Date: Sun, 19 Mar 2023 19:46:34 -0500 From: Rob Landley <rob@...dley.net> To: Rich Felker <dalias@...c.org>, musl <musl@...ts.openwall.com> Subject: mcm native compile and llvm. 1) In case you missed the #musl irc backscroll, building current mcm tip of tree works but building native compilers with the results fails unless you add https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80196#c13 to patches/gcc-11.2.0 list, which is the exact same fix they applied upstream: https://gcc.gnu.org/git/gitweb.cgi?p=gcc.git;h=4fde88e5dd152fe866a97b12e0f8229970d15cb3 So it's basically a backport. Attached is the one I used, which Worked For Me. (P.S. Apparently gcc 11.2.0 build breaks configuring libstdc++ on a machine that hasn't got floating point support, so even the _cross_ armv7r toolchain doesn't build anymore. Possibly I need to beat soft float out of it in the config somewhere? Oh well...) 2) I have an old blog entry: https://landley.net/notes-2021.html#28-07-2021 Where I was building clang/llvm compilers, which resulted in this patch against musl (ported to current git): diff --git a/configure b/configure index 853bf05e..61471d61 100755 --- a/configure +++ b/configure @@ -321,8 +321,8 @@ printf "%s\n" "$target" # case "$target" in # Catch these early to simplify matching for 32-bit archs -arm*) ARCH=arm ;; -aarch64*) ARCH=aarch64 ;; +thumb*|arm*) ARCH=arm ;; +arm64*|aarch64*) ARCH=aarch64 ;; i?86-nt32*) ARCH=nt32 ;; i?86*) ARCH=i386 ;; x86_64-x32*|x32*|x86_64*x32) ARCH=x32 ;; @@ -337,7 +337,7 @@ powerpc64*|ppc64*) ARCH=powerpc64 ;; powerpc*|ppc*) ARCH=powerpc ;; riscv64*) ARCH=riscv64 ;; sh[1-9bel-]*|sh|superh*) ARCH=sh ;; -s390x*) ARCH=s390x ;; +s390x*|systemz*) ARCH=s390x ;; unknown) fail "$0: unable to detect target arch; try $0 --target=..." ;; *) fail "$0: unknown or unsupported target \"$target\"" ;; esac Because llvm uses different tuple names from the gnu/dammit stuff and it might be nice to support both? (Is anybody else out there building musl clang toolchains? I fished a hexagon build out of qemu's test infrastructure, and I got pointed at google fuchsia doing x86 and arm, but that's 3 architectures total and the hexagon build broke when I pulled a newer llvm...) Rob View attachment "0006-native.diff" of type "text/x-patch" (871 bytes)
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