Discuss here different C compiler set ups, and compiling executables for the ESP8266

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By X7JAY7X
#33769 I have setup VS2013 per the instructions on this forum and I can compile this example here: https://github.com/beckdac/ESP8266-transparent-bridge. However, when I try to change this example I get the following errors:

Error
1 error MSB3073: The command "espmake" exited with code 2. C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V120\Microsoft.MakeFile.Targets 38 5 ESP8266-transparent-bridge
2 IntelliSense: identifier "__builtin_va_list" is undefined c:\Projects\Espressif\xtensa-lx106-elf\lib\gcc\xtensa-lx106-elf\4.8.2\include\stdarg.h 40 9 ESP8266-transparent-bridge
3 IntelliSense: expected a ';' c:\Projects\Espressif\xtensa-lx106-elf\xtensa-lx106-elf\include\sys\_types.h 36 15 ESP8266-transparent-bridge

For error 2, it is erroring on this line in stdarg.h: typedef __builtin_va_list __gnuc_va_list;
For error 3, it is erroring on this line in _types.h: __extension__ typedef long long _off64_t;

Does anyone have any ideas what is causing this and how to fix it?

Thanks
Jason