adamsgaard.dk	70
i 	Err	mx1.adamsgaard.dk	70
.