Continued improvement with CentOS package builds

[Jason Bacon <outpaddling%yahoo.com@localhost>]

Successful package builds on CentOS 7 grew significantly again this quarter.

For the latest build, I switched the base compiler from gcc5 (no longer 
supported upstream) to gcc6,
and enabled GCC fortify.  ( I had been running with fortify disabled 
recently due to some serious problems. )

2018Q2 using gcc5:

[root@centosdev bacon]# pkgin avail|wc -l
  17865

Previous -current build (about 1 month ago) using gcc5:

[root@unixdev2 bacon]# pkgin avail|wc -l
  18545

Latest -current build using gcc6:

[root@centosdev bacon]# pkgin avail|wc -l
  18843

Packages and binary bootstrap kits are available here:

http://mirror1.hpc.uwm.edu/pkgsrc/

More details about my work are here:

https://uwm.edu/hpc/software-management/

Below is the current mk.conf (generated by auto-pkgsrc-setup to match 
the pbulk build config).

The auto-pkgsrc-setup script and other tools are available here:

http://netbsd.org/~bacon/

# Example /usr/pkg/etc/mk.conf file produced by bootstrap-pkgsrc
# Mon Oct  1 09:39:28 CDT 2018

.ifdef BSD_PKG_MK    # begin pkgsrc settings

ABI=            64

PKG_DBDIR=        /usr/pkg/pkgdb
LOCALBASE=        /usr/pkg
VARBASE=        /usr/pkg/var
PKG_TOOLS_BIN=        /usr/pkg/sbin
PKGINFODIR=        info
PKGMANDIR=        man


.endif            # end pkgsrc settings

X11_TYPE=        modular
PREFER_NATIVE=        no
PREFER_PKGSRC=        yes
PKGSRC_FORTRAN=        gfortran
PKG_DEVELOPER=        yes
FETCH_USING=        curl
SKIP_LICENSE_CHECK=    yes
PKG_OPTIONS.libfetch=    inet6 openssl

.if     empty(PKGPATH:Marchivers/bzip2) && \
    empty(PKGPATH:Marchivers/pax) && \
    empty(PKGPATH:Marchivers/xz) && \
    empty(PKGPATH:Mconverters/help2man) && \
    empty(PKGPATH:Mconverters/libiconv) && \
    empty(PKGPATH:Mconverters/p5-Unicode-EastAsianWidth) && \
    empty(PKGPATH:Mdevel/autoconf) && \
    empty(PKGPATH:Mdevel/binutils) && \
    empty(PKGPATH:Mdevel/gettext-lib) && \
    empty(PKGPATH:Mdevel/gettext-tools) && \
    empty(PKGPATH:Mdevel/gmake) && \
    empty(PKGPATH:Mdevel/gmp) && \
    empty(PKGPATH:Mdevel/gtexinfo) && \
    empty(PKGPATH:Mdevel/pkgconf) && \
    empty(PKGPATH:Mdevel/libtool-base) && \
    empty(PKGPATH:Mdevel/m4) && \
    empty(PKGPATH:Mdevel/ncurses) && \
    empty(PKGPATH:Mdevel/nbpatch) && \
    empty(PKGPATH:Mdevel/p5-gettext) && \
    empty(PKGPATH:Mlang/gcc6) && \
    empty(PKGPATH:Mlang/gcc6-libs) && \
    empty(PKGPATH:Mlang/perl5) && \
    empty(PKGPATH:Mmath/cloog) && \
    empty(PKGPATH:Mmath/isl) && \
    empty(PKGPATH:Mmath/mpcomplex) && \
    empty(PKGPATH:Mmath/mpfr) && \
    empty(PKGPATH:Mmisc/p5-Locale-libintl) && \
    empty(PKGPATH:Mnet/libfetch) && \
    empty(PKGPATH:Mpkgtools/cwrappers) && \
    empty(PKGPATH:Mpkgtools/digest) && \
    empty(PKGPATH:Mpkgtools/pkg_install-info) && \
    empty(PKGPATH:Mpkgtools/pkgin) && \
    empty(PKGPATH:Msysutils/checkperms) && \
    empty(PKGPATH:Mtextproc/gsed) && \
    empty(PKGPATH:Mtextproc/p5-Text-Unidecode)

GCC_REQD+=6.0

.endif  # GCC_REQD

# RHEL systems may have an outdated "as" that cannot translate instructions
# from current GCC code generators, so force pkgsrc binutils.
.if exists(/etc/redhat-release) && !empty(PKGPATH:Mlang/gcc*)
CONFIGURE_ARGS+=        --with-gnu-as --with-as=${PREFIX}/bin/gas
CONFIGURE_ARGS+=        --with-gnu-ld --with-ld=${PREFIX}/bin/gld
BUILDLINK_DEPMETHOD.binutils=   full
.  include "../../devel/binutils/buildlink3.mk"
.endif