During configuration some of the values for CMake properties (compiler
flags etc.) may be changed either by the user (through command line
parameters or option files), or by the configuration script itself
(setting more aggressive options or detailed debugging for instance).
This change writes many of the relevant values back into the cache so
they are available for introspection (using e.g. ccmake) or when the
rerunning the configuration without specifying all options.
If the library is found, but dune.module is not, we really should give
an error because the #ifdefs in the code will not work as intended.
Print the locations where we expect the library to appear to the console
for better tracking.
As of 2013-09 the DUNE code that reads dune.module is not MultiArch-
aware. Thus, for a 64-bit platform it will look in lib/ on Debian and
lib64/ on RHEL.
Some components are not yet MultiArch-aware and installs to either
lib/ (Debian) or lib64/ (RHEL) on 64-bit platforms. If we need to
interface with these components, then it is nice to have such a
variable set together with the regular detection code.
The convention is to use uppercase names, in particular our own
./configure script uses this, so we should at least allow it here
(in addition to the old way for backward compatibility)
If we set a default search path ourself, then this will be used if we
specify a SuiteSparse_ROOT with error! Instead, we should just leave
our SuiteSparse_SEARCH_PATH variable empty and then let CMake fill in
its defaults. If there is a directory specified on the other hand
(indicating that we want exactly that location), only use that and
turn all the default paths completely off.
If you test the contents of a variable, this is not necessarily true
in CMake (since the contents here is a path, and not a variable name;
the default test is "does this variable exist", not "is this a non-
empty string" like in shell script)
If an alternate compiler is specified, then check if this is actually
executable before assigning it so that we don't end up with specifying
an empty name to CMake. If the path does not exist, it will be preserved
so that CMake will complain with an easily identifiable error message.
Previously, specifying the compiler name with a variable
to configure ("configure CC=gcc") lead to CMake complaining
that <builddir>/$CC was not a valid path. This patch fixes
this by extracting the full path with "which <compiler>".
Should fix issue #355.
As of 2013-09 the DUNE code that reads dune.module is not MultiArch-
aware. Thus, for a 64-bit platform it will look in lib/ on Debian and
lib64/ on RHEL.
Some components are not yet MultiArch-aware and installs to either
lib/ (Debian) or lib64/ (RHEL) on 64-bit platforms. If we need to
interface with these components, then it is nice to have such a
variable set together with the regular detection code.
this is required to use the exception code of opm-core in
opm-material. Also, the Dune prerequisites of opm-material can be
removed once PR #345 is merged into opm-core...
If we have checked out a newer Eigen3 directory in a sibling directory
to ours, assume that this is because the system version is obsolete and
that we want to use this one instead.
Eigen3 is a template-library, so we must compile the source code
directly together with ours instead of linking to a library.
If the build script gives us the location of a "built" Eigen3,
meaning a directory in which CMake has been run, locate the true
source directory from the cache entries.
The previous version may have ended up in lib64/ instead of lib/;
now we remove the arch-specific suffix from the path, and always
use the no-arch version.
dune.module does not contain any paths to architecture-specific
binaries. It is therefore always installed in no-arch lib/ directory.
Thus, there is no need to have a variable for this, and there was
no other users of this variable either.
If Boost is installed in say /usr/include/boost141 and
/usr/lib64/boost141, then there is no root you can specify to pick
them both up. However, whereas Autotools uses --with-boost and
--with-boost-libdir, FindBoost in CMake changes to using two different
variables: BOOST_INCLUDEDIR and BOOST_LIBRARYDIR. Using the header
directory for BOOST_ROOT will not work (in particularily not with
old CMake versions).
CMake does not like that you specify the compiler with the environment
variables, instead preferring that you set them as cache variables.
This layer translate between the names of the the two.
Header and library directory may be specified separately by using the
variables e.g. OPM_CORE_INCLUDE_DIR and OPM_CORE_LIB_DIR. These override
even the OPM_CORE_ROOT. This allows us to use a backported version which
uses versioned directory names.
If the option USE_VERSIONED_DIR is set to ON (default is OFF), then
most files are installed in a ${suite}-${label}/ subdirectory
(e.g. header files go in "/usr/include/opm-2013.03/"). This enables
us to easily install backports of newer versions on systems which
have a system package for an older one, without getting conflicts.
Getting uppercase of a string can be done in a way that is compatible
with Bash 3.2. This creates a dependency on the `tr` utility, but I
reckon it will/can be available everywhere Bash 3.2 is.
If we are using the Apple toolchain on MacOS X, we must use the
newer runtime and not the old GCC 4.2 fork, in order to get the
C++11 library features (such as std::shared_ptr).
There is no SuiteSparse headers or libraries in
/System/Library/Frameworks/Accelerate.framework on MacOS X, so adding
this directive won't contribute anything other than compiler warnings.
The earlier code assumed that the version information always follows
the full file path; this code splits the path up into various parts
so that this may be changed.
for me, it was completely broken. (it worked fine if you did not want
to use it, though.) Now it (hopefully) follows the standard OPM
variable naming conventions, allows to use the internal SuperLU BLAS
library, and works fine if superLU is not installed on a system-wide
basis.
v2: cache the POST_2005 variable to make writing it to config.h more
reliable (on my kubuntu 13.04 system it did not work without it)
v3: re-add a proper "post 2005" check from newer versions of the dune tests
Seems like I forgot to include the "CheckCSourceCompiles" macro before
using it. Since it worked for me before, I'm wondering what made this
happen. Anyway, it should now work correctly in all cases.
Some features, such as the Fortran wrappers, are enabled by options,
and it may be usable to have those set in a common definition file.
However, as these features are included conditionally based on use,
their option variables may not exist in other projects, giving a CMake
warning for them.
Here we list such variables too. Reading them at the end corresponds
to the Autotools convention of ignoring unknown --enable-xxx options.
v2: incorporate Roland's nitpicks (I hope)
v3: It was decided that it's better to change the default behavior
v4: make sure the CMake syntax is correct even if the value of the
variable contains spaces (if it contains double quotes it's a
different matter, but that's pretty much a corner case, IMHO)
v5: properly escape backslash and double quote characters in the cmake
syntax
The old version invoked a Fortran compiler to figure out the bindings
necessary to link to a Fortran function. This creates a dependency on
having a Fortran compiler, even though the project may not have any
Fortran source it needs to compile!
Also, the Fortran compiler that is installed on the system may not be
the same as was used to compile the library anyway, so we are not even
sure that this is correct!
Furthermore, FindLAPACK operates on the assumption that names in that
library is suffixed with a single underscore, so if that is not correct,
we won't find any of the functions in that library anyway!
Thus, this patch enables us to assume that appending an underscore is
the right thing to do without using the compiler. This option is off by
default, but can be activated with USE_UNDERSCORING=ON (named after the
GFortran option).
This puts a test into the ${project}-config.cmake file which warns
if the client project is built with a variable which is incompatible
with the build of opm-core.
Consider this minimal project:
cmake_minimum_required (VERSION 2.8)
set (HAVE_MPI 1)
find_package (opm-core)
If linked with `-Dopm-core_DIR=` path to an opm-core tree which is
build *without* MPI-support, this will issue a warning when building
the client project.
This doesn't catch all cases (if a variable isn't defined, we cannot
know if it is an omission or if it has intentionally been left blank),
but at least it catches some.
If we have a parallel ALUGrid, then we must also link with METIS. If
METIS is not available, then parallel ALUGrid should be disabled. If
we have a serial-only ALUGrid, then METIS is not required.
Setting CMAKE_DISABLE_FIND_PACKAGE_xxx flag should make find_package
not doing anything, but this does not seem to work with older versions
of CMake. Anyway, we can test this flag and make sure that we don't
call find_package in that case.
Also includes a check for both upper- and same-case versions of found
flag, as some modules, most notably Boost, does not set the upper-case
version of their _FOUND flag; this tests for both.
Roland Kaufmann
Markus Blatt
Bård Skaflestad
Tor Harald Sandve
Andreas Lauser
Andreas Lauser