openfoam/wmake/rules/General/Gcc/c++
Mark Olesen c2697f466d CONFIG: update c++ standard, some compiler rules (partially addresses #2209)
- migrate to c++14 for most compilers *except* gcc.
  There are still many systems in use with gcc-4.8.5, which does not
  support c++14.

- initial rules for nvidia compilers (pgi is will soon be defunct).
  Not fully tested...

CONFIG: provide fallback value for the user directory name

- in containers may have an unset USER env variable.
  Default to 'user' to prevent ugly looking directory names.
2021-10-21 15:31:05 +02:00

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#------------------------------------------------------------------------------
# C++14 support with gcc-5 and later, but several systems (as of 2021)
# are still using gcc-4.8.4 (centos7, suse SLES12, ...)
#
# NOTE if your system gcc is new enough can simply use c++14 too.
#------------------------------------------------------------------------------
SUFFIXES += .C .cc .cpp .cxx
CC = g++ -std=c++11
c++ARCH =
c++DBUG =
c++OPT = -O2
ptFLAGS = -DNoRepository -ftemplate-depth-100
# - Standard warnings
# - Less restrictive warnings (may be needed for flex++, CGAL, etc.)
c++WARN = \
-Wall -Wextra -Wold-style-cast \
-Wnon-virtual-dtor -Wno-unused-parameter -Wno-invalid-offsetof \
-Wno-attributes -Wno-unknown-pragmas \
$(FOAM_EXTRA_CXXFLAGS)
c++LESSWARN = \
-Wno-old-style-cast -Wno-unused-local-typedefs -Wno-array-bounds \
-Wno-deprecated-declarations \
-fpermissive
#------------------------------------------------------------------------------