Date: Sun, 6 Sep 2015 00:06:58 +1000 From: andrew clarke <mail@ozzmosis.com> To: "William A. Mahaffey III" <wam@hiwaay.net> Cc: FreeBSD Questions !!!! <freebsd-questions@freebsd.org> Subject: Re: GCC question Message-ID: <20150905140658.GA790@ozzmosis.com> In-Reply-To: <55EAEE19.2060807@hiwaay.net> References: <55EAEE19.2060807@hiwaay.net>
next in thread | previous in thread | raw e-mail | index | archive | help
On Sat 2015-09-05 08:34:27 UTC-0453, William A. Mahaffey III (wam@hiwaay.net) wrote: >> I have some code which was originally SGI native, then moved to Linux > (FC14 x86_64 & CentOS 5). I am now interested in getting it going under > FreeBSD 9.3R. Due to differences in system header file includes, I need > to tweek some of my app-specific header files. I have poked around the > (*COPIOUS* !!!!) GCC man page & I couldn't find (or missed) either how > to get it to regurgitate its default compiler-defines or a tabulation of > those defines, so I can use them to conditionally include system headers > in my own header files. Where is this info :-) ? TIA & have a nice > (long) weekend. You probably want: gcc -dM -E - < /dev/null Ordinarily to detect FreeBSD you'd use: #ifdef __FreeBSD__ ... #endif
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20150905140658.GA790>