Log message:
gcc7: Revert zlib change, it causes bootstrap issues.

It doesn't appear to be related to the failure that prompted it.  Bump
gcc7-libs twice as it had fallen behind gcc7.

Log message:
gcc7: use system zlib, and declare a dependency on it.

this might be the cause of weird missing -lz on the latest SmartOS bulk
build, which appears to use this package (e.g. graphics/glitz).

Bump PKGREVISION.

Log message:
gcc7[-libs]: updated to 7.4.0

7.4.0:
Bug-fix release.
This \ 
[https://gcc.gnu.org/bugzilla/buglist.cgi?bug_status=RESOLVED&resolution=FIXED&target_milestone=7.4] \ 
is the list of problem reports (PRs) from GCC's bug tracking system that are \ 
known to be fixed in the 7.4 release. This list might not be complete (that is, \ 
it is possible that some PRs that have been fixed are not listed here).

Log message:
gcc7: don't try to make references to stack_chk_fail_local on netbsd/sun
sun was added as joyent is patching for the same.

this code is only reached if compiling for i386 (or some variation of ppc)
netbsd's stack_chk_fail_local won't work for this.

PR pkg/53436.

Log message:
gcc7: fix many netbsd targets.

add netbsd/arm EABI target. recognise dwarf2 unwinding in the common arm code.

switch convoluted stddef.h logic from relying on include guards having certain
names to only applying for netbsd, which should be the sole remaining user.
(necessary for netbsd/arm, which uses different include guards for ansi.h)

move linux/alpha code out of shared alpha+ELF header.

make all netbsd targets include netbsd-stdint.h.

Fixes PR pkg/52951.

Bump PKGREVISION. bump gcc7-libs PKGREVISION above this one.

Log message:
gcc7-libs: Add package.

This provides the same functionality as the other gcc*-libs packages.