Allow overriding what archs to build for, or what version to target, for MACOS_REDIST builds

build-lldb-mi.sh

@@ -103,8 +103,17 @@ if [ -n "$HOST" ]; then
 fi
 
 if [ -n "$MACOS_REDIST" ]; then
-    CMAKEFLAGS="$CMAKEFLAGS -DCMAKE_OSX_ARCHITECTURES=arm64;x86_64"
-    CMAKEFLAGS="$CMAKEFLAGS -DCMAKE_OSX_DEPLOYMENT_TARGET=10.9"
+    : ${MACOS_REDIST_ARCHS:=arm64 x86_64}
+    : ${MACOS_REDIST_VERSION:=10.9}
+    ARCH_LIST=""
+    for arch in $MACOS_REDIST_ARCHS; do
+        if [ -n "$ARCH_LIST" ]; then
+            ARCH_LIST="$ARCH_LIST;"
+        fi
+        ARCH_LIST="$ARCH_LIST$arch"
+    done
+    CMAKEFLAGS="$CMAKEFLAGS -DCMAKE_OSX_ARCHITECTURES=$ARCH_LIST"
+    CMAKEFLAGS="$CMAKEFLAGS -DCMAKE_OSX_DEPLOYMENT_TARGET=$MACOS_REDIST_VERSION"
 fi
 
 cd lldb-mi

build-llvm.sh

@@ -241,8 +241,27 @@ if [ -n "$LTO" ]; then
 fi
 
 if [ -n "$MACOS_REDIST" ]; then
-    CMAKEFLAGS="$CMAKEFLAGS -DCMAKE_OSX_ARCHITECTURES=arm64;x86_64"
-    CMAKEFLAGS="$CMAKEFLAGS -DCMAKE_OSX_DEPLOYMENT_TARGET=10.9"
+    : ${MACOS_REDIST_ARCHS:=arm64 x86_64}
+    : ${MACOS_REDIST_VERSION:=10.9}
+    ARCH_LIST=""
+    NATIVE=
+    for arch in $MACOS_REDIST_ARCHS; do
+        if [ -n "$ARCH_LIST" ]; then
+            ARCH_LIST="$ARCH_LIST;"
+        fi
+        ARCH_LIST="$ARCH_LIST$arch"
+        if [ "$(uname -m)" = "$arch" ]; then
+            NATIVE=1
+        fi
+    done
+    CMAKEFLAGS="$CMAKEFLAGS -DCMAKE_OSX_ARCHITECTURES=$ARCH_LIST"
+    CMAKEFLAGS="$CMAKEFLAGS -DCMAKE_OSX_DEPLOYMENT_TARGET=$MACOS_REDIST_VERSION"
+    if [ -z "$NATIVE" ]; then
+        # If we're not building for the native arch, flag to CMake that we're
+        # cross compiling, to let it build native versions of tools used
+        # during the build.
+        CMAKEFLAGS="$CMAKEFLAGS -DCMAKE_SYSTEM_NAME=Darwin"
+    fi
 fi
 
 if [ -z "$HOST" ] && [ "$(uname)" = "Darwin" ]; then

build-mingw-w64-tools.sh

@@ -74,9 +74,26 @@ else
 fi
 if [ -n "$MACOS_REDIST" ]; then
     if [ -z "$CFLAGS" ]; then
-        export CFLAGS="-g -O2"
+        CFLAGS="-g -O2"
     fi
-    export CFLAGS="$CFLAGS -arch arm64 -arch x86_64 -mmacosx-version-min=10.9"
+    : ${MACOS_REDIST_ARCHS:=arm64 x86_64}
+    : ${MACOS_REDIST_VERSION:=10.9}
+    NONNATIVE_ARCH=
+    for arch in $MACOS_REDIST_ARCHS; do
+        CFLAGS="$CFLAGS -arch $arch"
+        if [ "$(uname -m)" != "$arch" ]; then
+            case $arch in
+            arm64) NONNATIVE_ARCH=aarch64 ;;
+            *)     NONNATIVE_ARCH=$arch ;;
+            esac
+        fi
+    done
+    if [ -n "$NONNATIVE_ARCH" ]; then
+        # If we're not building for the native arch, flag that we're
+        # cross compiling.
+        CONFIGFLAGS="$CONFIGFLAGS --host=$NONNATIVE_ARCH-apple-darwin"
+    fi
+    export CFLAGS="$CFLAGS -mmacosx-version-min=$MACOS_REDIST_VERSION"
 fi
 if [ -n "$SKIP_INCLUDE_TRIPLET_PREFIX" ]; then
     INCLUDEDIR="$PREFIX/include"

install-wrappers.sh

@@ -55,7 +55,12 @@ if [ -n "$HOST" ]; then
 fi
 
 if [ -n "$MACOS_REDIST" ]; then
-    WRAPPER_FLAGS="$WRAPPER_FLAGS -arch arm64 -arch x86_64 -mmacosx-version-min=10.9"
+    : ${MACOS_REDIST_ARCHS:=arm64 x86_64}
+    : ${MACOS_REDIST_VERSION:=10.9}
+    for arch in $MACOS_REDIST_ARCHS; do
+        WRAPPER_FLAGS="$WRAPPER_FLAGS -arch $arch"
+    done
+    WRAPPER_FLAGS="$WRAPPER_FLAGS -mmacosx-version-min=$MACOS_REDIST_VERSION"
 fi
 
 if [ -n "$EXEEXT" ]; then