If only one of them is set, its value is used for both.

for Intel compilers on Linux has been removed: we do

not have recent experience but the generic defaults now chosen are

the same as those previously special-cased for

If necessary, override the defaults on the

includes OpenBLAS in its search (before ATLAS and a generic

BLAS).  This follows recent versions of the

Source package installation is by default

the package is installed into a temporary location under the final

library directory and moved into place once the installation is

complete.  The benefit is that partially-installed packages are

The overall default is set by environment variable

file to opt out.  (That opt-out is a temporary

measure which may be withdrawn in future.)

The interpretation of source code with extension

is changing.  Previously this denoted FORTRAN 77 code, but current

compilers no longer have a FORTRAN 77 mode and interpret it as

Fortran 90 (or later where supported) code.

Legal FORTRAN 77 code is also legal fixed-form Fortran 9x; however

this change legitimizes the use of later features, in particular

or C++ compiler rather than the Fortran 9x compiler.  This is

consistent with fixed-form Fortran code and allows mixing of C++

and free-form Fortran on most platforms.

Consequentially, a package which includes free-form Fortran 9x

version if they also include C++ code) in

fortunately on almost all current platforms they are the same

both fixed-form and free-form Fortran code unless

both fixed-form and free-form Fortran, for use in

which (where supported) strips installed shared object(s): this

can also be achieved by setting the environment variable

static and shared libraries installed under

These are most useful on platforms using GNU

There is more support for installing UTF-8-encoded packages

in a strict Latin-1 locale (and probably for other Latin locales):

expressions (including those in macros) before checking the

evaluating the expressions and in the expanded contents.

by commas and with regular quotes such as to be useful as argument