[llvm] r290271 - cmake: Don't build llvm-config and tblgen concurrently in cross builds

[Justin Bogner via llvm-commits]

Author: bogner
Date: Wed Dec 21 15:19:00 2016
New Revision: 290271

URL: http://llvm.org/viewvc/llvm-project?rev=290271&view=rev
Log:
cmake: Don't build llvm-config and tblgen concurrently in cross builds

This sets USES_TERMINAL for the native llvm-config build, so that it
doesn't run at the same time as builds of other native tools (namely,
tablegen). Without this, if you're very unlucky with the timing it's
possible to be relinking libSupport as one of the tools is linking,
causing a spurious failure.

The tablegen build adopted USES_TERMINAL for this same reason in
r280748.

Modified:
    llvm/trunk/tools/llvm-config/CMakeLists.txt

Modified: llvm/trunk/tools/llvm-config/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/llvm-config/CMakeLists.txt?rev=290271&r1=290270&r2=290271&view=diff
==============================================================================
--- llvm/trunk/tools/llvm-config/CMakeLists.txt (original)
+++ llvm/trunk/tools/llvm-config/CMakeLists.txt Wed Dec 21 15:19:00 2016
@@ -69,7 +69,8 @@ if(CMAKE_CROSSCOMPILING)
     COMMAND ${CMAKE_COMMAND} --build . --target llvm-config --config $<CONFIGURATION>
     DEPENDS ${LLVM_NATIVE_BUILD}/CMakeCache.txt
     WORKING_DIRECTORY ${LLVM_NATIVE_BUILD}
-    COMMENT "Building native llvm-config...")
+    COMMENT "Building native llvm-config..."
+    USES_TERMINAL)
   add_custom_target(${project}NativeLLVMConfig DEPENDS ${${project}_LLVM_CONFIG_EXE})
   add_dependencies(${project}NativeLLVMConfig CONFIGURE_LLVM_NATIVE)