(#18) Added GSL (https://git.io/vX8Ln)

Added dependency to GSL for coding safer low level C++ when
interacting with the raw lz4 API.

CMakeLists.txt

@@ -24,11 +24,14 @@ option(CBash_USE_STATIC_RUNTIME "Build with static runtime libs (/MT)" ON)
 option(CBash_NO_BOOST_ZLIB "Build with external Zlib" ON)
 
 set(LZ4_ROOT "" CACHE PATH "Path to the root of the LZ4 distribution (https://git.io/vX8JZ)")
+set(GSL_ROOT "" CACHE PATH "Path to the root of the GSL distribution (https://git.io/vX8Ln)")
 
 
 set(LZ4_INCLUDE_DIR ${LZ4_ROOT}/lib)
 set(LZ4_LIBRARY_DIR ${LZ4_ROOT}/visual/VS2010/bin/Win32/$<CONFIG>)
 
+set(GSL_INCLUDE ${GSL_ROOT})
+
 set(LZ4_LIBRARY ${LZ4_LIBRARY_DIR}/liblz4.lib)
 
 set (BUILD_SHARED_LIBS ${CBash_BUILD_SHARED_LIBS})
@@ -58,6 +61,7 @@ ENDIF ()
 include_directories (   
         ${CBASH_INCLUDE}
         ${Boost_INCLUDE_DIRS}
+        ${GSL_INCLUDE}
         ${ZLIB_INCLUDE_DIR}
         ${LZ4_INCLUDE_DIR}
         ${CBASH_SOURCE}

scripts/generate.cmd

@@ -6,6 +6,7 @@ pushd %THIS%..\build
 SET BOOST_ROOT=%1
 SET ZLIB_ROOT=%2
 SET LZ4_ROOT=%3
+SET GSL_ROOT=%4
 
 IF "%BOOST_ROOT%"=="" (
     ECHO Usage %~nx0 $BOOST_ROOT $ZLIB_ROOT
@@ -33,6 +34,10 @@ IF NOT "%LZ4_ROOT%"==""  (
 SET OPT=%OPT% -DLZ4_ROOT=%LZ4_ROOT%
 )
 
+IF NOT "%GSL_ROOT%"==""  (
+SET OPT=%OPT% -DGSL_ROOT=%GSL_ROOT%
+)
+
 cmake .. %OPT%
 
 :EXIT