speeding up use of first static library
I'm using VC++ 2010 express + windows sdk on win7 64 Home Premium (Phenom 8450 4Gb Ram).
I just created my first static library which is sqlite3.c in 64bit guise.
To test it I used a std win32 project...albeit changed into an x64/debug project
with precompiled headers and using the windows sdk platform toolset for 64bit compilation.
I only added a couple of lines to the auto-generated .cpp file test the sqlite library.
Whilst the test "worked"...building it took 30seconds.
Is this normal?
I got these messages but at the moment they don't mean much to me.
I'd welcome any advice re speeding things up...if possible.
Thank you in anticipation.
Code:
1>------ Rebuild All started: Project: test_sqlite64, Configuration: Debug x64 ------
1> stdafx.cpp
1> test_sqlite64.cpp
1> sqlite64.lib(sqlite3.obj) : MSIL .netmodule or module compiled with /GL found; restarting link with /LTCG; add /LTCG to the link command line to improve linker performance
1>LINK : warning LNK4075: ignoring '/INCREMENTAL' due to '/LTCG' specification
1>LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library
1> Generating code
1> Finished generating code
1> test_sqlite64.vcxproj -> C:\Users\me\documents\visual studio 2010\Projects\test_sqlite64\x64\Debug\test_sqlite64.exe
1> sqlite64.lib(sqlite3.obj) : MSIL .netmodule or module compiled with /GL found; restarting link with /LTCG; add /LTCG to the link command line to improve linker performance
1>LINK : warning LNK4075: ignoring '/INCREMENTAL' due to '/LTCG' specification
1>LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library
1> Generating code
1> Finished generating code
1> test_sqlite64.vcxproj -> C:\Users\me\documents\visual studio 2010\Projects\test_sqlite64\x64\Debug\test_sqlite64.exe
========== Rebuild All: 1 succeeded, 0 failed, 0 skipped ==========
It looks like I should remove '/INCREMENTAL'.
I did with
Properties/linker/general.../INCREMENTAL No!
and now get this
Code:
1>------ Rebuild All started: Project: test_sqlite64, Configuration: Debug x64 ------
1> stdafx.cpp
1> test_sqlite64.cpp
1> sqlite64.lib(sqlite3.obj) : MSIL .netmodule or module compiled with /GL found; restarting link with /LTCG; add /LTCG to the link command line to improve linker performance
1>LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library
1> Generating code
1> Finished generating code
1> test_sqlite64.vcxproj -> C:\Users\me\documents\visual studio 2010\Projects\test_sqlite64\x64\Debug\test_sqlite64.exe
========== Rebuild All: 1 succeeded, 0 failed, 0 skipped ==========
I found
Linker/Input/Ignore specific default libraries
and added MSVCRT to it
I now get...
Code:
1>------ Rebuild All started: Project: test_sqlite64, Configuration: Debug x64 ------
1> stdafx.cpp
1> test_sqlite64.cpp
1> sqlite64.lib(sqlite3.obj) : MSIL .netmodule or module compiled with /GL found; restarting link with /LTCG; add /LTCG to the link command line to improve linker performance
1> Generating code
1> Finished generating code
1> test_sqlite64.vcxproj -> C:\Users\me\documents\visual studio 2010\Projects\test_sqlite64\x64\Debug\test_sqlite64.exe
========== Rebuild All: 1 succeeded, 0 failed, 0 skipped ==========
I added "/GL /LTCG" to properties/linker/command line/additional options and press apply/ok and get this...
Code:
I added 1>------ Rebuild All started: Project: test_sqlite64, Configuration: Debug x64 ------
1>cl : Command line warning D9002: ignoring unknown option '/LTCG'
1> stdafx.cpp
1>cl : Command line warning D9002: ignoring unknown option '/LTCG'
1> test_sqlite64.cpp
1> stdafx.obj : MSIL .netmodule or module compiled with /GL found; restarting link with /LTCG; add /LTCG to the link command line to improve linker performance
1> Generating code
1> Finished generating code
1> test_sqlite64.vcxproj -> C:\Users\me\documents\visual studio 2010\Projects\test_sqlite64\x64\Debug\test_sqlite64.exe
========== Rebuild All: 1 succeeded, 0 failed, 0 skipped ==========
It's now taking 15 seconds i.e. 1/2 the time.
BTW Why is the compiler asking me to add /LTCG and then not recognising it?
http://msdn.microsoft.com/en-us/libr...=vs.60%29.aspx
suggests replacing or adding to 'MSVCRT' the phrase /NODEFAULTLIB:MSVCRT
The link also mentions this
Code:
"different types or debug and non-debug versions of the run-time library in the same program"
My static lib was compiled as a RELEASE x64 whereas the test project is a DEBUG x64. Is this ok?
