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.