MinGW on Windows: cmake arguments to find wxWidgets? - cmake

Question

Similar questions already exist but I haven't found an answer that works.
I need to build a wxWidgets project in Windows using MinGW, I would like to use the cmake command from the command line (I installed mingw, cmake and bash using chocolatey)
I would like to avoid compiling wxWidgets so I am using the pre-built binaries MinGW-w64 10.2 (Headers + Dev x64 + Release x64), I unpack them to C:\wxWidgets-3.1.5
I've tried a number of combinations of arguments for cmake but haven't found one that works on the first run, I say first run because I've found one that works on the second:
cmake .. -G "MinGW Makefiles" \
-DwxWidgets_ROOT_DIR=/c/wxWidgets-3.1.5/ \
-DwxWidgets_LIB_DIR=/c/wxWidgets-3.1.5/lib/gcc1020_x64_dll/
I am not a cmake expert but I imagine that by specifying these arguments in the first run they are cached and in the second run they are used, bypassing the search.
What I would like to know is what arguments I have to give to get them to be found correctly, _CONFIGURATION, _ROOT_DIR, _LIBRARIES, _INCLUDE_DIRS don't seem to have any effect.
↓ edit ↓
CMakelists.txt:
cmake_minimum_required(VERSION 3.18)
project(Test)
set(wxWidgets_USE_LIBS)
find_package(wxWidgets REQUIRED)
if(wxWidgets_FOUND)
include(${wxWidgets_USE_FILE})
add_executable(MyTest WIN32 main.cpp)
target_link_libraries(MyTest ${wxWidgets_LIBRARIES})
else(wxWidgets_FOUND)
message("wxWidgets not found!")
endif(wxWidgets_FOUND)
command line used:
cmake .. -G "MinGW Makefiles" -DwxWidgets_ROOT_DIR=/c/wxWidgets-3.1.5/ -DwxWidgets_LIB_DIR=/c/wxWidgets-3.1.5/lib/gcc1020_x64_dll/ -DwxWidgets_wxrc_EXECUTABLE=/c/wxWidgets-3.1.5/lib/gcc1020_x64_dll/wxrc.exe -DCMAKE_BUILD_TYPE=Release -DwxWidgets_LIBRARIES=/c/wxWidgets-3.1.5/lib/gcc1020_x64_dll/ -DwxWidgets_INCLUDE_DIRS=/c/wxWidgets-3.1.5/include/
first run:
-- The C compiler identification is GNU 10.2.0
-- The CXX compiler identification is GNU 10.2.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: C:/ProgramData/chocolatey/bin/gcc.exe - 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: C:/ProgramData/chocolatey/bin/g++.exe - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Could NOT find wxWidgets (missing: wxWidgets_LIBRARIES wxWidgets_INCLUDE_DIRS core base)
-- Configuring done
-- Generating done
-- Build files have been written to: C:/Users/Alex/Documents/Progetti/wx-test/build
wxWidgets not found!
second run:
-- Found wxWidgets: debug;C:/wxWidgets-3.1.5/lib/gcc1020_x64_dll/libwxmsw31ud_core.a;optimized;C:/wxWidgets-3.1.5/lib/gcc1020_x64_dll/libwxmsw31u_core.a;debug;C:/wxWidgets-3.1.5/lib/gcc1020_x64_dll/libwxbase31ud.a;optimized;C:/wxWidgets-3.1.5/lib/gcc1020_x64_dll/libwxbase31u.a;debug;C:/wxWidgets-3.1.5/lib/gcc1020_x64_dll/libwxbase31ud_net.a;optimized;C:/wxWidgets-3.1.5/lib/gcc1020_x64_dll/libwxbase31u_net.a;debug;C:/wxWidgets-3.1.5/lib/gcc1020_x64_dll/libwxpngd.a;optimized;C:/wxWidgets-3.1.5/lib/gcc1020_x64_dll/libwxpng.a;debug;C:/wxWidgets-3.1.5/lib/gcc1020_x64_dll/libwxtiffd.a;optimized;C:/wxWidgets-3.1.5/lib/gcc1020_x64_dll/libwxtiff.a;debug;C:/wxWidgets-3.1.5/lib/gcc1020_x64_dll/libwxjpegd.a;optimized;C:/wxWidgets-3.1.5/lib/gcc1020_x64_dll/libwxjpeg.a;debug;C:/wxWidgets-3.1.5/lib/gcc1020_x64_dll/libwxzlibd.a;optimized;C:/wxWidgets-3.1.5/lib/gcc1020_x64_dll/libwxzlib.a;debug;C:/wxWidgets-3.1.5/lib/gcc1020_x64_dll/libwxregexud.a;optimized;C:/wxWidgets-3.1.5/lib/gcc1020_x64_dll/libwxregexu.a;debug;C:/wxWidgets-3.1.5/lib/gcc1020_x64_dll/libwxexpatd.a;optimized;C:/wxWidgets-3.1.5/lib/gcc1020_x64_dll/libwxexpat.a;winmm;comctl32;uuid;oleacc;uxtheme;rpcrt4;shlwapi;version;wsock32 (found version "3.1.5") found components: core base net png tiff jpeg zlib regex expat
-- Configuring done
-- Generating done
-- Build files have been written to: C:/Users/Alex/Documents/Progetti/wx-test/build
if I use find_package(wxWidgets REQUIRED):
CMake Error at C:/Program Files/CMake/share/cmake-3.21/Modules/FindPackageHandleStandardArgs.cmake:230 (message):
Could NOT find wxWidgets (missing: wxWidgets_LIBRARIES
wxWidgets_INCLUDE_DIRS)
Call Stack (most recent call first):
C:/Program Files/CMake/share/cmake-3.21/Modules/FindPackageHandleStandardArgs.cmake:594 (_FPHSA_FAILURE_MESSAGE)
C:/Program Files/CMake/share/cmake-3.21/Modules/FindwxWidgets.cmake:1025 (find_package_handle_standard_args)
CMakeLists.txt:24 (find_package)

Answer 1

Thanks to Process Monitor I noticed that FindwxWidgets.cmake looks for libraries in gcc_dll/ (not gcc2010_x64_dll/), once the directory was renamed cmake -G "MinGW Makefiles" -DwxWidgets_ROOT_DIR=/c/wxWidgets-3.1.5 was enough to find the directory on the first run.