diff options
| author | Yuhang Zhao <2546789017@qq.com> | 2021-11-19 11:05:10 +0800 |
|---|---|---|
| committer | Yuhang Zhao <2546789017@qq.com> | 2021-12-15 13:02:39 +0800 |
| commit | d2a0202cdab5827d3e6e25c4d1fcb30afbb12e16 (patch) | |
| tree | 0472b4397745794e8fe31f26da0c6ed5cb091d7b /cmake/QtInternalTargets.cmake | |
| parent | 877d6cf6f646cae88aa69c42eaf7ba1780269c87 (diff) | |
MSVC: Optimize global data to reduce binary size
Package global data in COMDAT sections for optimization.
According to the docs, this can significantly reduce the
size of the resulting binary executable.
I've tested build Qt with /Gw locally with and without
LTCG, the result shows /Gw can reduce the binary size
indeed, but not "significantly". The result also reveals
that exes can benefit much more from /Gw than dlls.
The result can be seen from the QTBUG-98894 bug report.
Microsoft Docs:
https://docs.microsoft.com/en-us/cpp/build/reference/gw-optimize-global-data?view=msvc-170
Task-number: QTBUG-98894
Change-Id: Ibce34c98e791e519d669a5fe39c0027d1459c382
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Kai Koehne <kai.koehne@qt.io>
Diffstat (limited to 'cmake/QtInternalTargets.cmake')
| -rw-r--r-- | cmake/QtInternalTargets.cmake | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/cmake/QtInternalTargets.cmake b/cmake/QtInternalTargets.cmake index aee33c5dde..fc98e6215d 100644 --- a/cmake/QtInternalTargets.cmake +++ b/cmake/QtInternalTargets.cmake @@ -199,7 +199,7 @@ if (MSVC) target_compile_options(PlatformCommonInternal INTERFACE -Zc:wchar_t) target_compile_options(PlatformCommonInternal INTERFACE - $<$<NOT:$<CONFIG:Debug>>:-guard:cf> + $<$<NOT:$<CONFIG:Debug>>:-guard:cf -Gw> ) target_link_options(PlatformCommonInternal INTERFACE |