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Date: Thu, 14 Nov 2013 12:07:00 -0000
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Subject: =?windows-1252?Q?Re=3A_How_to_fix_=22=91get=5Fcurrent=5Fdir=5Fname=92_was_not_d?=	=?windows-1252?Q?eclared_in_this_scope=22_=3F?=
From: Jonathan Wakely <jwakely.gcc@gmail.com>
To: David Aldrich <David.Aldrich@emea.nec.com>
Cc: "gcc-help@gcc.gnu.org" <gcc-help@gcc.gnu.org>
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On 14 November 2013 11:57, David Aldrich wrote:
> Hi
>
> Our application builds fine on Ubuntu 12.04 LTS, using gcc 4.6.3.
>
> However, when I attempt to build on Fedora 19, which uses gcc 4.8.2 I see:
>
> g++ -I../../Kernel -Wall -m64 -O3 -c -o FileSystem.o FileSystem.cpp
> FileSystem.cpp: In static member function =91static std::string FileSyste=
m::currentDir()=92:
> FileSystem.cpp:108:34: error: =91get_current_dir_name=92 was not declared=
 in this scope
> p =3D get_current_dir_name();
>
> Please will someone explain how to fix this?

Declare the function, of course!

It's declared in <unistd.h> so make sure you include that.

If you use that function without including <unistd.h> then your code
was always broken, but you got away with it in the past.  See the
header dependency changes section of
http://gcc.gnu.org/gcc-4.7/porting_to.html for more details.