Call the C preprocessor through the C compiler rather than calling it
directly.
This required the definition of a new ocamltest variable,
ocaml_filetype_flag, which makes it possible to override the filetype
inferred by the compiler from the extnesion of the source file.
The Graphics library is now distributed as a separate package.
The sources are at https://github.com/ocaml/graphics .
Signed-off-by: Jeremie Dimino <jeremie@dimino.org>
This commit removes support for gprof-based profiling (the -p option to ocamlopt). It follows a discussion on the core developers' list, which indicated that removing gprof support was a reasonable thing to do. The rationale is that there are better easy-to-use profilers out there now, such as perf for Linux and Instruments on macOS; and the gprof support has always been patchy across targets. We save a whole build of the runtime and simplify some other parts of the codebase by removing it.
Most of the time, the C preprocessor needs to be invoked through the C
compiler, e.g. so that the paths to the header files are resolved properly.
In some cases, though, we really need to be able to call the C
preprocessor directly, just to expand macros in .ml files (this only
happens in the testsuite, at the moment). In those cases, it is
simply impossible to call the C preprocessor through the compiler,
e.g. because this would require the input files to have a '.c'
extension, which the OCaml compiler would misinterprete as meaning this file
should be compiled with the C compiler.
Thus, this commit clarifies the distinction between CPP and DIRECT_CPP
and provides both variables to the build system. The ocamltest build system
is also updated to take advantage of this.
We rely on autoconf's macros to detect how to call the C preprocessor
via the C compiler, except for the MSVC port where its value is hard-coded
to guarantee backward compatibility.
--disable-unix-lib, --disable-vmthreads and --disable-str-lib added to
prevent building these three libraries.
ocamldoc, the debugger and caml-tex are automatically disabled if their
prerequisites are not built. Using --enable-debugger and
--enable-ocamldoc will result in errors if these tools cannot be built.
Sébastien Hinderer
Jérémie Dimino
Mark Shinwell
Nicolás Ojeda Bär
David Allsopp