Re: A strange cmake problem

Ionen Wolkens <[email protected]> Sun, 21 Jun 2026 02:45:29 -0400

Newsgroups	gmane.linux.gentoo.devel
Message-ID	<ajeIiRzB_MspZmrd@eversor>

On Sun, Jun 21, 2026 at 06:18:43AM +0000, Andrey Grozin wrote:
> Hello *,
> 
> I'm trying to bump wxmaxima to 26.06.2. Renaming 
> wxmaxima-26.05.0-r1.ebuild -> wxmaxima-26.06.2.ebuild should work. But I 
> get
> 
> CMake Error at data/CMakeLists.txt:47 (add_custom_command):
>    add_custom_command called with wrong number of arguments.
> 
> The relevant part of data/CMakeLists.txt is
> 
>      # Compress man pages
>      add_custom_command(
>          OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/wxmaxima.1.gz"
>          COMMAND gzip -cn9 "${CMAKE_CURRENT_BINARY_DIR}/wxmaxima.1" > "${CMAKE_CURRENT_BINARY_DIR}/wxmaxima.1.gz"
>          DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/wxmaxima.1"
>          COMMENT "Compressing man page"
>      )
>      add_custom_target(generate_man ALL DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/wxmaxima.1.gz")

If you tried without the ebuild, it probably works fine because the
problem is in the ebuild that you renamed itself, not cmake.

It has a sed that modifies data/CMakeLists.txt depending on LINGUAS (po)
and then the de/wxmaxima.1 command becomes:

    add_custom_command(
        COMMENT "Compressing German man page"
    )

Which is clearly wrong.
-- 
ionen

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