- /usr/bin/{gcc,g++} normally just symlinks to clang/clang++
and may have unknown default flags.
For a gcc toolchain, it would be better to use a homebrew
installation.
For these cases, the compiler will need to be specified with
version=.. in WM_COMPILE_CONTROL.
For example, with "version=14", to select gcc-14, g++-14 from the
homebrew installation.
- needs a slight hack for locating the FlexLexer.h header.
Added into src/OSspecific/POSIX similar to how it is handled
in src/OSspecific/MSwindows
CONFIG: add simple config/detection support for libumpire (Linux)
- a partial selection from https://github.com/mrklein/openfoam-os-x
with adjustments. The primary purpose is to reduce header-level
incompatibilities and to provide a common set of make rules to allow
easier patching (or re-integration).
