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| author | Xin Tong <trent.xin.tong@gmail.com> | 2017-04-19 00:03:36 +0000 |
|---|---|---|
| committer | Xin Tong <trent.xin.tong@gmail.com> | 2017-04-19 00:03:36 +0000 |
| commit | 35e5e58dc5002b68821aaf336fd9e5df8d15a976 (patch) | |
| tree | 5997754107022c4a141d3ea4e0e2b987e231fb72 /CMakeLists.txt | |
| parent | 18daf4ef22525de16106b741f54865e8f7c4e270 (diff) | |
Allow suppressing host and target info in VersionPrinter
Summary:
VersionPrinter by default outputs information about the Host CPU
and Default target. Printing this information requires linking in
a large amount of data, such as supported target triples as C
strings, which in turn bloats the binary size.
Enable a new CMake option LLVM_VERSION_PRINTER_SHOW_HOST_TARGET_INFO
which controls printing of the host and target info. This allows
the target triple names to be dead-code stripped. This is a nice
win for LLVM clients that wish to minimize their binary size, such
as graphics drivers.
By default this is ON, so there is no change in the default behavior.
Clients who wish to suppress this printing can do so by setting this
option to off via CMake.
A test app on Linux that uses ParseCommandLineOptions() shows a binary
size reduction of 23KB (from 149K to 126K) for a Release build, and 24KB
(from 135K to 111K) in a MinSizeRel build.
Reviewers: klimek, beanz, bogner, chandlerc, compnerd
Reviewed By: compnerd
Patch by pammon (Peter Ammon) !
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D30904
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@300630 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'CMakeLists.txt')
| -rw-r--r-- | CMakeLists.txt | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt index b51bc421fdbf..2f5df776e9e0 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -512,6 +512,9 @@ set(LLVM_INSTALL_OCAMLDOC_HTML_DIR "share/doc/llvm/ocaml-html" option (LLVM_BUILD_EXTERNAL_COMPILER_RT "Build compiler-rt as an external project." OFF) +option (LLVM_VERSION_PRINTER_SHOW_HOST_TARGET_INFO + "Show target and host info when tools are invoked with --version." ON) + # You can configure which libraries from LLVM you want to include in the # shared library by setting LLVM_DYLIB_COMPONENTS to a semi-colon delimited # list of LLVM components. All component names handled by llvm-config are valid. |