Unable to build using MinGW

[kmilos]

This is w/ 0.9.0 tarball.

Even w/ considerable CMakeLists.txt changes to enable MinGW build (e.g. WIN32 is misused as it covers not only MSVC, and a few others, shared in #94 (comment)), the final linking step of ojph_expand and ojph_compress fail w/

[34/35] Linking CXX executable ojph_expand.exe
FAILED: ojph_expand.exe
C:\WINDOWS\system32\cmd.exe /C "cd . && C:\msys64\ucrt64\bin\g++.exe -march=nocona -msahf -mtune=generic -O2 -pipe -fexceptions -Wall -Wextra -Wconversion -Wunused-parameter -DOJPH_ENABLE_TIFF_SUPPORT -O3 -DNDEBUG -pipe CMakeFiles/ojph_expand.dir/src/apps/ojph_expand/ojph_expand.cpp.obj CMakeFiles/ojph_expand.dir/src/apps/others/ojph_img_io.cpp.obj CMakeFiles/ojph_expand.dir/src/apps/others/ojph_img_io_sse41.cpp.obj CMakeFiles/ojph_expand.dir/src/apps/others/ojph_img_io_avx2.cpp.obj -o ojph_expand.exe -Wl,--out-implib,libojph_expand.dll.a -Wl,--major-image-version,0,--minor-image-version,0  libopenjph.dll.a  C:/msys64/ucrt64/lib/libtiff.dll.a  -lkernel32 -luser32 -lgdi32 -lwinspool -lshell32 -lole32 -loleaut32 -luuid -lcomdlg32 -ladvapi32 && cd ."
C:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/ojph_expand.dir/src/apps/ojph_expand/ojph_expand.cpp.obj:ojph_expand.cp:(.rdata$.refptr._ZTVN4ojph10j2c_infileE[.refptr._ZTVN4ojph10j2c_infileE]+0x0): undefined reference to `vtable for ojph::j2c_infile'
C:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/ojph_expand.dir/src/apps/others/ojph_img_io.cpp.obj:ojph_img_io.cp:(.text+0x261e): undefined reference to `ojph::get_cpu_ext_level()'
C:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/ojph_expand.dir/src/apps/others/ojph_img_io.cpp.obj:ojph_img_io.cp:(.text+0x262c): undefined reference to `ojph::get_cpu_ext_level()'
C:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/ojph_expand.dir/src/apps/others/ojph_img_io.cpp.obj:ojph_img_io.cp:(.text+0x26bf): undefined reference to `ojph::get_cpu_ext_level()'
C:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/ojph_expand.dir/src/apps/others/ojph_img_io.cpp.obj:ojph_img_io.cp:(.text+0x26e2): undefined reference to `ojph::get_cpu_ext_level()'
C:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/ojph_expand.dir/src/apps/others/ojph_img_io.cpp.obj:ojph_img_io.cp:(.text+0x2724): undefined reference to `ojph::get_cpu_ext_level()'
C:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/ojph_expand.dir/src/apps/others/ojph_img_io.cpp.obj:ojph_img_io.cp:(.text+0x272e): more undefined references to `ojph::get_cpu_ext_level()' follow
collect2.exe: error: ld returned 1 exit status
[35/35] Linking CXX executable ojph_compress.exe
FAILED: ojph_compress.exe
C:\WINDOWS\system32\cmd.exe /C "cd . && C:\msys64\ucrt64\bin\g++.exe -march=nocona -msahf -mtune=generic -O2 -pipe -fexceptions -Wall -Wextra -Wconversion -Wunused-parameter -DOJPH_ENABLE_TIFF_SUPPORT -O3 -DNDEBUG -pipe CMakeFiles/ojph_compress.dir/src/apps/ojph_compress/ojph_compress.cpp.obj CMakeFiles/ojph_compress.dir/src/apps/others/ojph_img_io.cpp.obj CMakeFiles/ojph_compress.dir/src/apps/others/ojph_img_io_sse41.cpp.obj CMakeFiles/ojph_compress.dir/src/apps/others/ojph_img_io_avx2.cpp.obj -o ojph_compress.exe -Wl,--out-implib,libojph_compress.dll.a -Wl,--major-image-version,0,--minor-image-version,0  libopenjph.dll.a  C:/msys64/ucrt64/lib/libtiff.dll.a  -lkernel32 -luser32 -lgdi32 -lwinspool -lshell32 -lole32 -loleaut32 -luuid -lcomdlg32 -ladvapi32 && cd ."
C:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/ojph_compress.dir/src/apps/ojph_compress/ojph_compress.cpp.obj:ojph_compress.:(.rdata$.refptr._ZTVN4ojph11j2c_outfileE[.refptr._ZTVN4ojph11j2c_outfileE]+0x0): undefined reference to `vtable for ojph::j2c_outfile'
C:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/ojph_compress.dir/src/apps/others/ojph_img_io.cpp.obj:ojph_img_io.cp:(.text+0x261e): undefined reference to `ojph::get_cpu_ext_level()'
C:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/ojph_compress.dir/src/apps/others/ojph_img_io.cpp.obj:ojph_img_io.cp:(.text+0x262c): undefined reference to `ojph::get_cpu_ext_level()'
C:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/ojph_compress.dir/src/apps/others/ojph_img_io.cpp.obj:ojph_img_io.cp:(.text+0x26bf): undefined reference to `ojph::get_cpu_ext_level()'
C:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/ojph_compress.dir/src/apps/others/ojph_img_io.cpp.obj:ojph_img_io.cp:(.text+0x26e2): undefined reference to `ojph::get_cpu_ext_level()'
C:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/ojph_compress.dir/src/apps/others/ojph_img_io.cpp.obj:ojph_img_io.cp:(.text+0x2724): undefined reference to `ojph::get_cpu_ext_level()'
C:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles/ojph_compress.dir/src/apps/others/ojph_img_io.cpp.obj:ojph_img_io.cp:(.text+0x272e): more undefined references to `ojph::get_cpu_ext_level()' follow
collect2.exe: error: ld returned 1 exit status

This points to missing exported symbols.

[kmilos]

The last errors relating to get_cpu_ext_level() might be already resolved in master by e4bfbf8, but I think the missing export of classes j2c_infile and j2c_infile is still relevant (i.e. entire class instated of selected members)?

[aous72]

I think the missing export of classes j2c_infile and j2c_infile is still relevant (i.e. entire class instated of selected members)

Thank you for highlighting this -- I did not know about it.

Kind regards,
Aous.

[kmilos]

0.10.1 builds and links for me now, thanks!