or download this
C:\sisyphusion_hide\Math-GSL-0.26>perl build.pl
Checking for GSL..Found GSL version 1.15
...
\MinGW\perl510\bin c:\Mingw\perl510\bin . C:\Gtk+\bin C:\Program Files
+\Windows N
T\Accessories C:\MinGW\bin C:\_32\dmake C:\Windows\system32 C:\Windows
+ C:\Window
s\System32\Wbem C:\batch C:\_32\lzma C:\MinGW\perl510\bin C:\MinGW\msy
+s\1.0\bin)