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Pengxuan Zheng c932a25d56 [cmake] Fix dependency issue in TableGen

Summary:
There is a bug in add_tablegen which causes cmake to fail with the following
error message if LLVM_TABLEGEN is set.

CMake Error at cmake/modules/TableGen.cmake:147 (add_dependencies):
  The dependency target "LLVM-tablegen-host" of target "CLANG-tablegen-host"
  does not exist.
Call Stack (most recent call first):
  tools/clang/utils/TableGen/CMakeLists.txt:3 (add_tablegen)

The issue happens because setting LLVM_TABLEGEN causes cmake to skip generating
the LLVM-tablegen-host target. As a result, a non-existent target was added for
CLANG-tablegen-host causing cmake to fail.

In order to fix this issue, this patch adds a guard to check the validity of the
dependency target before adding it as a dependency.

Reviewers: aganea, smeenai

Reviewed By: aganea

Subscribers: mgorny, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D60576

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@358226 91177308-0d34-0410-b5e6-96231b3b80d8

2019-04-11 21:05:15 +00:00

modules

[cmake] Fix dependency issue in TableGen

2019-04-11 21:05:15 +00:00

platforms

[NFC][CMake] Improve Status message in the iOS toolchain file

2019-03-13 15:35:21 +00:00

config-ix.cmake

Remove HAVE_REALPATH from config.h

2019-03-20 17:26:11 +00:00

config.guess

Remove Bitrig: LLVM Changes

2017-07-21 22:48:47 +00:00

dummy.cpp

[CMake] Fix Xcode build with LLVM_ENABLE_OBJLIB.

2015-09-10 17:18:51 +00:00

nsis_icon.ico

Win installer: provide a pretty icon

2014-03-27 20:48:37 +00:00

nsis_logo.bmp

CMake: polish the Windows packaging rules

2013-08-15 23:44:31 +00:00

README

CMake: Added notes pointing to the LLVM CMake documentation.

2009-04-04 22:52:02 +00:00

README

See docs/CMake.html for instructions on how to build LLVM with CMake.