-DT_A=${T_A} doesn't return T_A properl to require

[jeonghanlee]

linux-x86_64 is going to 1-x86_64 within the require function, and it overwrites EPICS_HOST_ARCH in iocsh when require is executed at the first.

T_A doesn't be defined at the first time in iocsh, however, it is defined when require is executed first time. It also have the broken T_A information.

Hint is in require.c....

have to touch the source codes ..... sigh...

[jeonghanlee]

We should not use -D in order to transfer any target architecture name.

https://gcc.gnu.org/onlinedocs/cpp/System-specific-Predefined-Macros.html#System-specific-Predefined-Macros

https://stackoverflow.com/questions/46714229/strange-token-stringification-in-c-with-linux-variable-or-string