CMake Build Problem

[Kornel Benko]

Am Mon, 16 Dec 2019 20:36:58 -0500
schrieb Scott Kostyshak <skostysh at lyx.org>:

> On Mon, Dec 16, 2019 at 08:11:16PM -0500, Richard Kimberly Heck wrote:
> > I'm getting a repeatable error when building the master branch of LyX
> > with cmake on Fedora 30. What I've done is:
> > 
> > ./autogen.sh
> > mkdir build-cmake
> > cd build-cmake
> > cmake ..
> > make
> > 
> > Result:  
> 
> Kornel can advise, but I think it is recommended to use an out-of-source
> build directory. Also, I don't think you should run autogen.sh.

Yes.

> So
> something like:
> 
> mkdir ../build-cmake &&
> cd ../build-cmake &&
> cmake ../your-src-dir-name &&
> make
> 
> Scott

Also the compiler tries to use
	-flto -fno-fat-lto-objects
From 'man gcc'
	Note that when -fno-fat-lto-objects is enabled the
           compile stage is faster but you cannot perform a regular, non-LTO
           link on them.
To disable this, use some extra cmake parameter
	$ cmake your-src-dir-name -DLYX_DEBUG=ON -DLYX_RELEASE=OFF -DLYX_CPACK=ON
	$ make package

-DLYX_DEBUG=ON #  Compile with debug info (without lto)
-DLYX_RELEASE=OFF # Compile debug version
-DLYX_CPACK=ON # implicitly create everything needed for installation,
	not only the lyx executable

I cannot see the wrong behaviour here with gcc8.3 and cmake1.16

What is your cmake version?
What is your gcc version?

	Kornel
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