From: Theo Buehler <tb@theobuehler.org>
Subject: Re: cmake neuter LTO detection logic for ports-gcc
To: Rafael Sadowski <rafael@sizeofvoid.org>
Cc: ports@openbsd.org
Date: Mon, 26 Jan 2026 21:18:38 +0100

> > It seems the LTO flags are only in CMAKE_${lang}_COMPILE_OPTIONS_IPO but I
> > have not yet figured out where those are pulled into doxygen
> > 
> > -- 
> > :wq Claudio
> 
> I think you want this:

I just tested the equivalent diff that comments out the setting of IPO to true.

ok tb

> 
> diff --git a/devel/doxygen/Makefile b/devel/doxygen/Makefile
> index 757db6e1e65..34f787c3ab9 100644
> --- a/devel/doxygen/Makefile
> +++ b/devel/doxygen/Makefile
> @@ -3,6 +3,7 @@ COMMENT=        source code documentation generator tool
>  VERSION=       1.15.0
>  DISTNAME=      doxygen-${VERSION}.src
>  PKGNAME=       doxygen-${VERSION}
> +REVISION=      0
> 
>  CATEGORIES=    devel textproc
> 
> diff --git a/devel/doxygen/patches/patch-CMakeLists_txt b/devel/doxygen/patches/patch-CMakeLists_txt
> new file mode 100644
> index 00000000000..ad77afce3d0
> --- /dev/null
> +++ b/devel/doxygen/patches/patch-CMakeLists_txt
> @@ -0,0 +1,13 @@
> +Index: CMakeLists.txt
> +--- CMakeLists.txt.orig
> ++++ CMakeLists.txt
> +@@ -36,9 +36,6 @@ option(enable_coverage "Enable coverage reporting for
> + option(enable_tracing  "Enable tracing option in release builds [development]" OFF)
> + option(enable_lex_debug "Enable debugging info for lexical scanners in release builds [development]" OFF)
> +
> +-if(CMAKE_BUILD_TYPE STREQUAL "Release")
> +-  set(CMAKE_INTERPROCEDURAL_OPTIMIZATION TRUE)
> +-endif()
> +
> + include(CheckCXXCompilerFlag)
> +
>