wrappers: Use config files for setting defaults

install-wrappers.sh

@@ -122,6 +122,10 @@ fi
 
 mkdir -p "$PREFIX/bin"
 cp wrappers/*-wrapper.sh "$PREFIX/bin"
+cp wrappers/musl-common.cfg "$PREFIX/bin"
+for arch in $ARCHS; do
+    cp wrappers/$arch*.cfg $PREFIX/bin
+done
 if [ -n "$HOST" ] && [ -n "$EXEEXT" ]; then
     # TODO: If building natively on msys, pick up the default HOST value from there.
     WRAPPER_FLAGS="$WRAPPER_FLAGS -DDEFAULT_TARGET=\"$HOST\""

wrappers/aarch64-unknown-linux-musl.cfg

@@ -0,0 +1,2 @@
+-target aarch64-linux-musl
+@musl-common.cfg

wrappers/arm-unknown-linux-musleabihf.cfg

@@ -0,0 +1,2 @@
+-target armv7-linux-musleabihf
+@musl-common.cfg

wrappers/armv7-unknown-linux-musleabihf.cfg

@@ -0,0 +1,2 @@
+-target armv7-linux-musleabihf
+@musl-common.cfg

wrappers/clang-target-wrapper.c

@@ -32,13 +32,6 @@ int _tmain(int argc, TCHAR* argv[]) {
     split_argv(argv[0], &dir, NULL, &target, &exe);
     if (!target)
         target = _T(DEFAULT_TARGET);
-    TCHAR *arch = _tcsdup(target);
-    TCHAR *dash = _tcschr(arch, '-');
-    TCHAR *target_without_arch = NULL;
-    if (dash) {
-        *dash = '\0';
-        target_without_arch = dash + 1;
-    }
 
     TCHAR *basedir = _tcsdup(dir);
     size_t basedirlen = _tcslen(basedir);
@@ -48,12 +41,6 @@ int _tmain(int argc, TCHAR* argv[]) {
     TCHAR *sep = _tcsrchrs(basedir, '/', '\\');
     if (sep)
         *(sep + 1) = '\0';
-    TCHAR *sysroot = concat(basedir, _T("generic-linux-musl"));
-    if (!_tcscmp(arch, _T("arm"))) {
-        arch = _T("armv7");
-        if (target_without_arch)
-            target = concat(_T("armv7-"), target_without_arch);
-    }
 
     // Check if trying to compile Ada; if we try to do this, invoking clang
     // would end up invoking <triplet>-gcc with the same arguments, which ends
@@ -65,7 +52,7 @@ int _tmain(int argc, TCHAR* argv[]) {
         }
     }
 
-    int max_arg = argc + 18;
+    int max_arg = argc + 17;
     const TCHAR **exec_argv = malloc((max_arg + 1) * sizeof(*exec_argv));
     int arg = 0;
     if (getenv("CCACHE"))
@@ -83,11 +70,6 @@ int _tmain(int argc, TCHAR* argv[]) {
 
     exec_argv[arg++] = _T("-target");
     exec_argv[arg++] = target;
-    exec_argv[arg++] = concat(_T("--sysroot="), sysroot);
-    exec_argv[arg++] = _T("-rtlib=compiler-rt");
-    exec_argv[arg++] = _T("-unwindlib=libunwind");
-    exec_argv[arg++] = _T("-stdlib=libc++");
-    exec_argv[arg++] = _T("-fuse-ld=lld");
     exec_argv[arg++] = _T("--end-no-unused-arguments");
 
     for (int i = 1; i < argc; i++)

wrappers/clang-target-wrapper.sh

@@ -32,13 +32,7 @@ DEFAULT_TARGET=x86_64-linux-musl
 if [ "$TARGET" = "$BASENAME" ]; then
     TARGET=$DEFAULT_TARGET
 fi
-ARCH="${TARGET%%-*}"
 SYSROOT="$(dirname "$DIR")/generic-linux-musl"
-if [ "$ARCH" = "arm" ]; then
-    # Convert arm-linux-musleabihf into armv7-linux-musleabihf
-    ARCH=armv7
-    TARGET=$ARCH-${TARGET#*-}
-fi
 
 # Check if trying to compile Ada; if we try to do this, invoking clang
 # would end up invoking <triplet>-gcc with the same arguments, which ends
@@ -74,11 +68,6 @@ c11)
 esac
 
 FLAGS="$FLAGS -target $TARGET"
-FLAGS="$FLAGS --sysroot=$SYSROOT"
-FLAGS="$FLAGS -rtlib=compiler-rt"
-FLAGS="$FLAGS -unwindlib=libunwind"
-FLAGS="$FLAGS -stdlib=libc++"
-FLAGS="$FLAGS -fuse-ld=lld"
 FLAGS="$FLAGS --end-no-unused-arguments"
 
 $CCACHE "$CLANG" $FLAGS "$@" $LINKER_FLAGS

wrappers/i386-unknown-linux-musl.cfg

@@ -0,0 +1,2 @@
+-target i386-linux-musl
+@musl-common.cfg

wrappers/musl-common.cfg

@@ -0,0 +1,5 @@
+--sysroot=<CFGDIR>/../generic-linux-musl
+-rtlib=compiler-rt
+-unwindlib=libunwind
+-stdlib=libc++
+-fuse-ld=lld

wrappers/powerpc64le-unknown-linux-musl.cfg

@@ -0,0 +1,2 @@
+-target powerpc64le-linux-musl
+@musl-common.cfg

wrappers/riscv64-unknown-linux-musl.cfg

@@ -0,0 +1,2 @@
+-target riscv64-linux-musl
+@musl-common.cfg

wrappers/x86_64-unknown-linux-musl.cfg

@@ -0,0 +1,2 @@
+-target x86_64-linux-musl
+@musl-common.cfg