compiler toolchain glitches in 18.12-PRERELEASE

[ghost]

Problem 1 - missing header files.

the default install of llvm60 is missing the "*.h" include files that should populate /usr/include. as a result, a test compile of a "hello world" program will fail to find the standard include files.
to recreate:

1. run compiler-bootstrap llvm60
2. create a "hello world" program (t.c):

#include <stdio.h>
int main()
{
  printf("hello world!\n");
  return(0);
}

3. compile with -v:
   cc -v t.c

the compile fails with clang failing to find stdio.h reading the output, the "#include ..." lines show where the toolchain will look for includes. there are two:

/usr/local/llvm60/lib/clang/6.0.1/include
/usr/include

neither one of these contains standard C program header files (stdio.h, ctype.h, etc.) all of those "*.h" files are missing.

Problem 2 - missing libraries
Copying the "*.h" files into /usr/include allows the compile to proceed. however, the linker abends as it cannot find some required libraries:

-lgcc
-lgcc_s
-lc

examining the output of cc -v t.c notes that the linker is looking for all libraries in /usr/lib

the required libraries do exist on a recent trueos build (snapshot 208), but not on a trident build.

[ghost]

moved this issue to trident-core and closed it here.