From: Rafael Sadowski <rafael@sizeofvoid.org>
Subject: Re: clang.port.mk: fix detection of clang-scan-deps
To: ports@openbsd.org, phessler@openbsd.org,  Theo Buehler <tb@theobuehler.org>
Date: Tue, 7 Jul 2026 18:44:32 +0200

On Mon Jul 06, 2026 at 10:21:12AM +0200, Jeremie Courreges-Anglas wrote:
> 
> As reported by phessler:
> 
>   audio/openal: /bin/sh: /usr/local/bin/clang-scan-deps-22: not found
> 
> and as analyzed by tb:
> 
>   [cmake] walks the path with clang-scan-deps-22.1, then clang-scan-deps-22, then clang-scan-deps. so if llvm/22 is installed, that takes priority.
> 
> clang-scan-deps is detected in the same manner as ar and ranlib in
> /usr/local/share/cmake/Modules/Compiler/Clang-FindBinUtils.cmake so
> the diff below uses the same approach to force the use of the
> executable from base.  All our architectures with ports-clang also
> ship base-clang and thus clang-scan-deps, so while slightly incorrect
> I think this is good enough.
> 
> With this, the openal build no longer fails if llvm%22 is installed at
> configure time and then removed.  ok?
> 
> 
> Index: cmake.port.mk
> ===================================================================
> RCS file: /home/cvs/ports/devel/cmake/cmake.port.mk,v
> diff -u -p -r1.91 cmake.port.mk
> --- cmake.port.mk	13 May 2026 07:10:23 -0000	1.91
> +++ cmake.port.mk	6 Jul 2026 08:19:18 -0000
> @@ -165,6 +165,7 @@ _CMAKE_PROCESSING_LANGUAGE = ASM OBJCXX 
>  .for LANG in ${_CMAKE_PROCESSING_LANGUAGE}
>  CONFIGURE_ARGS :=	-DCMAKE_${LANG}_COMPILER_AR:FILEPATH=/usr/bin/ar \
>  			-DCMAKE_${LANG}_COMPILER_RANLIB:FILEPATH=/usr/bin/ranlib \
> +			-DCMAKE_${LANG}_COMPILER_CLANG_SCAN_DEPS:FILEPATH=/usr/bin/clang-scan-deps \
>  			${CONFIGURE_ARGS}
>  .endfor
>  
> -- 
> jca
> 

Now we end up with a longer list of use-less informations:

CMake Warning:
  Manually-specified variables were not used by the project:

    CMAKE_ASM_COMPILER_AR
    CMAKE_ASM_COMPILER_CLANG_SCAN_DEPS
    CMAKE_ASM_COMPILER_RANLIB
    CMAKE_Fortran_COMPILER_AR
    CMAKE_Fortran_COMPILER_CLANG_SCAN_DEPS
    CMAKE_Fortran_COMPILER_RANLIB
    CMAKE_OBJCXX_COMPILER_AR
    CMAKE_OBJCXX_COMPILER_CLANG_SCAN_DEPS
    CMAKE_OBJCXX_COMPILER_RANLIB
    CMAKE_OBJC_COMPILER_AR
    CMAKE_OBJC_COMPILER_CLANG_SCAN_DEPS
    CMAKE_OBJC_COMPILER_RANLIB
    PYTHON_EXECUTABLE
    PYTHON_INCLUDE_DIR
    PYTHON_LIBRARY_DIRS
    Python3_EXECUTABLE
    Python3_INCLUDE_DIR
    Python3_LIBRARY_DIRS

I dont think it makes sense to define this for objc, objcxx, c or even
Fortran.

Index: cmake.port.mk
===================================================================
RCS file: /cvs/ports/devel/cmake/cmake.port.mk,v
diff -u -p -r1.92 cmake.port.mk
--- cmake.port.mk	6 Jul 2026 09:22:29 -0000	1.92
+++ cmake.port.mk	7 Jul 2026 16:40:32 -0000
@@ -165,11 +165,11 @@ _CMAKE_PROCESSING_LANGUAGE = ASM OBJCXX 
 .for LANG in ${_CMAKE_PROCESSING_LANGUAGE}
 CONFIGURE_ARGS :=	-DCMAKE_${LANG}_COMPILER_AR:FILEPATH=/usr/bin/ar \
 			-DCMAKE_${LANG}_COMPILER_RANLIB:FILEPATH=/usr/bin/ranlib \
-			-DCMAKE_${LANG}_COMPILER_CLANG_SCAN_DEPS:FILEPATH=/usr/bin/clang-scan-deps \
 			${CONFIGURE_ARGS}
 .endfor
 
 CONFIGURE_ARGS :=	-DCMAKE_ADDR2LINE:FILEPATH=/usr/bin/addr2line \
+			-DCMAKE_CXX_COMPILER_CLANG_SCAN_DEPS:FILEPATH=/usr/bin/clang-scan-deps \
 			-DCMAKE_AR:FILEPATH=/usr/bin/ar \
 			-DCMAKE_NM:FILEPATH=/usr/bin/nm \
 			-DCMAKE_RANLIB:FILEPATH=/usr/bin/ranlib \