* Allow skipping parts of the installation to be able to do it in par…

…ts if one

  phase fails and the user wants to reinstall one of the components.
* Fixed LLVM-GCC configuration flags: s/--with-gnu-{as,ld}/--with-{as,ld}/
  The former is a boolean flag, the latter is a flag that takes a path.
* Added a new flag CROSS_MARCH, defaults to armv6.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74840 91177308-0d34-0410-b5e6-96231b3b80d8

utils/crosstool/ARM/build-install-linux.sh

@@ -17,6 +17,7 @@ readonly OBJ_ROOT="${SCRATCH_ROOT}/obj"
 
 readonly CROSS_HOST="x86_64-unknown-linux-gnu"
 readonly CROSS_TARGET="arm-none-linux-gnueabi"
+readonly CROSS_MARCH="${CROSS_MARCH:-armv6}"
 
 readonly CODE_SOURCERY="${INSTALL_ROOT}/codesourcery"
 readonly CODE_SOURCERY_PKG_PATH="${CODE_SOURCERY_PKG_PATH:-${HOME}/codesourcery}"
@@ -104,12 +105,9 @@ runAndLog() {
 }
 
 installCodeSourcery() {
-  # Create CodeSourcery dir, if necessary.
-  verifyNotDir ${CODE_SOURCERY}
-  sudoCreateDir ${CODE_SOURCERY}
-
-  # Unpack the tarball.
+  # Unpack the tarball, creating the CodeSourcery dir, if necessary.
   if [[ ! -d ${CODE_SOURCERY_ROOT} ]]; then
+    sudoCreateDir ${CODE_SOURCERY}
     cd ${CODE_SOURCERY}
     if [[ -e ${CODE_SOURCERY_PKG_PATH}/${CODE_SOURCERY_PKG} ]]; then
       runCommand "Unpacking CodeSourcery in ${CODE_SOURCERY}" \
@@ -122,7 +120,7 @@ installCodeSourcery() {
       exit
     fi
   else
-    echo "CodeSourcery install dir already exists."
+    echo "CodeSourcery install dir already exists; skipping."
   fi
 
   # Verify our CodeSourcery toolchain installation.
@@ -141,7 +139,11 @@ installCodeSourcery() {
 }
 
 installLLVM() {
-  verifyNotDir ${LLVM_INSTALL_DIR}
+  if [[ -d ${LLVM_INSTALL_DIR} ]]; then
+    echo "LLVM install dir ${LLVM_INSTALL_DIR} exists; skipping."
+    return
+  fi
+
   sudoCreateDir ${LLVM_INSTALL_DIR}
 
   # Unpack LLVM tarball; should create the directory "llvm".
@@ -165,7 +167,11 @@ installLLVM() {
 }
 
 installLLVMGCC() {
-  verifyNotDir ${LLVMGCC_INSTALL_DIR}
+  if [[ -d ${LLVMGCC_INSTALL_DIR} ]]; then
+    echo "LLVM-GCC install dir ${LLVMGCC_INSTALL_DIR} exists; skipping."
+    return
+  fi
+
   sudoCreateDir ${LLVMGCC_INSTALL_DIR}
 
   # Unpack LLVM-GCC tarball; should create the directory "llvm-gcc-4.2".
@@ -182,8 +188,9 @@ installLLVMGCC() {
       --prefix=${LLVMGCC_INSTALL_DIR} \
       --program-prefix=llvm- \
       --target=${CROSS_TARGET} \
-      --with-gnu-as=${CROSS_TARGET_AS} \
-      --with-gnu-ld=${CROSS_TARGET_LD} \
+      --with-arch=${CROSS_MARCH} \
+      --with-as=${CROSS_TARGET_AS} \
+      --with-ld=${CROSS_TARGET_LD} \
       --with-sysroot=${SYSROOT}
   runAndLog "Building LLVM-GCC" ${LLVMGCC_OBJ_DIR}/llvmgcc-build.log \
       make