Updated MakeFile for compatability with linux mint

[EdgeCaseBerg]

-c99 for the standard causes the code to fail with an implicit
declaration of the function strsep as well as errors from atoi making a
pointer from an integer without a cast. Updating the makefile to use the
gnu99 standard resolves these errors.

For reference:

uname -a
Linux Turing 3.2.0-23-generic #36-Ubuntu SMP Tue Apr 10 20:39:51 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

[seenaburns]

This feels like an indirect way of addressing the problem, is there a way of fixing the code itself to compile on Linux Mint? Or would it compile without -Werror?

I haven't heard of people experiencing this problem before, so I'd prefer to make smaller changes, in case changing the standard introduces new issues.

[EdgeCaseBerg]

This is the full error from trying to run make

cc -Wall -Werror -Wextra -std=c99 -pedantic -Wno-unused-parameter stag.c view.c data.c -o stag -lncurses -lm -D_DEFAULT_SOURCE 
stag.c: In function ‘main’:
stag.c:131:11: error: implicit declaration of function ‘strsep’ [-Werror=implicit-function-declaration]
stag.c:131:11: error: passing argument 1 of ‘atoi’ makes pointer from integer without a cast [-Werror]
/usr/include/stdlib.h:148:12: note: expected ‘const char *’ but argument is of type ‘int’
stag.c:132:11: error: passing argument 1 of ‘atoi’ makes pointer from integer without a cast [-Werror]
/usr/include/stdlib.h:148:12: note: expected ‘const char *’ but argument is of type ‘int’
cc1: all warnings being treated as errors
make: *** [stag] Error 1

Removing -Werror will allow it compile with warnings, but if you ask me removing -Werror is worse than updating to a different standard.

The issue is that strsep is not a POSIX or Linux standard function, it's a BSD function. So on ubuntu and other non-bsd code it won't work unless you use the gnu99 standard