Re: local build problem on Windows

On Tue, 11 May 2021 at 21:02, Leland <[email protected]> wrote:

> Patch is attached.  I don’t feel like hassling with a pull request just
> for this…times are a changing.  😊
>

thanks, I can confirm that this fixes the problem on Windows,
David.


>
>
> diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
>
> index 3ff5911fb..e3443ce81 100644
>
> --- a/src/CMakeLists.txt
>
> +++ b/src/CMakeLists.txt
>
> @@ -1316,7 +1316,15 @@ if( CMAKE_VERSION VERSION_GREATER_EQUAL "3.16" AND
> NOT CCACHE_PROGRAM )
>
>
>
>     if( ${_OPT}use_pch )
>
>        message( STATUS "Using precompiled headers" )
>
> -      target_precompile_headers( ${TARGET} PRIVATE AudacityHeaders.h )
>
> +      target_precompile_headers( ${TARGET}
>
> +         PRIVATE
>
> +            # The way CMake generates the project file on Windows, the
> normal
>
> +            # "force include" of configwin.h will happen AFTER
> AudacityHeaders.h
>
> +            # is included.  So, anything depending on the configwin.h
> variables
>
> +            # will not be properly defined.
>
> +
> $<$<CXX_COMPILER_ID:MSVC>:"${CMAKE_BINARY_DIR}/src/private/configwin.h">
>
> +            AudacityHeaders.h
>
> +      )
>
>     else()
>
>        message( STATUS "Not using precompiled headers" )
>
>     endif()
>
>
>
>
>
>
>
> *From:* Leland <[email protected]>
> *Sent:* Tuesday, May 11, 2021 1:12 PM
> *To:* [email protected]
> *Subject:* Re: [Audacity-devel] local build problem on Windows
>
>
>
> Honestly, I don’t know what’s going on.  It builds if I configure with:
>
>
>
> cmake -Daudacity_use_pch=no
>
>
>
> It doesn’t build if I configure with:
>
>
>
> cmake -Daudacity_use_pch=yes
>
>
>
> I thought I understood why, but every “workaround” I’ve tried so far has
> failed…grrrrrr
>
>
>
> *From:* Leland <[email protected]>
> *Sent:* Tuesday, May 11, 2021 1:02 PM
> *To:* [email protected]
> *Subject:* Re: [Audacity-devel] local build problem on Windows
>
>
>
> Hold off…this may be incorrect.  Still digging.
>
>
>
> *From:* Leland <[email protected]>
> *Sent:* Tuesday, May 11, 2021 12:44 PM
> *To:* [email protected]
> *Subject:* Re: [Audacity-devel] local build problem on Windows
>
>
>
> Paul, the problem is that using “/FI” to force include configwin.h
> overrides the method used by CMake to include the precompiled headers. I’m
> trying to devise some sort of workaround, but I don’t think it’s gonna be
> pretty.
>
>
>
> *From:* Leland <[email protected]>
> *Sent:* Tuesday, May 11, 2021 11:35 AM
> *To:* [email protected]
> *Subject:* Re: [Audacity-devel] local build problem on Windows
>
>
>
> Yea, it broke the use of precompiled headers on Windows.  Looking into it…
>
>
>
> *From:* David Bailes <[email protected]>
> *Sent:* Tuesday, May 11, 2021 3:50 AM
> *To:* Audacity Development <[email protected]>
> *Subject:* [Audacity-devel] local build problem on Windows
>
>
>
> Problems with my local build, using VS 2019, and using VS's cmake, as in
> the build instructions in win/build.txt.
>
> Starting with the recent commit: 794f4e5877195e28afb230f2cdff166410fd5e37,
>
> I'm getting the build errors shown below,
>
> David.
>
>
>
>     cmake_pch.cxx
> U:\audacity\src\AudioIO.h(95,24): error C3646: 'midiTracks': unknown
> override specifier
> U:\audacity\src\AudioIO.h(95,34): error C4430: missing type specifier -
> int assumed. Note: C++ does not support default-int
> U:\audacity\src\AudioIO.h(270,16): error C3646: 'MidiTime': unknown
> override specifier
> U:\audacity\src\AudioIO.h(270,24): error C2059: syntax error: '('
> U:\audacity\src\AudioIO.h(270,26): error C2238: unexpected token(s)
> preceding ';'
> U:\audacity\src\AudioIO.h(368,20): error C2143: syntax error: missing ';'
> before '*'
> U:\audacity\src\AudioIO.h(368,20): error C4430: missing type specifier -
> int assumed. Note: C++ does not support default-int
> U:\audacity\src\AudioIO.h(368,32): error C2238: unexpected token(s)
> preceding ';'
> U:\audacity\src\AudioIO.h(392,16): error C3646: 'mMaxMidiTimestamp':
> unknown override specifier
> U:\audacity\src\AudioIO.h(392,33): error C4430: missing type specifier -
> int assumed. Note: C++ does not support default-int
> U:\audacity\src\AudioIO.h(415,17): error C2143: syntax error: missing ';'
> before '*'
> U:\audacity\src\AudioIO.h(415,17): error C4430: missing type specifier -
> int assumed. Note: C++ does not support default-int
> U:\audacity\src\AudioIO.h(415,22): error C2238: unexpected token(s)
> preceding ';'
> U:\audacity\src\AudioIO.h(416,20): error C2065: 'Alg_iterator': undeclared
> identifier
> U:\audacity\src\AudioIO.h(416,9): error C2923: 'std::unique_ptr':
> 'Alg_iterator' is not a valid template type argument for parameter '_Ty'
> U:\audacity\src\AudioIO.h(416,9): error C2976: 'std::unique_ptr': too few
> template arguments
>   C:\Program Files (x86)\Microsoft Visual
> Studio\2019\Community\VC\Tools\MSVC\14.28.29910\include\memory(3319):
> message : see declaration of 'std::unique_ptr'
> [U:\audacity\out\build\x86-Debug\src\Audacity.vcxproj]
> U:\audacity\src\AudioIO.h(418,17): error C2143: syntax error: missing ';'
> before '*'
> U:\audacity\src\AudioIO.h(418,17): error C4430: missing type specifier -
> int assumed. Note: C++ does not support default-int
> U:\audacity\src\AudioIO.h(418,28): error C2238: unexpected token(s)
> preceding ';'
> U:\audacity\src\AudioIO.h(428,21): error C2143: syntax error: missing ';'
> before '*'
> U:\audacity\src\AudioIO.h(428,21): error C4430: missing type specifier -
> int assumed. Note: C++ does not support default-int
> U:\audacity\src\AudioIO.h(428,37): error C2238: unexpected token(s)
> preceding ';'
> U:\audacity\src\AudioIO.h(434,24): error C3646: 'mMidiPlaybackTracks':
> unknown override specifier
> U:\audacity\src\AudioIO.h(434,43): error C4430: missing type specifier -
> int assumed. Note: C++ does not support default-int
>
> Build All failed.
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