simplify build & install for *BSD
diff --git a/make.sh b/make.sh
index 19edd75..64d47e3 100755
--- a/make.sh
+++ b/make.sh
@@ -37,13 +37,16 @@
 export CC=gcc
 fi
 
+if [[ "$(uname)" == *BSD* ]]; then
+export MAKE=gmake
+export PREFIX=/usr/local
+fi
+
 case "$1" in
   "" ) build;;
   "default" ) build;;
   "install" ) install;;
   "nix32" ) CFLAGS=-m32 LDFLAGS=-m32 build;;
-  "bsd" ) MAKE=gmake PREFIX=/usr/local build;;
-  "bsd_install" ) MAKE=gmake PREFIX=/usr/local install;;
   "cross-win32" ) CROSS=i686-w64-mingw32- build;;
   "cross-win64" ) CROSS=x86_64-w64-mingw32- build;;
   "cygwin-mingw32" ) CROSS=i686-pc-mingw32- build;;