It looks like USE_GCC=any is broken and leads to system-clang use

[Mark Millard]

[Looks like output from "make test-gcc" is appropriate,
so I'm adding such.]

On 2017-Jul-2, at 7:53 PM, Mark Millard <markmi at dsl-only.net> wrote:

> [It looks like USE_GCC=any is broken and leads to system-clang use.]
> 
> On 2017-Jun-29, at 5:58 PM, Gerald Pfeifer <gerald at pfeifer.com> wrote:
> 
>> Am 29. Juni 2017 18:55:59 GMT+08:00 schrieb Mark Millard <markmi at dsl-only.net>:
>>> I'm not currently set up to run more than head on
>>> any of amd64, powerpc64, powerpc, aarch64, or armv6/7
>>> (which are all I target). And I'm in the middle of
>>> attempting a fairly large jump to head -r320458 on
>>> those.
>> 
>> Oh, then I had misunderstood your previous mail. No worries, I'll gently proceed then.
>> 
>> I expect to update gcc5 in the next 24 hours.
>> 
>>> [In my normal/head environment I'm switching to lang/gcc7-devel
>>> for gcc (from lang/gcc6 ) but I'm odd that way.]
>> 
>> The compiler should be fine, it's a number of ports that are not (even blocking the move from GCC 5 to 6 as default).
> 
> As part of testing that an environment seemed stable,
> an environment based on head -r320570 and ports -r444872
> with gcc being lang/gcc7-devel that is installed on
> amd64, I tried:
> 
> script ~/ports_typescripts/phoronix-try-00-typescript portmaster -DK benchmarks/phoronix-test-suite
> 
> in part because it has:
> 
> USE_GCC=        any
> 
> and I'm using:
> 
> DEFAULT_VERSIONS+=perl5=5.24 gcc=7
> 
> in /etc/make.conf and the gcc that I have installed
> is lang/gcc7-devel. This should also have been a test
> of the adjusted-header removal that has been applied
> to lang/gcc7-devel (but not a old environment's build
> used under a modern system environment).
> 
> But the result was a surprise: the log file
> shows all the build as using cc and in my context
> cc is:
> 
> # cc --version
> FreeBSD clang version 4.0.0 (tags/RELEASE_400/final 297347) (based on LLVM 4.0.0)
> Target: x86_64-unknown-freebsd12.0
> Thread model: posix
> InstalledDir: /usr/bin
> 
> Configure repeatedly shows:
> 
> checking for gcc... cc
> . . .
> checking whether we are using the GNU C compiler... yes
> 
> 
> In fact "phoronix-test-suite diagnostics" reports:
> 
> COMPILER = Clang 4.0.0 (SVN 297347) + LLVM 4.0.0
> 
> So clang is being treated as an example of gcc as far
> as I can tell.

# cd /usr/ports/benchmarks/phoronix-test-suite/
FreeBSDx64OPC# make test-gcc
USE_GCC=any
Port can use later versions.
GCC version: 4.2 - OSVERSION up to 9999999
GCC version: 4.8 - OSVERSION up to 0
GCC version: 4.9 - OSVERSION up to 0
GCC version: 5 - OSVERSION up to 0
GCC version: 6 - OSVERSION up to 0
Using GCC version 7
CC=cc - CXX=c++ - CPP=cpp - CFLAGS="-O2 -pipe -g -fstack-protector -fno-strict-aliasing"
LDFLAGS=" -fstack-protector"
BUILD_DEPENDS=/usr/local/include/php/main/php.h:lang/php56 /usr/local/bin/python2.7:lang/python27 update-desktop-database:devel/desktop-file-utils update-mime-database:misc/shared-mime-info /usr/local/lib/php/20131226/ctype.so:textproc/php56-ctype /usr/local/lib/php/20131226/curl.so:ftp/php56-curl /usr/local/lib/php/20131226/dom.so:textproc/php56-dom /usr/local/lib/php/20131226/filter.so:security/php56-filter /usr/local/lib/php/20131226/gd.so:graphics/php56-gd /usr/local/lib/php/20131226/hash.so:security/php56-hash /usr/local/lib/php/20131226/json.so:devel/php56-json /usr/local/lib/php/20131226/openssl.so:security/php56-openssl /usr/local/lib/php/20131226/pcntl.so:devel/php56-pcntl /usr/local/lib/php/20131226/posix.so:sysutils/php56-posix /usr/local/lib/php/20131226/session.so:www/php56-session /usr/local/lib/php/20131226/simplexml.so:textproc/php56-simplexml /usr/local/lib/php/20131226/sockets.so:net/php56-sockets /usr/local/lib/php/20131226/sqlite3.so:databases/php56-sqlite3 /usr/local/lib/php/20131226/zip.so:archivers/php56-zip /usr/local/lib/php/20131226/zlib.so:archivers/php56-zlib
RUN_DEPENDS=fpdf>0:print/fpdf cmake:devel/cmake /usr/local/include/php/main/php.h:lang/php56 /usr/local/bin/python2.7:lang/python27 update-desktop-database:devel/desktop-file-utils update-mime-database:misc/shared-mime-info /usr/local/lib/php/20131226/ctype.so:textproc/php56-ctype /usr/local/lib/php/20131226/curl.so:ftp/php56-curl /usr/local/lib/php/20131226/dom.so:textproc/php56-dom /usr/local/lib/php/20131226/filter.so:security/php56-filter /usr/local/lib/php/20131226/gd.so:graphics/php56-gd /usr/local/lib/php/20131226/hash.so:security/php56-hash /usr/local/lib/php/20131226/json.so:devel/php56-json /usr/local/lib/php/20131226/openssl.so:security/php56-openssl /usr/local/lib/php/20131226/pcntl.so:devel/php56-pcntl /usr/local/lib/php/20131226/posix.so:sysutils/php56-posix /usr/local/lib/php/20131226/session.so:www/php56-session /usr/local/lib/php/20131226/simplexml.so:textproc/php56-simplexml /usr/local/lib/php/20131226/sockets.so:net/php56-sockets /usr/local/lib/php/20131226/sqlite3.so:databases/php56-sqlite3 /usr/local/lib/php/20131226/zip.so:archivers/php56-zip /usr/local/lib/php/20131226/zlib.so:archivers/php56-zlib

===
Mark Millard
markmi at dsl-only.net