Add OPENBLAS_NO_F2C math library option

src/configure

@@ -834,7 +834,7 @@ auto_lib=             # Deduced lib name, used when $MATHLIB is not set.
 
 # Validate the (optionally) provided MATHLIB value.
 case $MATHLIB in
-  ''|ATLAS|CLAPACK|MKL|OPENBLAS|OPENBLAS_CLAPACK) : ;;
+  ''|ATLAS|CLAPACK|MKL|OPENBLAS|OPENBLAS_CLAPACK|OPENBLAS_NO_F2C) : ;;
   *) failure "Unknown --mathlib='${MATHLIB}'. Supported libs: ATLAS CLAPACK MKL OPENBLAS" ;;
 esac
 
@@ -1301,7 +1301,7 @@ or try another math library, e.g. --mathlib=OPENBLAS (Kaldi may be slower)."
     esac >> kaldi.mk
 
     echo "Successfully configured for Linux with OpenBLAS from $OPENBLASROOT"
-  elif [ "$MATHLIB" == "OPENBLAS_CLAPACK" ]; then
+  elif [ "$MATHLIB" == "OPENBLAS_CLAPACK" ] || [ "$MATHLIB" == "OPENBLAS_NO_F2C" ]; then
     if [[ ! $OPENBLASROOT ]]; then
       # Either the user specified --mathlib=OPENBLAS or we've autodetected the
       # system where OpenBLAS is the preferred option (the parser for
@@ -1345,7 +1345,11 @@ or try another math library, e.g. --mathlib=OPENBLAS (Kaldi may be slower)."
       OPENBLASINCDIR="/usr/include"
     fi
     echo "Your math library seems to be OpenBLAS from $OPENBLASROOT.  Configuring appropriately."
-    OPENBLASLIBS="-L$OPENBLASLIBDIR -l:libopenblas.a -l:libblas.a -l:liblapack.a -l:libf2c.a"
+    if [ "$MATHLIB" == "OPENBLAS_CLAPACK" ]; then
+        OPENBLASLIBS="-L$OPENBLASLIBDIR -l:libopenblas.a -l:libblas.a -l:liblapack.a -l:libf2c.a"
+    else
+        OPENBLASLIBS="-L$OPENBLASLIBDIR -l:libopenblas.a -l:libblas.a -l:liblapack.a"
+    fi
     echo "OPENBLASINC = $OPENBLASINCDIR" >> kaldi.mk
     echo "OPENBLASLIBS = $OPENBLASLIBS" >> kaldi.mk
     echo >> kaldi.mk