Commit Graph

7 Commits

Author SHA1 Message Date
John Ericson 5c3347aa8b [flang] Use `GNUInstallDirs` to support custom installation dirs.
Extracted from D99484. My new plan is to start from the outside and work
inward.

Reviewed By: stephenneuendorffer

Differential Revision: https://reviews.llvm.org/D115569
2021-12-31 18:58:35 +00:00
Stuart Ellis f52fc591fa [flang][driver] Add support for Frontend Plugins
Introducing a plugin API and a simple HelloWorld Plugin example.
This patch adds the `-load` and `-plugin` flags to frontend driver and
the code around using custom frontend actions from within a plugin
shared library object.

It also adds to the Driver-help test to check the help option with the
updated driver flags.

Additionally, the patch creates a plugin-example test to check the
HelloWorld plugin example runs correctly. As part of this, a new CMake
flag (`FLANG_BUILD_EXAMPLES`) is added to allow the example to be built
and for the test to run.

This Plugin API has only been tested on Linux.

Reviewed By: awarzynski

Differential Revision: https://reviews.llvm.org/D106137
2021-08-12 11:42:16 +01:00
Andrzej Warzynski 1b749c0cb5 [flang][driver] Remove unnecessary CMake dependencies (nfc)
Remove clangFrontend from the list of dependencies. These should have
been removed in: 8d51d37e06. See also
https://reviews.llvm.org/D87774.
2020-11-20 16:44:11 +00:00
Andrzej Warzynski 42e89ab2a6 [flang] Fix CMake bug in the definition of flang-new
Recent patch that improved Flang's compatibility with respect to how LLVM
dynamic libraries should be linked (and specified in CMake recipes),
introduced a bug in the definition of `flang-new`:
  * https://reviews.llvm.org/D87893
More specifically, `add_flang_tool` does not support the
`LINK_COMPONENTS` CMake argument.  Instead, one should set
`LLVM_LINK_COMPONENTS` before calling `add_flang_tool`.

This patch reverts the change for `flang-new` from
https://reviews.llvm.org/D87893, and instead:
  * sets `LLVM_LINK_COMPONENTS`
  * calls `clang_target_link_libraries` to add Clang dependencies

Differential Revision: https://reviews.llvm.org/D89403
2020-10-14 19:24:10 +01:00
Serge Guelton cde06f783c [flang] Make flang build compatible with LLVM dylib
Harmonize usage of LLVM components througout Flang.

Explicit LLVM Libs where used across several CMakeFIles, which led to
incompatibilities with LLVM shlibs.
Fortunately, the LLVM component system can be relied on to harmoniously handle
both cases.

Differential Revision: https://reviews.llvm.org/D87893
2020-10-14 14:27:25 +02:00
Andrzej Warzynski b9a2837f16 [flang][driver] Add missing dependency (shared library builds, NFC)
`flang-new` depends on libclangFrontend (it uses DiagnosticConsumer
classes from there). This patch adds the missing dependency in CMake.

clang::TextDiagnosticBuffer is only reported as missing when compiling
`flang-new` with BUILD_SHARED_LIBS=ON. This symbol is linked in
statically with libflangFrontend when BUILD_SHARED_LIBS=OFF.
2020-09-24 21:11:32 +01:00
Caroline Concatto 257b29715b [flang][driver] Add the new flang compiler and frontend drivers
Summary:

This is the first patch implementing the new Flang driver as outlined in [1],
[2] & [3]. It creates Flang driver (`flang-new`) and Flang frontend driver
(`flang-new -fc1`). These will be renamed as `flang` and `flang -fc1` once the
current Flang throwaway driver, `flang`, can be replaced with `flang-new`.

Currently only 2 options are supported: `-help` and `--version`.

`flang-new` is implemented in terms of libclangDriver, defaulting the driver
mode to `FlangMode` (added to libclangDriver in [4]). This ensures that the
driver runs in Flang mode regardless of the name of the binary inferred from
argv[0].

The design of the new Flang compiler and frontend drivers is inspired by it
counterparts in Clang [3]. Currently, the new Flang compiler and frontend
drivers re-use Clang libraries: clangBasic, clangDriver and clangFrontend.

To identify Flang options, this patch adds FlangOption/FC1Option enums.
Driver::printHelp is updated so that `flang-new` prints only Flang options.
The new Flang driver is disabled by default. To enable it, set
`-DBUILD_FLANG_NEW_DRIVER=ON` when configuring CMake and add clang to
`LLVM_ENABLE_PROJECTS` (e.g. -DLLVM_ENABLE_PROJECTS=“clang;flang;mlir”).

[1] “RFC: new Flang driver - next steps”
http://lists.llvm.org/pipermail/flang-dev/2020-July/000470.html
[2] “RFC: Adding a fortran mode to the clang driver for flang”
http://lists.llvm.org/pipermail/cfe-dev/2019-June/062669.html
[3] “RFC: refactoring libclangDriver/libclangFrontend to share with Flang”
http://lists.llvm.org/pipermail/cfe-dev/2020-July/066393.html
[4] https://reviews.llvm.org/rG6bf55804924d5a1d902925ad080b1a2b57c5c75c

co-authored-by: Andrzej Warzynski <andrzej.warzynski@arm.com>

Reviewed By: richard.barton.arm, sameeranjoshi

Differential Revision: https://reviews.llvm.org/D86089
2020-09-11 10:55:54 +01:00