1 files changed, 26 insertions, 0 deletions
diff --git a/clang/test/Driver/sysroot-flags.c b/clang/test/Driver/sysroot-flags.c
new file mode 100644
index 00000000000..35f484afc7b
--- /dev/null
+++ b/clang/test/Driver/sysroot-flags.c
@@ -0,0 +1,26 @@
+// Check for proper handling of --sysroot and -isysroot flags.
+
+// RUN: %clang -### -fsyntax-only -isysroot /foo/bar %s |& \
+// RUN:   FileCheck %s -check-prefix=ISYSROOT
+// ISYSROOT: "-isysroot" "/foo/bar"
+
+// Check that we get both isysroot for headers, and pass --sysroot on to GCC to
+// produce the final binary.
+// RUN: %clang -### -triple x86_64-unknown-linux-gnu --sysroot=/foo/bar \
+// RUN:   -o /dev/null %s |& FileCheck %s -check-prefix=SYSROOT_EQ
+// SYSROOT_EQ: "-isysroot" "/foo/bar"
+// SYSROOT_EQ: "--sysroot=/foo/bar"
+
+// Check for overriding the header sysroot by providing both --sysroot and
+// -isysroot.
+// RUN: %clang -### -triple x86_64-unknown-linux-gnu -isysroot /baz \
+// RUN:   --sysroot=/foo/bar -o /dev/null %s |& FileCheck %s \
+// RUN:   -check-prefix=ISYSROOT_AND_SYSROOT
+// ISYSROOT_AND_SYSROOT: "-isysroot" "/baz"
+// ISYSROOT_AND_SYSROOT: "--sysroot=/foo/bar"
+
+// Check that omitting the equals works as well.
+// RUN: %clang -### -triple x86_64-unknown-linux-gnu --sysroot /foo/bar \
+// RUN:   -o /dev/null %s |& FileCheck %s -check-prefix=SYSROOT_SEPARATE
+// SYSROOT_SEPARATE: "-isysroot" "/foo/bar"
+// SYSROOT_SEPARATE: "--sysroot=/foo/bar"