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[CMAKE] MSVC cmake settings improvements.

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- Always use string pooling when building: this helps reducing the
  size of the binaries due to string redundancy coming from the usage
  of __FILE__ / __RELFILE__ in the debugging helper macros. Note also
  that GCC builds use string pooling by default.

- Use suitable add_compile_flags() command.
- Add some explanative comments for some settings.

Some numbers (obtained with my local builds):

Before / After => Reduction
===========================

freeldr.sys  :  443 KB (  453.632 bytes) /  364 KB (  372.736 bytes) => ~ 18%
win32k.sys   : 1877 KB (1.922.048 bytes) / 1562 KB (1.599.488 bytes) => ~ 17%
ntoskrnl.exe : 2253 KB (2.307.072 bytes) / 1902 KB (1.947.136 bytes) => ~ 15.6%
kernel32.dll : 3008 KB (3.080.192 bytes) / 2906 KB (2.975.744 bytes) => ~ 3.4%
This commit is contained in:
Hermès Bélusca-Maïto 2019-01-12 16:57:51 +01:00
parent 363f5f26b1
commit 5e673f3118
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3 changed files with 21 additions and 10 deletions
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2
sdk/cmake/config-amd64.cmake
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@ -6,7 +6,7 @@ set(OARCH "athlon64" CACHE STRING
"Generate instructions for this CPU type. Specify one of:
k8 opteron athlon64 athlon-fx")
set (OPTIMIZE "1" CACHE STRING
set(OPTIMIZE "1" CACHE STRING
"What level of optimization to use.
0 = off
1 = Default option, optimize for size (-Os) with some additional options