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llvm-project/flang/lib/FrontendTool/CMakeLists.txt

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[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 17:17:31 +08:00
add_flang_library(flangFrontendTool
ExecuteCompilerInvocation.cpp
[flang][driver] Add missing dependency in CMake files The Flang driver depends on libclangBasic. This means, among other things, that some of the tablegen files (e.g. diagnostic definitions) need to be generated before various libclangBasic header files can be included (e.g. DiagnosticIDs.h). If we are lucky, libclangBasic is indeed built before various flang driver libraries that depend on it are. This patch makes sure that this is deterministic - i.e. libclangBasic is built before the Flang driver libraries are. Differential Revision: https://reviews.llvm.org/D88110
2020-09-23 02:38:04 +08:00
DEPENDS
clangBasic
[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 17:17:31 +08:00
LINK_LIBS
[Flang][Driver] Add infrastructure for basic frontend actions and file I/O This patch introduces the dependencies required to read and manage input files provided by the command line option. It also adds the infrastructure to create and write to output files. The output is sent to either stdout or a file (specified with the `-o` flag). Separately, in order to be able to test the code for file I/O, it adds infrastructure to create frontend actions. As a basic testable example, it adds the `InputOutputTest` FrontendAction. The sole purpose of this action is to read a file from the command line and print it either to stdout or the output file. This action is run by using the `-test-io` flag also introduced in this patch (available for `flang-new` and `flang-new -fc1`). With this patch: ``` flang-new -test-io input-file.f90 ``` will read input-file.f90 and print it in the output file. The `InputOutputTest` frontend action has been introduced primarily to facilitate testing. It is hidden from users (i.e. it's only displayed with `--help-hidden`). Currently Clang doesn’t have an equivalent action. `-test-io` is used to trigger the InputOutputTest action in the Flang frontend driver. This patch makes sure that “flang-new” forwards it to “flang-new -fc1" by creating a preprocessor job. However, in Flang.cpp, `-test-io` is passed to “flang-new -fc1” without `-E`. This way we make sure that the preprocessor is _not_ run in the frontend driver. This is the desired behaviour: `-test-io` should only read the input file and print it to the output stream. co-authored-by: Andrzej Warzynski <andrzej.warzynski@arm.com> Differential Revision: https://reviews.llvm.org/D87989
2020-10-24 19:33:19 +08:00
flangFrontend
[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 17:17:31 +08:00
clangBasic
clangDriver
LINK_COMPONENTS
Option
Support
)