How to Build on Windows

[dwvisser]

I am trying to build libfec on Windows using “Build Tools for Visual Studio” and running Visual Studio Code with the C/C++ Extension Pack and CMake Tools. It just doesn't build for me. Here is the start of the long list of compiler warnings and errors I get when trying to compile the fec target:

[build] C:\Users\dvisser\Documents\Tasks\FABRIC\libfec\viterbi27_port.c(14,66): error C2061: syntax error: identifier '__attribute__' [C:\Users\dvisser\Documents\Tasks\FABRIC\libfec\build\fec.vcxproj]
[build] C:\Users\dvisser\Documents\Tasks\FABRIC\libfec\viterbi27_port.c(14,66): error C2059: syntax error: ';' [C:\Users\dvisser\Documents\Tasks\FABRIC\libfec\build\fec.vcxproj]
[build] C:\Users\dvisser\Documents\Tasks\FABRIC\libfec\viterbi27_port.c(14,90): error C2143: syntax error: missing ')' before 'constant' [C:\Users\dvisser\Documents\Tasks\FABRIC\libfec\build\fec.vcxproj]
[build] C:\Users\dvisser\Documents\Tasks\FABRIC\libfec\viterbi27_port.c(14,90): warning C4255: 'aligned': no function prototype given: converting '()' to '(void)' [C:\Users\dvisser\Documents\Tasks\FABRIC\libfec\build\fec.vcxproj]
[build] C:\Users\dvisser\Documents\Tasks\FABRIC\libfec\viterbi27_port.c(14,92): error C2059: syntax error: ')' [C:\Users\dvisser\Documents\Tasks\FABRIC\libfec\build\fec.vcxproj]
[build] C:\Users\dvisser\Documents\Tasks\FABRIC\libfec\viterbi27_port.c(14,93): error C2059: syntax error: ')' [C:\Users\dvisser\Documents\Tasks\FABRIC\libfec\build\fec.vcxproj]
[build] C:\Users\dvisser\Documents\Tasks\FABRIC\libfec\viterbi27_port.c(14,94): error C2059: syntax error: ')' [C:\Users\dvisser\Documents\Tasks\FABRIC\libfec\build\fec.vcxproj]
[build] C:\Users\dvisser\Documents\Tasks\FABRIC\libfec\viterbi27_port.c(49,17): error C2065: 'Branchtab27': undeclared identifier [C:\Users\dvisser\Documents\Tasks\FABRIC\libfec\build\fec.vcxproj]
[build] C:\Users\dvisser\Documents\Tasks\FABRIC\libfec\viterbi27_port.c(49,16): error C2109: subscript requires array or pointer type [C:\Users\dvisser\Documents\Tasks\FABRIC\libfec\build\fec.vcxproj]
[build] C:\Users\dvisser\Documents\Tasks\FABRIC\libfec\viterbi27_port.c(50,17): error C2065: 'Branchtab27': undeclared identifier [C:\Users\dvisser\Documents\Tasks\FABRIC\libfec\build\fec.vcxproj]
[build] C:\Users\dvisser\Documents\Tasks\FABRIC\libfec\viterbi27_port.c(50,16): error C2109: subscript requires array or pointer type [C:\Users\dvisser\Documents\Tasks\FABRIC\libfec\build\fec.vcxproj]

Another clue: libraries like getopt.h are not found by the check_include_file test. If anyone out there knows the secret sauce to get this to work, please let me know.