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Date:      Sat, 30 Dec 2017 21:59:08 +0100
From:      Jan Beich <jbeich@FreeBSD.org>
To:        Alexey Dokuchaev <danfe@FreeBSD.org>
Cc:        ports-committers@freebsd.org, svn-ports-all@freebsd.org, svn-ports-head@freebsd.org
Subject:   Re: svn commit: r457632 - in head/lang/guile2: . files
Message-ID:  <1sjc-ylsz-wny@FreeBSD.org>
In-Reply-To: <201712301912.vBUJCdtc086342@repo.freebsd.org> (Alexey Dokuchaev's message of "Sat, 30 Dec 2017 19:12:39 %2B0000 (UTC)")
References:  <201712301912.vBUJCdtc086342@repo.freebsd.org>

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Alexey Dokuchaev <danfe@FreeBSD.org> writes:

> ++/* With old GCC, do not override _Static_assert: it conflicts with
> ++   #include <complex.h> below. */
> ++#if __clang__ || (__GNUC__ >= 4 && __GNUC_MINOR__ >= 6)

- GCC check for minor version rejects 5.4, 6.4, 7.2
- Clang check needs defined() to pacify -Wundef with GCC

libguile/numbers.c:50:5: warning: "__clang__" is not defined, evaluates to 0 [-Wundef]
 #if __clang__ || (__GNUC__ >= 4 && __GNUC_MINOR__ >= 6)
     ^~~~~~~~~

$ gcc5 -dM -E -</dev/null | fgrep GNUC
#define __GNUC_PATCHLEVEL__ 0
#define __GNUC__ 5
#define __GNUC_STDC_INLINE__ 1
#define __GNUC_MINOR__ 5

$ gcc6 -dM -E -</dev/null | fgrep GNUC
#define __GNUC_PATCHLEVEL__ 0
#define __GNUC__ 6
#define __GNUC_STDC_INLINE__ 1
#define __GNUC_MINOR__ 4

$ gcc7 -dM -E -</dev/null | fgrep GNUC
#define __GNUC_PATCHLEVEL__ 0
#define __GNUC__ 7
#define __GNUC_STDC_INLINE__ 1
#define __GNUC_MINOR__ 2



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