gentoo-overlay/sci-mathematics/Macaulay2/files/Macaulay2-1.8.2.1-lapack.patch

--- configure.ac	2015-09-03 14:49:42.000000000 +0200
+++ configure.ac.new	2016-01-27 12:50:07.812215547 +0100
@@ -1301,46 +1301,7 @@
      BUILTLIBS="$SINGULARLIBS $BUILTLIBS"
 fi
 
-# we need to do the fortran library testing last, in case AC_SEARCH_LIBS adds
-# one of them to $LIBS, making it impossible to check for the presence of C or
-# C++ libraries.  (I'm not sure why putting -llapack on the gcc command line
-# needlessly causes the library to be linked against.)
-FORTRANUSED=no
-if test "$LAPACK" = yes
-then AC_MSG_CHECKING([whether the Accelerate framework is available])
-     SAVELIBS=$LIBS LIBS="-framework Accelerate $LIBS"
-     AC_LANG(C)
-     AC_LINK_IFELSE(
-	 [AC_LANG_PROGRAM(,[sgemv_();dgetrf_();])],
-	 [
-	     AC_MSG_RESULT(yes)
-	     ],
-	 [
-	     AC_MSG_RESULT(no)
-	     LIBS=$SAVELIBS
-	     FORTRANUSED=yes
-	     if test $BUILD_lapack = no
-	     then AC_LANG(Fortran)
-	     	  if test "$FC" = ""
-		  then AC_MSG_ERROR(no fortran compiler found)
-		  else AC_MSG_NOTICE(using fortran compiler $FC)
-		  fi
-		  AC_SEARCH_LIBS(sgemv,blas f77blas,,BUILD_lapack=yes)
-		  AC_SEARCH_LIBS(dgetrf,lapack,,BUILD_lapack=yes)
-	     fi
-	 ])
-fi
-test $BUILD_lapack = yes && BUILTLIBS="-llapack -lrefblas $BUILTLIBS"
-
-if test $BUILD_lapack = yes
-then # test whether the fortran compiler can handle lapack, which, starting with
-     # version 3.2, requires fortran 90, not fortran 77
-    AC_LANG(Fortran)
-    AC_MSG_CHECKING([whether the fortran compiler is modern enough for lapack])
-    AC_COMPILE_IFELSE([instrinsic maxloc],
-	AC_MSG_ERROR(the fortran compiler ($FC) does not support the Fortran 90 language required for compiling lapack),
-	AC_MSG_RESULT(yes))
-fi
+BUILTLIBS="$(${PKG_CONFIG} --libs lapack) $BUILTLIBS"
 
 test "$USE_FCLIBS" = no && FCLIBS=
 test "$FORTRANUSED" = no && FCLIBS=