add configure flag --with-default-sysroot

llvm-svn: 154791

1 files changed, 17 insertions, 2 deletions

diff --git a/llvm/configure b/llvm/configure
index e87160d75c4..df462a923a5 100755
--- a/llvm/configure
+++ b/llvm/configure
@@ -1442,6 +1442,7 @@ Optional Packages:
   --with-c-include-dirs   Colon separated list of directories clang will
                           search for headers
   --with-gcc-toolchain    Directory where gcc is installed.
+  --with-default-sysroot  Add --sysroot=<path> to all compiler invocations.
   --with-binutils-include Specify path to binutils/include/ containing
                           plugin-api.h file for gold plugin.
   --with-bug-report-url   Specify the URL where bug reports should be
@@ -3802,7 +3803,7 @@ else
     llvm_cv_target_os_type="Darwin" ;;
   *-*-minix*)
     llvm_cv_target_os_type="Minix" ;;
-  *-*-freebsd*| *-*-kfreebsd-gnu)
+  *-*-freebsd* | *-*-kfreebsd-gnu)
     llvm_cv_target_os_type="FreeBSD" ;;
   *-*-openbsd*)
     llvm_cv_target_os_type="OpenBSD" ;;
@@ -5583,6 +5584,20 @@ _ACEOF
 
 
 
+# Check whether --with-sysroot was given.
+if test "${with_sysroot+set}" = set; then
+  withval=$with_sysroot;
+else
+  withval=""
+fi
+
+
+cat >>confdefs.h <<_ACEOF
+#define DEFAULT_SYSROOT "$withval"
+_ACEOF
+
+
+
 # Check whether --with-binutils-include was given.
 if test "${with_binutils_include+set}" = set; then
   withval=$with_binutils_include;
@@ -10386,7 +10401,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 10387 "configure"
+#line 10404 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H