- for compilers such as gcc and clang, may have several different
variants installed on the computer. Use WM_COMPILER_CONTROL to
specify the preferred variant.
Eg,
WM_COMPILER=Gcc
WM_COMPILER_CONTROL="version=8"
will compile with "gcc-8" and "g++-8"
Good practice would be to tag output directory names with the
version too. Eg
WM_COMPILER=Clang110
WM_COMPILER_CONTROL="version=11.0"
STYLE: modify message for change of gcc -> clang (darwin)
- largely as per patch from Jong-Gwan (Jason) Do
NB: the intel-one setup adds in paths for intelmpi.
Its mpicc version does not harmonize with the OpenFOAM
system openmpi setup (using mpicc --showme:link).
Needs adjustment, or use intelmpi instead.
- update name mappings for newer gcc, clang versions
- prefix FOAM_MPI and library directories with 'sys-' for system
versions for uniform identication.
WM_MPLIB | libdir (FOAM_MPI) | old naming |
SYSTEMMPI | sys-mpi | mpi |
SYSTEMOPENMPI | sys-openmpi | openmpi-system |
- prefix preferences with 'prefs.' to make them more easily
identifiable, and update bin/tools/create-mpi-config accordingly
Old name: config.{csh,sh}/openmpi
New name: config.{csh,sh}/prefs.openmpi
- additional mpi preferences now available:
* prefs.intelmpi
* prefs.mpich
...
CONFIG: added hook for EASYBUILDMPI (eb-mpi), somewhat like USERMPI
- EasyBuild uses mpicc when compiling, so no explicit wmake rules are
used
ENH: support different major versions for system openmpi
- for example, with
WM_MPLIB=SYSTEMOPENMPI2
defines FOAM_MPI=sys-openmpi2 and thus creates lib/sys-openmpi2
ENH: centralize handling of mpi as 'mpi-rules'
Before:
sinclude $(GENERAL_RULES)/mplib$(WM_MPLIB)
sinclude $(DEFAULT_RULES)/mplib$(WM_MPLIB)
ifeq (,$(FOAM_MPI_LIBBIN))
FOAM_MPI_LIBBIN := $(FOAM_LIBBIN)/$(FOAM_MPI)
endif
After:
include $(GENERAL_RULES)/mpi-rules
- also allows variants such as SYSTEMOPENMPI2 to be handled separately
- introduce WM_COMPILE_CONTROL variable to convey control information
into the build rules.
The convention (as per spack):
- '+' to select a feature
- '~' to deselect a feature
Eg, to select the gold linker, and disable openmp
(spaces are not required):
WM_COMPILE_CONTROL="+gold ~openmp"
CONFIG: accept FOAM_EXTRA_LDFLAGS for AMD, gold, Mingw linkers
CONFIG: generalize PROJECT_LIBS (-ldl used almost universally)
- with 1906, OpenFOAM is purely C++ code and the last toolchain bits C
code have been avoided. Thus relax the wmake C rule for including
WM_COMPILE_OPTION. This makes it much easier to add different
compiler options with fewer files.
For example, for Broadwell-specific options:
cd wmake/rules/linux64Gcc
cp c++Opt c++OptBdw
edit this file and then use WM_COMPILE_OPTION=OptBdw
- ensure that WM_COMPILE_OPTION is always non-empty
- Note: mpich now builds libmpi.so instead of libmpich.so
- define both -DMPICH_SKIP_MPICXX and -DOMPI_SKIP_MPICXX regardless of
using openmpi or mpich. This simplifies the files and does not harm.
- in addition to managing different vendors and versions, it may also
be necessary or desirable to have a particular variant
(eg, profiling, release, etc).
Devise a new meaningful name for the variant and create a
corresponding wmake rule.
Eg, SYSTEMOPENMPI-profiling with a corresponding
"wmake/rules/linux64Gcc/mplibSYSTEMOPENMPI-profiling" file
that has suitable content for your system.
CONFIG: intel-mpi use intel64/ paths only for config and wmake rules (#1153)
- previously adjusted the config files, but missed the changes
required for the wmake rules too.
Now simply migrate to using "intel64/{include,bin,lib}"
instead of the older naming "{include,bin,lib}64"
These changes work since at least intel-mpi 2015 (5.x), but possibly
earlier as well
- instead of
WM_COMPILER=GccKNL WM_COMPILE_OPTION=Opt
-> linux64GccKNLDPInt32Opt
now specify
WM_COMPILER=Gcc WM_COMPILE_OPTION=OptKNL
-> linux64GccDPInt32OptKNL
This makes it easier (and more obvious) for adding different tweaks
without needing to generate too many files.
Eg,
cd wmake/rules/linux64Gcc
cp cOpt cOptBdw
cp c++Opt c++OptBdw
edit these two files and then use WM_COMPILE_OPTION=OptBdw
CONFIG: provide some default c/c++ flags in General compiler rules
- can make is easier when deriving new compile options, and ensures
that '-02' is enabled as an initial default.
- primary points for an external user are the polyMesh constructor
- add config info for gcc-7.3.0
COMP: intel-2017. Ignore unknown pragmas. Disambiguate method resolution.
- required if there is no system openmp and libomp or libgomp are
only found in the clang hierarchy
STYLE: add some notes in the openmp rules.
- the _OPENMP macro is now used in low-level testing files
The change from C++0x to C++11 allows all of C++11 functionality to be
used in OpenFOAM, in particular constructor delegation which avoids code
duplication or constructor helper functions. However, this also means a
change to the minimum gcc version supported which is now 4.7 rather than
4.5.
Note that gcc-4.7 does not support the entire C++11 standard but does
support all of the functionality currently needed for further OpenFOAM
development. The minimum gcc-version which supports the entire C++11
standard is 4.8 which is now the recommended minimum gcc version.
which may be optionally overridden by version-specific rules.
For example the default rules for gcc on GNU/Linux x86_64 are in the
wmake/rules/linux64Gcc directory. If there is a need to change any of
the rules for a specific version of gcc, e.g. gcc-4.8.4 the directory
wmake/rules/linux64Gcc48 may be created into which any of the language
files may be provided containing the rules to override the defaults.
This resolves a whole range of issues and work-arounds with earlier
releases. This version of icpc is more or less compatible with the
latest gcc and clang compilers and only required one hack to avoid
warnings from PackedBoolList.H.
- To-do:
wmake/rules/General/bison
wmake/rules/General/btyacc
wmake/rules/General/btyacc++
wmake/rules/General/byacc
wmake/rules/General/moc
wmake/rules/General/yacc
but these files have <TAB>
- main mplib rules located in GENERAL_RULES with specializations
(if any) under RULES. Modest change in a few options files, but
cleans up the rules directories.
previously in options:
include $(RULES)/mplib$(WM_MPLIB)
now in options:
sinclude $(GENERAL_RULES)/mplib$(WM_MPLIB)
sinclude $(RULES)/mplib$(WM_MPLIB)
For GNU make it would be permissible to write both in a single line.
- otherwise /lib/cpp may need a different library binding than
currently available and results in this type of error:
/usr/lib64/gcc/x86_64-suse-linux/4.4/cc1:
/data/app/OpenFOAM/ThirdParty-1.6.x/platforms/linux64/gcc-4.3.3/lib64/libstdc++.so.6:
version `GLIBCXX_3.4.11' not found (required by
/usr/lib64/libppl_c.so.2)
ENH: remove unused flex++ rule for SiCortex that was identical to the
general one anyhow.
