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For those using SAGA together with QGIS: SAGA nowadays comes with an Interface Creator for QGIS. To use it compile SAGA with

-DWITH_DEV_TOOLS:BOOL=ON

and run

saga_cmd dev_tools 7

There's a readme where to put the generated files. Works nicely with the saga_processing_nextgen plugin.

@sptzmllr works now. Thanks for reporting the bug.

@dobedobedo This error only occurs with the cuda (opencv-cuda) version of opencv. I reported a bug. Now you can either just use opencv or wait until opencv-cuda is fixed.

@sptzmllr No, I didn't have it ; I've just done a fresh re-installation of manjaro, and it didn't come installed by default.

I found it in the official repositories (core)

https://packages.manjaro.org/?query=base-devel

Thank you for your help, I appreciate it! It's now installed.

@Slug Do you have the package base-devel installed? From a quick search it seems this errors occurs if no compiler is present. base-devel will install autotools, make, gcc etc.

I had this error trying to build in manjaro 23.0.0

-> Extracting saga-9.0.2.tar.gz with bsdtar

==> Starting build()...

CMake Error: CMake was unable to find a build program corresponding to "Unix Makefiles". CMAKE_MAKE_PROGRAM is not set. You probably need to select a different build tool.

CMake Error: CMAKE_C_COMPILER not set, after EnableLanguage

CMake Error: CMAKE_CXX_COMPILER not set, after EnableLanguage

-- Configuring incomplete, errors occurred!

==> ERROR: A failure occurred in build().

Cannot build saga-gis due to incompatible cuda version:

正在啟動 build()...
-- The C compiler identification is GNU 13.1.1
-- The CXX compiler identification is GNU 13.1.1
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- folder: saga
-- Set default build type to Release
missing Git repository
GIT_BRANCH:         unknown
VERSON_STRING:      9.0.2
VERSON_FULL_STRING: 9.0.2-0+0
-- compile with OpenMP optimizations
-- folder: src
-- folder: accessories
-- folder: saga_core
-- Found wxWidgets: -pthread;-lwx_gtk3u_xrc-3.2;-lwx_gtk3u_html-3.2;-lwx_gtk3u_qa-3.2;-lwx_gtk3u_core-3.2;-lwx_baseu_xml-3.2;-lwx_baseu_net-3.2;-lwx_baseu-3.2 (found version "3.2.2") 
-- project: saga_api
-- Found wxWidgets: -pthread;-lwx_baseu-3.2;-lwx_baseu_net-3.2;-lwx_baseu_xml-3.2;-lwx_gtk3u_html-3.2 (found version "3.2.2") 
-- SWIG for Python found
-- Found Python: /usr/bin/python3.11 (found version "3.11.3") found components: Interpreter Development Development.Module Development.Embed 
-- project: saga_api
-- Python found
-- Python site-packages: 
-- project: saga_cmd
-- subfolder: saga_cmd/man
-- project: saga_gdi
-- project: saga_gui
-- Found Git: /usr/bin/git (found version "2.41.0") 
not a git repository, git hash not found
-- subfolder: saga_gui/man
-- subfolder: saga_gui/res
-- folder: tools
-- configure tool: climate_tools
-- configure tool: contrib_perego
-- Found ODBC: /usr/lib/libodbc.so  
-- configure tool: db_odbc
-- Found PostgreSQL: /usr/lib/libpq.so
-- configure tool: db_pgsql
-- configure tool: docs_html
-- configure tool: docs_pdf
-- configure tool: garden_fractals
-- configure tool: garden_games
-- configure tool: garden_webservices
-- configure tool: grid_analysis
-- configure tool: grid_calculus
-- configure tool: grid_calculus_bsl
-- configure tool: grid_filter
-- configure tool: grid_gridding
-- configure tool: grid_spline
-- configure tool: grid_tools
-- configure tool: grid_visualisation
-- configure tool: grids_tools
-- configure tool: imagery_classification
-- configure tool: imagery_isocluster
-- configure tool: imagery_maxent
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Success
-- Found Threads: TRUE  
CMake Error at /usr/share/cmake/Modules/FindPackageHandleStandardArgs.cmake:230 (message):
  Could NOT find CUDA: Found unsuitable version "12.2", but required is exact
  version "12.1" (found /opt/cuda)
Call Stack (most recent call first):
  /usr/share/cmake/Modules/FindPackageHandleStandardArgs.cmake:598 (_FPHSA_FAILURE_MESSAGE)
  /usr/share/cmake/Modules/FindCUDA.cmake:1268 (find_package_handle_standard_args)
  /usr/lib/cmake/opencv4/OpenCVConfig.cmake:86 (find_package)
  /usr/lib/cmake/opencv4/OpenCVConfig.cmake:108 (find_host_package)
  src/tools/imagery/imagery_opencv/CMakeLists.txt:32 (find_package)


-- Configuring incomplete, errors occurred!

@gds506 Thanks for notifying me about the issue. But the downgrade from clipper 2 to clipper 1 is not a viable solution. The issue is connected this Bug and is fixed upstream. I backported a patch for 9.0.1.

I had issues installing due to the C++ version cmake was using by default. It was conflicting with the "Clipper 2" requirements (C++ > 17) I fixed it changing the PKGBUILD cmake Clipper line to

 -DWITH_CLIPPER_ONE:BOOL=ON