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llvm-project/clang/test/Driver/compilation_database.c

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[clang] Get rid of "%T" expansions The %T lit expansion expands to a common directory shared between all the tests in the same directory, which is unexpected and unintuitive, and more importantly, it's been a source of subtle race conditions and flaky tests. In https://reviews.llvm.org/D35396, it was agreed that it would be best to simply ban %T and only keep %t, which is unique to each test. When a test needs a temporary directory, it can just create one using mkdir %t. This patch removes %T in clang. Differential Revision: https://reviews.llvm.org/D36437 llvm-svn: 310950
2017-08-16 03:47:06 +08:00
// RUN: mkdir -p %t && cd %t
Compilation database test: don't try to output to CWD Summary: Write output from compilation database test to %T rather than the working dir. Sometimes CWD isn't writable! Also specify no-canonical-prefixes so that clang has 'clang' in the name. Reviewers: bkramer Subscribers: joerg, cfe-commits Differential Revision: https://reviews.llvm.org/D27504 llvm-svn: 288892
2016-12-07 17:19:07 +08:00
// RUN: %clang -MD -MP --sysroot=somewhere -c -x c %s -xc++ %s -Wall -MJ - -no-canonical-prefixes 2>&1 | FileCheck %s
// RUN: not %clang -c -x c %s -MJ %s/non-existant -no-canonical-prefixes 2>&1 | FileCheck --check-prefix=ERROR %s
Allow clang to write compilation database records. When integrating compilation database output into existing build systems, two approaches dominate so far. Ad-hoc implementation of the JSON output rules or using compiler wrappers. This patch adds a new option "-MJ foo.json" which gives a slightly cleaned up compilation record. The output is a fragment, i.e. you still need to add the array markers, but it allows multiple files to be easy merged. This way the only change in a build system is adding the option with potentially a per-target output file and merging the files with something like (echo '['; cat *.o.json; echo ']' > compilation_database.json or some additional filtering to remove the trailing comma for strict JSON compliance. Differential Revision: https://reviews.llvm.org/D27140 llvm-svn: 288821
2016-12-07 00:33:22 +08:00
Compilation database test: don't try to output to CWD Summary: Write output from compilation database test to %T rather than the working dir. Sometimes CWD isn't writable! Also specify no-canonical-prefixes so that clang has 'clang' in the name. Reviewers: bkramer Subscribers: joerg, cfe-commits Differential Revision: https://reviews.llvm.org/D27504 llvm-svn: 288892
2016-12-07 17:19:07 +08:00
// CHECK: { "directory": "{{.*}}", "file": "[[SRC:[^"]+[/|\\]compilation_database.c]]", "output": "compilation_database.o", "arguments": ["{{[^"]*}}clang{{[^"]*}}", "-xc", "[[SRC]]", "--sysroot=somewhere", "-c", "-Wall",{{.*}} "--target={{[^"]+}}"]},
// CHECK: { "directory": "{{.*}}", "file": "[[SRC:[^"]+[/|\\]compilation_database.c]]", "output": "compilation_database.o", "arguments": ["{{[^"]*}}clang{{[^"]*}}", "-xc++", "[[SRC]]", "--sysroot=somewhere", "-c", "-Wall",{{.*}} "--target={{[^"]+}}"]},
Allow clang to write compilation database records. When integrating compilation database output into existing build systems, two approaches dominate so far. Ad-hoc implementation of the JSON output rules or using compiler wrappers. This patch adds a new option "-MJ foo.json" which gives a slightly cleaned up compilation record. The output is a fragment, i.e. you still need to add the array markers, but it allows multiple files to be easy merged. This way the only change in a build system is adding the option with potentially a per-target output file and merging the files with something like (echo '['; cat *.o.json; echo ']' > compilation_database.json or some additional filtering to remove the trailing comma for strict JSON compliance. Differential Revision: https://reviews.llvm.org/D27140 llvm-svn: 288821
2016-12-07 00:33:22 +08:00
// ERROR: error: compilation database '{{.*}}/non-existant' could not be opened:
int main(void) {
return 0;
}