Update from ALBERT to ALBERTA. Try to be more detailed about setting

of compiler-flags.

README

-ALBERTA:  an Adaptive multi Level finite element toolbox using 
-          Bisectioning refinement and Error control by Residual
-          Techniques
+ALBERTA  is an Adaptive multi-Level finite element toolbox using 
+         Bisectioning refinement and Error control by Residual
+         Techniques for scientific Applications.
 
 Contents
 ========
@@ -241,9 +241,8 @@ following options:
 	packages "gltools" and "GRAPE" .
 
   --with-PKG-name=NAME
-	The library is not called PKG, but NAME, e.g. "MesaGL" instead
-	of "GL", or "cxml" instead of "blas". Configure will then
-	search for "libNAME" instead of "libPKG".
+        Alter the default name of the package,
+        e.g. "--with-opengl-name=MesaGL" or "--with-blas-name=cxml".
 
   --with-PKG-dir=DIR
 	Search for header-files and for the library itself below DIR,
@@ -257,8 +256,8 @@ following options:
 	Use DIR as search-path for the include-files for PKG,
 	e.g. "--with-opengl-include=/usr/people/claus/software/include/".
 
-The following quotes the online-help obtained by running "configure
---help"
+The following quotes the relevant fragment of the online-help obtained
+by running "configure --help"
 
   --with-blas-name=NAME   use NAME as the name of the blas library (without
                           leading "lib" prefix and trailing suffix). Default:
@@ -300,8 +299,8 @@ The following quotes the online-help obtained by running "configure
                           (default: PREFIX/include/)
 
 
-IV. Compiler flags settings
-===========================
+IV. Compiler flags
+==================
 
 The default flags for the optimised libraries are "-O3" when using gcc
 and "-O" otherwise.
@@ -309,37 +308,78 @@ and "-O" otherwise.
 The default flags for the debugging-enabled libraries are
 "-O0 -ggdb -fno-inline -fno-builtin" with gcc and "-g" otherwise.
 
-You are strongly encouraged to change this. To do so, you can set the
-environment variables
+The relevant environment- respectively make-variables are
+
+CFLAGS
+  C-compiler flags used for _both_, optimised and debug enabled libraries
 
 ALBERTA_OPTIMISE_CFLAGS
+  C-compiler flags used fo the optimised library. They are prepended
+  to the CFLAGS variable.
+
 ALBERTA_DEBUG_CFLAGS
+  C-compiler flags used fo the debug enabled library. They are
+  prepended to the CFLAGS variable.
+
 FFLAGS
+  Fortran-compiler flags. They are separated from the CFLAGS because
+  in general the Fortran compiler can come from a different vendor
+  than the C-compiler in which case the flags understood by the
+  Fortran compiler are different from the flags understood by the
+  C-compiler.
 
-before you run configure. You can also set these variables on the
-command-line of the "configure" or the "make" program, e.g. with a recent
-gcc on a Pentium 4 you could use
+You have to consult the documentation for the compiler(s) you are using
+to determine the appropriate switches for your setup.
 
-configure ALBERTA_OPTIMISE_CFLAGS="-O3 -march=pentium4 -mfpmath=sse"
+There are three ways to set those flags:
 
-or (later, when building the libraries)
+a.) arguments to configure
+b.) environment variables (have to be defined _before_ running configure)
+c.) arguments to make
 
-make ALBERTA_OPTIMISE_CFLAGS="-O3 -march=pentium4 -mfpmath=sse"
+We recommend using a.).
 
-You have to consult the documentation for the compiler(s) you are using
-to determine the appropriate switches for your setup.
+Examples:
+---------
+
+1.) gcc with a Pentium 4
+
+  ./configure <blablabla> \
+     CFLAGS="-march=pentium4 -mfpmath=sse" \
+     FFLAGS="-march=pentium4 -mfpmath=sse" 
+  make
+  make install
+
+or (assuming a Bourne-shell)
+
+  CFLAGS="-march=pentium4 -mfpmath=sse"
+  FFLAGS="-march=pentium4 -mfpmath=sse" 
+  export CFLAGS FFLAGS
+
+  ./configure <blablabla>
+  make
+  make install
+
+or
 
-NOTE: if you use the CFLAGS-variable, then it's value will be prepended
-to the compiler flags at built-time. So using e.g.
+  ./configure <blablabla>
+  make CFLAGS="-march=pentium4 -mfpmath=sse" \
+    FFLAGS="-march=pentium4 -mfpmath=sse" 
+  make install
 
-make CFLAGS="-O3 -funroll-all-loops -g0" ALBERT_DEBUG_CFLAGS="-ggdb"
+2.) Pentium 4 with icc and with Intel "math kernel library" (BLAS
+implementation)
 
-will result in '-O3 -funroll-all-loops -g0 -ggdb' for the
-debug-enabled libraries. This might not be quite the thing you were
-aiming at.
+  ./configure <blablabla> \
+     CC=icc CFLAGS="-mcpu=pentium4" ALBERA_OPTIMISE_CFLAGS="-O3" \
+     ALBERTA_DEBUG_CFLAGS="-O0 -g" \
+     F77=ifc FFLAGS="-mcpu=pentum4 -O3" \
+     --with-blas-name=mkl --with-blas-lib=/opt/intel/mkl61/lib/32/
+  make
+  make install
 
-You still can use CFLAGS to set compiler flags used for both,
-optimising and debug-enabled objects.
+or set environment variables or use arguments to "make" as shown in
+example 1.)
 
 
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