Also print extra warnings - farbfeld - suckless image format with conversion tools
 (HTM) git clone git://git.suckless.org/farbfeld
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       ---
 (DIR) commit f22282e99a963f5935ea68a583cc7d928a787ce1
 (DIR) parent aa873108425a500d8f47edb56fb476f248cb09d0
 (HTM) Author: Laslo Hunhold <dev@frign.de>
       Date:   Wed, 12 Apr 2017 23:36:06 +0200
       
       Also print extra warnings
       
       Diffstat:
         M config.mk                           |       2 +-
       
       1 file changed, 1 insertion(+), 1 deletion(-)
       ---
 (DIR) diff --git a/config.mk b/config.mk
       @@ -9,7 +9,7 @@ MANPREFIX = ${PREFIX}/man
        
        # flags
        CPPFLAGS = -D_DEFAULT_SOURCE
       -CFLAGS   = -std=c99 -pedantic -Wall -Os
       +CFLAGS   = -std=c99 -pedantic -Wall -Wextra -Os
        LDFLAGS  = -s
        
        png2ff-LDFLAGS = -lpng