In general all the basic functionality seems to work and removes some redundancy
and more complicated features in favor of borrowing infrastructure from LLVM
build configurations. Here's a quick summary of details and remaining issues:
* Testing has spanned Ubuntu 18.04 & 19.10, CentOS 7, RHEL 8, and
MacOS/darwin. Architectures include x86_64 and Arm. Without
access to Window nothing has been tested there yet.
* As we change file and directory naming schemes (i.e.,
capitalization) some odd things can occur on MacOS systems with
case preserving but not case senstive file system configurations.
Can be painful and certainly something to watch out for as any
any such changes continue.
* Testing infrastructure still needs to be tuned up and worked on.
Note that there do appear to be cases of some tests hanging (on
MacOS in particular). They appear unrelated to the build
process.
* Shared library configurations need testing (and probably fixing).
* Tested both standalone and 'in-mono repo' builds. Changes for
supporting the mono repo builds will require LLVM-level changes that
are straightforward when the time comes.
* The configuration contains a work-around for LLVM's C++ standard mode
passing down into Flang/F18 builds (i.e., LLVM CMake configuration would
force a -std=c++11 flag to show up in command line arguments. The
current configuration removes that automatically and is more strict in
following new CMake guidelines for enforcing C++17 mode across all the
CMake files.
* Cleaned up a lot of repetition in the command line arguments. It
is likely that more work is still needed to both allow for
customization and working around CMake defailts (or those
inherited from LLVM's configuration files). On some platforms agressive
optimization flags (e.g. -O3) can actually break builds due to the inlining
of templates in .cpp source files that then no longer are available for use
cases outside those source files (shows up as link errors). Sticking at -O2
appears to fix this. Currently this CMake configuration forces this in
release mode but at the cost of stomping on any CMake, or user customized,
settings for the release flags.
* Made the lit tests non-source directory dependent where appropriate. This is
done by configuring certain test shell files to refer to the correct paths
whether an in or out of tree build is being performed. These configured
files are output in the build directory. A %B substitution is introduced in
lit to refer to the build directory, mirroring the %S substitution for the
source directory, so that the tests can refer to the configured shell scripts.
Co-authored-by: David Truby <david.truby@arm.com>
Original-commit: flang-compiler/f18@d1c7184159
Reviewed-on: https://github.com/flang-compiler/f18/pull/1045
* Clause 13 (Input/output editing) syntax and semantic checking
Diagnose:
- all clause syntax errors (independent of normal parsing)
- all clause constraints
- use of non-standard extensions under -Mstandard
- obvious program requirement violations
The code:
- is invoked for both format statement and I/O statement constant formats
- should be useable by the runtime I/O library for runtime formats
- is able to recover from errors
- is able to diagnose multiple errors in a single format
- has accurate markers for errors
- can process (fixed character size) Hollerith strings
- generates reasonable error messages for known error scenarios
- should not require C++ run-time library support
The code is templatized for use with fixed size character kind={1,2,4} input,
but only the kind=1 variant is actually exercised.
* Review update.
* Review update.
* Review update.
* Improve error processing of unterminated formats.
Original-commit: flang-compiler/f18@c04b7518df
Reviewed-on: https://github.com/flang-compiler/f18/pull/498
* Clause 12 semantics
Check all constraints not otherwise checked during parsing or label scope
validation, except for C1201, C1231, and C1233-5. Obvious program
requirements are also checked, except for 12.6.2.2 constant format string
validation.
Original-commit: flang-compiler/f18@e4ec343618
Reviewed-on: https://github.com/flang-compiler/f18/pull/427
