internal/rosa: patch library paths

This removes the need for reference LDFLAGS in the standard toolchain.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/rosa/musl.go

@@ -29,8 +29,12 @@ func (t Toolchain) NewMusl(attr *MuslAttr) pkg.Artifact {
 
 	target := "install"
 	script := `
-mv -v /work/lib/* /work/system/lib
-rmdir -v /work/lib/
+mkdir -p /work/system/bin
+COMPAT_LINKER_NAME="ld-musl-$(uname -m).so.1"
+ln -vs ../lib/libc.so /work/system/bin/linker
+ln -vs libc.so "/work/system/lib/${COMPAT_LINKER_NAME}"
+rm -v "/work/lib/${COMPAT_LINKER_NAME}"
+rmdir -v /work/lib
 `
 	if attr.Headers {
 		target = "install-headers"