trouble compiling on windows

[lvasa]

Hi, I'm having trouble compiling on windows - I have installed conda and mpir, but I keep getting linker errors such as

FloatTetwild.lib(LocalOperations.obj) : error LNK2001: unresolved external symbol ___gmpq_add [D:\ftet\build\FloatTetwild_bin.vcxproj]

is there something I should try?

Best,

Libor Vasa

[hph73]

I got the same problem when I installed gmp using conda. My problem was solved by downloading gmp from here https://cs.nyu.edu/~exact/core/gmp/index.html. Be sure to change environment variables GMP_INC and GMP_LIB accordingly.

[dedelecoder]

Hi, the link looks dead, Any place where i can donwload it? Thanks a lot

[Yixin-Hu]

Hi, you can try downloading gmp from its official website (https://gmplib.org/) and following the instruction there.

[Const-me]

@lvasa Edit cmake\FindGMPfTetWild.cmake source file.
Find the following two lines:

find_library(GMP_LIBRARIES NAMES gmp libgmp PATHS $ENV{GMP_LIB} ${GMP_WINDOWS_PATH})
find_library(GMPXX_LIBRARIES NAMES gmpxx libgmpxx PATHS $ENV{GMP_LIB} ${GMP_WINDOWS_PATH})

Replace them with the following ones:

find_library(GMP_LIBRARIES NAMES gmp mpir.lib PATHS $ENV{GMP_LIB} ${GMP_WINDOWS_PATH})
find_library(GMPXX_LIBRARIES NAMES gmpxx mpirxx.lib PATHS $ENV{GMP_LIB} ${GMP_WINDOWS_PATH})

Re-generate Visual Studio solution after that change, open in Visual Studio, and build the FloatTetwild_bin project.

Don’t forget to copy mpir.dll into your output directory. Otherwise, Windows will show an error message when you try to run the FloatTetwild_bin.exe you have built.

[zhanghaoxuan184]

Has anyone had this error when generating FloatTetwild_bin in Visual Studio?
D:\Mesh2Tet-main\fTetWild\build\Debug\FloatTetwild_bin.exe : fatal error LNK1169: one or more multiply defined symbols were found

[zhanghaoxuan184]

@Const-me

[hph73]

Hi, the link looks dead, Any place where i can donwload it? Thanks a lot

I put the libs I use here. https://github.com/hph73/gmp

[xyont]

hi, is there any complete binary of fTetWild with dll required?

[BimwerxNZ]

For me, the following worked after several attempts on Windows 11 with VS 2022:

I first replaced the following lines in FindGMPfTetWild.cmake as @Const-me described:

#find_library(GMP_LIBRARIES NAMES gmp libgmp PATHS $ENV{GMP_LIB} ${GMP_WINDOWS_PATH})
#find_library(GMPXX_LIBRARIES NAMES gmpxx libgmpxx PATHS $ENV{GMP_LIB} ${GMP_WINDOWS_PATH})
find_library(GMP_LIBRARIES NAMES gmp mpir.lib PATHS $ENV{GMP_LIB} ${GMP_WINDOWS_PATH})
find_library(GMPXX_LIBRARIES NAMES gmpxx mpirxx.lib PATHS $ENV{GMP_LIB} ${GMP_WINDOWS_PATH})

Then I obtained compiled binaries for MPIR from here: https://github.com/ChillMagic/MPIR-Binary/tree/master and placed in C:\Dev\Mesh\MPIR-Binary-master\

Then, I added the following Environment Variables:
GMP_INC = C:\Dev\Mesh\MPIR-Binary-master\MPIR-Binary-master\include
GMP_LIB = C:\Dev\Mesh\MPIR-Binary-master\MPIR-Binary-master\lib\MT\x64\Release
GMP_LIBRARIES = C:\Dev\Mesh\MPIR-Binary-master\MPIR-Binary-master\lib\MT\x64\Release
GMPXX_LIBRARIES = C:\Dev\Mesh\MPIR-Binary-master\MPIR-Binary-master\lib\MT\x64\Release
(Might be a bit overkill but it worked)

Then, run CMake and configure to x64 using VS 2022. You should see the 'C:/Dev/Mesh/MPIR-Binary-master/MPIR-Binary-master/lib/MT/x64/Release/mpirxx.lib' being detected for GMPXX_LIBRARIES

I set CMAKE_CONFIGURATION_TYPES to Debug;Release

Configure again, then Generate.

Launch the VS Project, and then go to FloatTetwild_bin properties C/C++ then Code Generation and make sure Runtime library is set to 'Multi-threaded DLL (/MD)'

Do the same for all other projects in the solution, set geogram to 'Multi-threaded DLL (/MD)', also geogram_third_party, and all others. I did this for Release setup. Then build FloatTetwild_bin

No need to copy DLLs after this compile, it seems to work fine using the EXE only.

Hope this works for you also.

Cheers!