81e8a1e59e
This patch is part of a series to support driver-managed module builds. It adds support for discovery of module dependencies from within the driver and for generation of the module dependency graph. Source inputs provided on the command line can import modules defined in the Standard library module manifest, which are then scanned on demand. The dependency scan and graph support both Clang modules and C++ named modules. The generated dependency graph can be output in Graphviz DOT format as a remark. RFC discussing linking the driver against additional libraries: https://discourse.llvm.org/t/rfc-driver-link-the-driver-against-clangdependencyscanning-clangast-clangfrontend-clangserialization-and-clanglex RFC for driver-managed module builds: https://discourse.llvm.org/t/rfc-modules-support-simple-c-20-modules-use-from-the-clang-driver-without-a-build-system
102 lines
3.9 KiB
C++
102 lines
3.9 KiB
C++
// This test checks the on-demand scanning of system inputs, in particular:
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// 1. System inputs are scanned only when needed.
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// 2. Imports between system modules are supported.
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// RUN: split-file %s %t
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// The standard library modules manifest (libc++.modules.json) is discovered
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// relative to the installed C++ standard library runtime libraries
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// We need to create them in order for Clang to find the manifest.
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// RUN: rm -rf %t && split-file %s %t && cd %t
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// RUN: mkdir -p %t/Inputs/usr/lib/x86_64-linux-gnu
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// RUN: touch %t/Inputs/usr/lib/x86_64-linux-gnu/libc++.so
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// RUN: touch %t/Inputs/usr/lib/x86_64-linux-gnu/libc++.a
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// RUN: sed "s|DIR|%/t|g" %t/libc++.modules.json.in > \
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// RUN: %t/Inputs/usr/lib/x86_64-linux-gnu/libc++.modules.json
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// RUN: mkdir -p %t/Inputs/usr/lib/share/libc++/v1
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// RUN: cat %t/std.cppm > %t/Inputs/usr/lib/share/libc++/v1/std.cppm
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// RUN: cat %t/std.compat.cppm > %t/Inputs/usr/lib/share/libc++/v1/std.compat.cppm
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// RUN: cat %t/core.cppm > %t/Inputs/usr/lib/share/core.cppm
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// RUN: cat %t/unused.cppm > %t/Inputs/usr/lib/share/unused.cppm
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// RUN: %clang -std=c++20 \
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// RUN: -fmodules-driver -Rmodules-driver \
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// RUN: -stdlib=libc++ \
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// RUN: -resource-dir=%t/Inputs/usr/lib/x86_64-linux-gnu \
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// RUN: --target=x86_64-linux-gnu \
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// RUN: -fmodules-cache-path=%t/modules-cache \
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// RUN: %t/main.cpp %t/foo.cpp \
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// RUN: -### 2>&1 \
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// RUN: | sed 's:\\\\\?:/:g' \
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// RUN: | FileCheck %s -DPREFIX=%/t
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// CHECK: digraph "Module Dependency Graph" {
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//
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// CHECK: "[[PREFIX]]/main.cpp-x86_64-unknown-linux-gnu" [fillcolor=3, label="{ Filename: [[PREFIX]]/main.cpp | Triple: x86_64-unknown-linux-gnu }"];
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// CHECK-NEXT: "[[PREFIX]]/foo.cpp-x86_64-unknown-linux-gnu" [fillcolor=3, label="{ Filename: [[PREFIX]]/foo.cpp | Triple: x86_64-unknown-linux-gnu }"];
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// CHECK-NEXT: "std-x86_64-unknown-linux-gnu" [fillcolor=2, label="{ Filename: {{.*}} | Module type: Named module | Module name: std | Triple: x86_64-unknown-linux-gnu }"];
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// CHECK-NEXT: "std.compat-x86_64-unknown-linux-gnu" [fillcolor=2, label="{ Filename: {{.*}} | Module type: Named module | Module name: std.compat | Triple: x86_64-unknown-linux-gnu }"];
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// CHECK-NEXT: "core-x86_64-unknown-linux-gnu" [fillcolor=2, label="{ Filename: {{.*}} | Module type: Named module | Module name: core | Triple: x86_64-unknown-linux-gnu }"];
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//
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// CHECK: "std-x86_64-unknown-linux-gnu" -> "[[PREFIX]]/main.cpp-x86_64-unknown-linux-gnu";
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// CHECK-NEXT: "std-x86_64-unknown-linux-gnu" -> "[[PREFIX]]/foo.cpp-x86_64-unknown-linux-gnu";
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// CHECK-NEXT: "std-x86_64-unknown-linux-gnu" -> "std.compat-x86_64-unknown-linux-gnu";
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// CHECK-NEXT: "std.compat-x86_64-unknown-linux-gnu" -> "[[PREFIX]]/main.cpp-x86_64-unknown-linux-gnu";
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// CHECK-NEXT: "core-x86_64-unknown-linux-gnu" -> "[[PREFIX]]/foo.cpp-x86_64-unknown-linux-gnu";
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// CHECK-NEXT: }
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//--- main.cpp
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import std;
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import std.compat;
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//--- foo.cpp
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import std;
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import core;
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//--- std.cppm
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export module std;
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//--- std.compat.cppm
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export module std.compat;
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import std;
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// The module 'core' is isn't really a system module in libc++ or libstdc++.
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// This is only to test that any module marked with '"is-std-library": true' can
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// be imported on demand.
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//--- core.cppm
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export module core;
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//--- unused.cppm
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export module unused;
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//--- libc++.modules.json.in
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{
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"version": 1,
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"revision": 1,
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"modules": [
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{
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"logical-name": "std",
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"source-path": "../share/libc++/v1/std.cppm",
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"is-std-library": true
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},
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{
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"logical-name": "std.compat",
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"source-path": "../share/libc++/v1/std.compat.cppm",
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"is-std-library": true
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},
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{
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"logical-name": "core",
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"source-path": "../share/core.cppm",
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"is-std-library": true
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},
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{
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"logical-name": "unused",
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"source-path": "../share/unused.cppm",
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"is-std-library": true
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}
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]
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}
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