Re: how to detect gcc version in configure.ac

2014-08-01 Thread Mike Frysinger
On Fri 04 Jul 2014 12:18:53 David A. Wheeler wrote: > This does not help you right now, but Dale Visser posted a patch to autoconf > a few months ago that would solve your problem correctly. His patch adds > the ability to check if a compiler supports a particular flag. My hope is > that this abili

Re: how to detect gcc version in configure.ac

2014-07-04 Thread David A. Wheeler
This does not help you right now, but Dale Visser posted a patch to autoconf a few months ago that would solve your problem correctly. His patch adds the ability to check if a compiler supports a particular flag. My hope is that this ability will soon be added to autoconf. Clearly some people wa

Re: how to detect gcc version in configure.ac

2014-07-04 Thread Eric Blake
On 07/03/2014 11:38 PM, Minxuan Zhuang wrote: > a project needs to satisfy both gcc 4.1.2 and gcc 4.7.3, but some options > in the latter one(like -Wno-narrowing and Wno-unused-result) cannot be used > in the former one. So I need to test the cutrrent gcc version and decide > what can of option can

how to detect gcc version in configure.ac

2014-07-04 Thread Minxuan Zhuang
a project needs to satisfy both gcc 4.1.2 and gcc 4.7.3, but some options in the latter one(like -Wno-narrowing and Wno-unused-result) cannot be used in the former one. So I need to test the cutrrent gcc version and decide what can of option can be assigned to CFLAGS, sth like: if gcc version == 4