Allow -target= and --target options

Using clang as a cross-compiler with the 'target' option could be confusing
for those inexperienced in the realm of cross compiling.

This patch would allow the use of all these four variants of the target option:
-target <triple>
--target <triple>
-target=<triple>
--target=<triple>

Patch by Gabor Ballabas.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@231787 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/clang/Driver/Options.td b/include/clang/Driver/Options.td
index bcb6ec0a7d9287b763360f0685cb9e7e1ca8583e..977e925117b166a4b76085b1a86a749f02363064 100644 (file)
--- a/include/clang/Driver/Options.td
+++ b/include/clang/Driver/Options.td
@@ -1540,7 +1540,7 @@ def no_system_header_prefix : Joined<["--"], "no-system-header-prefix=">,
            "system header.">;
 def : Separate<["--"], "no-system-header-prefix">, Alias<no_system_header_prefix>;
 def s : Flag<["-"], "s">;
-def target : Joined<["--"], "target=">, Flags<[DriverOption, CoreOption]>,
+def target : Joined<["-", "--"], "target=">, Flags<[DriverOption, CoreOption]>,
   HelpText<"Generate code for the given target">;
 def gcc_toolchain : Joined<["--"], "gcc-toolchain=">, Flags<[DriverOption]>,
   HelpText<"Use the gcc toolchain at the given directory">;
@@ -1713,7 +1713,7 @@ def mv5 : Flag<["-"], "mv5">, Group<m_hexagon_Features_Group>, Alias<march_EQ>,
 // aliases for options that are spelled using the more common Unix / GNU flag
 // style of double-dash and equals-joined flags.
 def gcc_toolchain_legacy_spelling : Separate<["-"], "gcc-toolchain">, Alias<gcc_toolchain>;
-def target_legacy_spelling : Separate<["-"], "target">, Alias<target>;
+def target_legacy_spelling : Separate<["-", "--"], "target">, Alias<target>;
 
 // Special internal option to handle -Xlinker --no-demangle.
 def Z_Xlinker__no_demangle : Flag<["-"], "Z-Xlinker-no-demangle">,

diff --git a/test/Driver/target.c b/test/Driver/target.c
index a46ba16296a706aca8722b30980190f61a331b90..c7652ff62c9f9d1fa855fac089c26f8b4ed12b4c 100644 (file)
--- a/test/Driver/target.c
+++ b/test/Driver/target.c
@@ -7,3 +7,9 @@
 // Also check that the legacy spelling works.
 // RUN: %clang -no-canonical-prefixes -target unknown-unknown-unknown -c %s \
 // RUN:   -o %t.o -### 2>&1 | FileCheck %s
+//
+// RUN: %clang -no-canonical-prefixes -target=unknown-unknown-unknown -c %s \
+// RUN:   -o %t.o -### 2>&1 | FileCheck %s
+//
+// RUN: %clang -no-canonical-prefixes --target unknown-unknown-unknown -c %s \
+// RUN:   -o %t.o -### 2>&1 | FileCheck %s