problems building using cmake on Windows with Qt6.11, error compiling refdlg.cpp

[tjwilli58]

I'm trying to build rtklib using cmake and Visual Studio 2026 (started with 2022, then updated)). I'm running into a few issues. I'm trying to build from main from commit

Merge pull request #887 from ourairquality/msc-strtok

win32 use strtok_s for strtok_r
Date:		1 week ago (6/7/2026 13:21:08)
commit hash 57d39e7

OS:

Edition	Windows 10 Enterprise
Version	22H2
Installed on	‎6/‎6/‎2023
OS Build	19045.6456

CMakeCache.txt

Following the `readme.txt file:

1) create a build directory
 > mkdir build
 > cd build/
2) setup CMake project
 > cmake ..

Qt was found and the project was built. However, not everything was built with
cmake --build .

(I don't have make on this system.)

I also commented out the tests from CMakeLists.txt because of errors with missing libraries libm, libblas, and liblapack. This belongs in a separate issue.

# tests
#add_subdirectory(test)

rnx2rtkp.exe and pos2kml.exe get built and put in .../bin/Debug (also ../bin/Release with --config Release ) , but not convbin.exe.

MSBuild version 18.7.8+1ac568fee for .NET Framework

  rtklib.vcxproj -> C:\FieldSoftware\GPS_Software\rtklibexplorer\RTKLIB\lib\Debug\rtklib.dll
convbin.obj : error LNK2019: unresolved external symbol gmtime_r referenced in function get_filetime [C:\FieldSoftware\GPS_Software\rtklibexplorer\RTKLIB\build\app\consapp\convbin.vcxproj]
C:\FieldSoftware\GPS_Software\rtklibexplorer\RTKLIB\bin\Debug\convbin.exe : fatal error LNK1120: 1 unresolved externals [C:\FieldSoftware\GPS_Software\rtklibexplorer\RTKLIB\build\app\consapp\convbin.vcxproj]

Also, these qtapps don't get built:

• rtknavi_qt
• rtkplot_qt
• rtkpost_qt
• strsvr_qt

The error is the same, so I'll only post for rtknavi_qt:

C:\FieldSoftware\GPS_Software\rtklibexplorer\RTKLIB\app\qtapp\appcmn_qt\refdlg.cpp(126,65): error C2445: result type of conditional expression is ambiguous: types 'const T' and 'const char [1]' can be converted to multiple common types [C:\FieldSoftware\GPS_Software\rtklibexplorer\RTKLIB\build\app\qtapp\rtknavi_qt\rtknavi_qt.vcxproj]
C:\FieldSoftware\GPS_Software\rtklibexplorer\RTKLIB\app\qtapp\appcmn_qt\refdlg.cpp(126,65): error C2445:         with [C:\FieldSoftware\GPS_Software\rtklibexplorer\RTKLIB\build\app\qtapp\rtknavi_qt\rtknavi_qt.vcxproj]
C:\FieldSoftware\GPS_Software\rtklibexplorer\RTKLIB\app\qtapp\appcmn_qt\refdlg.cpp(126,65): error C2445:         [ [C:\FieldSoftware\GPS_Software\rtklibexplorer\RTKLIB\build\app\qtapp\rtknavi_qt\rtknavi_qt.vcxproj]
C:\FieldSoftware\GPS_Software\rtklibexplorer\RTKLIB\app\qtapp\appcmn_qt\refdlg.cpp(126,65): error C2445:             T=QByteArray [C:\FieldSoftware\GPS_Software\rtklibexplorer\RTKLIB\build\app\qtapp\rtknavi_qt\rtknavi_qt.vcxproj]
C:\FieldSoftware\GPS_Software\rtklibexplorer\RTKLIB\app\qtapp\appcmn_qt\refdlg.cpp(126,65): error C2445:         ] [C:\FieldSoftware\GPS_Software\rtklibexplorer\RTKLIB\build\app\qtapp\rtknavi_qt\rtknavi_qt.vcxproj]
      C:\FieldSoftware\GPS_Software\rtklibexplorer\RTKLIB\app\qtapp\appcmn_qt\refdlg.cpp(126,65):
      could be 'const T'
          with
          [
              T=QByteArray
          ]
      C:\FieldSoftware\GPS_Software\rtklibexplorer\RTKLIB\app\qtapp\appcmn_qt\refdlg.cpp(126,65):
      or       'const char *'
  
C:\FieldSoftware\GPS_Software\rtklibexplorer\RTKLIB\app\qtapp\appcmn_qt\refdlg.cpp(127,57): error C2445: result type of conditional expression is ambiguous: types 'const T' and 'const char [1]' can be converted to multiple common types [C:\FieldSoftware\GPS_Software\rtklibexplorer\RTKLIB\build\app\qtapp\rtknavi_qt\rtknavi_qt.vcxproj]
C:\FieldSoftware\GPS_Software\rtklibexplorer\RTKLIB\app\qtapp\appcmn_qt\refdlg.cpp(127,57): error C2445:         with [C:\FieldSoftware\GPS_Software\rtklibexplorer\RTKLIB\build\app\qtapp\rtknavi_qt\rtknavi_qt.vcxproj]
C:\FieldSoftware\GPS_Software\rtklibexplorer\RTKLIB\app\qtapp\appcmn_qt\refdlg.cpp(127,57): error C2445:         [ [C:\FieldSoftware\GPS_Software\rtklibexplorer\RTKLIB\build\app\qtapp\rtknavi_qt\rtknavi_qt.vcxproj]
C:\FieldSoftware\GPS_Software\rtklibexplorer\RTKLIB\app\qtapp\appcmn_qt\refdlg.cpp(127,57): error C2445:             T=QByteArray [C:\FieldSoftware\GPS_Software\rtklibexplorer\RTKLIB\build\app\qtapp\rtknavi_qt\rtknavi_qt.vcxproj]
C:\FieldSoftware\GPS_Software\rtklibexplorer\RTKLIB\app\qtapp\appcmn_qt\refdlg.cpp(127,57): error C2445:         ] [C:\FieldSoftware\GPS_Software\rtklibexplorer\RTKLIB\build\app\qtapp\rtknavi_qt\rtknavi_qt.vcxproj]
      C:\FieldSoftware\GPS_Software\rtklibexplorer\RTKLIB\app\qtapp\appcmn_qt\refdlg.cpp(127,57):
      could be 'const T'
          with
          [
              T=QByteArray
          ]
      C:\FieldSoftware\GPS_Software\rtklibexplorer\RTKLIB\app\qtapp\appcmn_qt\refdlg.cpp(127,57):
      or       'const char *'

Thanks for any help.

CMakeCache.txt

Debug_stderr.txt

[tjwilli58]

For the convbin error, CoPilot recommended something like:

#if defined(_MSC_VER)
    gmtime_s(&tm, &t);
#else
    gmtime_r(&t, &tm);
#endif

This works:

        if (
#if defined(_MSC_VER)
    gmtime_s(&tm, &st.st_mtime)
#else
    gmtime_r(&st.st_mtime, &tm)
#endif
        ) {

convbin.patch

[tjwilli58]

I should have removed my CMakeLists.txt change before creating the patch file.

[tjwilli58]

More CoPilot suggestions:

auto x = condition ? QString(someQByteArray) : QString("");

refdlg.cpp changed to:

        addReference(n, pos, tokens.size() > 3 ? QString(tokens.at(3)) : QString(""),
                     tokens.size() > 4 ? QString(tokens.at(4)) : QString(""));

works.

[ourairquality]

My mistake, the return value also differs, there is a correction #884

For the convbin error, CoPilot recommended something like:

#if defined(_MSC_VER)
gmtime_s(&tm, &t);
#else
gmtime_r(&t, &tm);
#endif
This works:

    if (

#if defined(_MSC_VER)
gmtime_s(&tm, &st.st_mtime)
#else
gmtime_r(&st.st_mtime, &tm)
#endif
) {
convbin.patch

[ourairquality]

Also recently tried Visual Studio, to work around realloc() issues with BCC, and you might also try this set to quieten warnings #890

[tjwilli58]

My mistake, the return value also differs, there is a correction #884

Thanks. Is that just a typo in the PR title?
gmtime_t.

[tjwilli58]

What about the error C2445 in refdlg.cpp? Did you not get that with Visual Studio?

I don't have Embarcadero. I tried to install a trial copy, but my system blocked the installer, and I haven't found a workaround yet. I also don't have make installed, and am confused a bit by the reference to it in the readme.txt file.

3) compile CLI & GUI
 > make
4) run tests
 > make test

I don't see a Makefile in my build directory after the Cmake project setup.

I'm planning on submitting another issue today about

# tests
add_subdirectory(test)

in CmakeLists.txt. Getting errors I believe because of (for example)
target_link_libraries(t_matrix m lapack blas)

(liblapack, libblas) aren't installed.

[ourairquality]

Was able to get it to build, also without the tests. With local wip patches there were no more warnings. Gave up trying to get them to execute, must have to add the dll paths in there somewhere - the bcc executable files seem to stand alone and might be statically linked and even run under wine.