--- a/Modules/FindBLAS.cmake
+++ b/Modules/FindBLAS.cmake
@@ -4,6 +4,10 @@
 #
 # Find BLAS library
 #
+# Version modified for Gentoo Linux.
+# If a valid PkgConfig configuration is found, this overrides and cancels
+# all further checks.
+#
 # This module finds an installed fortran library that implements the
 # BLAS linear-algebra interface (see http://www.netlib.org/blas/).  The
 # list of libraries searched for is taken from the autoconf macro file,
@@ -50,6 +54,23 @@
 # (To distribute this file outside of CMake, substitute the full
 #  License text for the above reference.)
 
+# first, try PkgConfig
+#
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(PC_BLAS blas)
+if(PC_BLAS_FOUND)
+  foreach(PC_LIB ${PC_BLAS_LIBRARIES})
+    find_library(${PC_LIB}_LIBRARY NAMES ${PC_LIB} HINTS ${PC_BLAS_LIBRARY_DIRS} )
+    if (NOT ${PC_LIB}_LIBRARY)
+      message(FATAL_ERROR "Something is wrong in your pkg-config file - lib ${PC_LIB} not found in ${PC_BLAS_LIBRARY_DIRS}")
+    endif (NOT ${PC_LIB}_LIBRARY)
+    list(APPEND BLAS_LIBRARIES ${${PC_LIB}_LIBRARY}) 
+  endforeach(PC_LIB)
+  find_package_handle_standard_args(BLAS DEFAULT_MSG BLAS_LIBRARIES)
+  mark_as_advanced(BLAS_LIBRARIES)
+else(PC_BLAS_FOUND)
+message(STATUS "No PkgConfig configuration for BLAS found; starting more extensive search.")
+
 include(${CMAKE_CURRENT_LIST_DIR}/CheckFunctionExists.cmake)
 include(${CMAKE_CURRENT_LIST_DIR}/CheckFortranFunctionExists.cmake)
 
@@ -688,3 +709,5 @@
 endif()
 
 set(CMAKE_FIND_LIBRARY_SUFFIXES ${_blas_ORIG_CMAKE_FIND_LIBRARY_SUFFIXES})
+
+endif(PC_BLAS_FOUND)