CMake: cofigure failure (Windows)

[Kornel Benko]

Am Sun, 15 Nov 2020 16:47:36 +0100
schrieb Yu Jin <yu_jin at lyx.org>:

> Am So., 15. Nov. 2020 um 16:34 Uhr schrieb Yu Jin <yu_jin at lyx.org>:
> 
> > Am So., 15. Nov. 2020 um 16:03 Uhr schrieb Kornel Benko <kornel at lyx.org>:
> >
> >> Am Sun, 15 Nov 2020 15:08:43 +0100
> >> schrieb Yu Jin <yu_jin at lyx.org>:
> >>
> >> > > You have to investigate the cmake module FomdPerl.cmake.
> >> > > It may help, if you use HINTS, for instance for path D:\xxxx
> >> > >         find_package(Perl REQUIRED PATHS "D:\\xxxx")
> >> > >
> >> > > At least, this one works on linux too.
> >> > >
> >> > Uhm, ist it possible that CMake looks for a CMake configuration file
> >> for perl and not
> >> > the perl.exe? I get this with your proposal:
> >> >
> >> > CMake Error at CMakeLists.txt:1216 (find_package):
> >> >   Could not find a package configuration file provided by "Perl" with
> >> any of
> >> >   the following names:
> >> >
> >> >     PerlConfig.cmake
> >> >     perl-config.cmake
> >> >
> >> >   Add the installation prefix of "Perl" to CMAKE_PREFIX_PATH or set
> >> >   "Perl_DIR" to a directory containing one of the above files.  If
> >> "Perl"
> >> >   provides a separate development package or SDK, be sure it has been
> >> >   installed.
> >> >
> >> >
> >> > Content of FindPerl.cmake:
> >> >
> >> > # Distributed under the OSI-approved BSD 3-Clause License.  See
> >> accompanying
> >> > # file Copyright.txt or https://cmake.org/licensing for details.
> >> >
> >>
> >> The module FindPerl.cmake is the same as here. Also I don't have neither
> >> PerlConfig.cmake nor perl-config.cmake anywhere on my system. So I
> >> wonder, why
> >> your cmake does not use this module. Could You add some message(STATUS
> >> ...) inside the
> >> module?
> >>
> >> You could copy FindPerl.cmake to our development/cmake/modules and modify
> >> there too.
> >>
> >
> > Added the messages, it uses this module when I don't modify
> > CMakeLists.txt. But when I add the PATHS part to the find_package command,
> > this module is not used anymore, the messages don't show up.
> >
> What works though is to add the path to perl to CMAKE_PREFIX_PATH, I just
> added "C:/lyx/lyx-windows-deps-msvc2019_64/perl",
> "C:/lyx/lyx-windows-deps-msvc2019_64" used to be the GNUWIN32_DIR earlier.

Nice. I would add it to some extra module guarded by 'if(WIN32)'

	Kornel
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