Re: Error in bfd/doc/Makefile

[Nicholas Clifton]

Hi Stephen,

> It appears within the bfd/doc makefile it Assumes CC=pcc correctly but sets
> CC_FOR_BUILD = gcc which is nowhere on the system. This creates the below
> error when compiling binutils on a musl-pcc system. Setting CC_FOR_BUILD =
> pcc manually allows chew to build.

I think that the intention is that CC_FOR_BUILD should be set by the 
user, if they are cross-compiling a toolchain.

The logic to choose CC_FOR_BUILD can be found in bfd/acinclude.m4:

  AC_DEFUN([BFD_CC_FOR_BUILD],
  [# Put a plausible default for CC_FOR_BUILD in Makefile.
  if test -z "$CC_FOR_BUILD"; then
    if test "x$cross_compiling" = "xno"; then
      CC_FOR_BUILD='$(CC)'
    else
      CC_FOR_BUILD=gcc
    fi
  fi

So, if the CC_FOR_BUILD is not set, and if this is a cross-compilation, 
then gcc is used as a last resort.  The implication is that CC is for 
native builds whereas CC_FOR_BUILD is for cross builds.

Cheers
  Nick