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* Restore tolerance of self-referencing phony build statementsBrad King2017-09-081-0/+13
| | | | | | | | | | | | | | | | | | | | Since commit v1.8.0^2~3^2~1 (Teach RecomputeDirty to detect cycles in the build graph, 2015-11-13) we correctly reject self-referencing phony build statements like build a: phony a as cycles. Unfortunately this breaks support for CMake 2.8.12.x and 3.0.x because those versions incorrectly produce edges of this form (that we used to tolerate). In order to preserve compatibility with those CMake versions we need to restore tolerance of these edges. Add a special case to the manifest parser to filter out self-referencing inputs of phony edges of the form produced by those CMake versions. Warn by default, but add a `-w phonycycle={err,warn}` option to make it an error. Fixes: #1322
* Drop unnecessary cycle detection in Plan::AddTargetBrad King2017-06-191-53/+0
| | | | | We now detect and reject cycles in DependencyScan::RecomputeDirty before Plan::AddTarget is called so we can assume DAG input to the Plan.
* Simplify BuildTest.StatFailureAbortsBuild test caseBrad King2017-06-191-2/+2
| | | | | Remove a dependency cycle from the test case, as cycles are covered by other tests. Ensure this case covers stat failure on a valid graph.
* Fix segfault on edge with no inputsColin Cross2017-06-161-0/+31
| | | | | | | | PR #1281 added a deference of most_recent_input without checking for NULL, which can occur if a build rule has no inputs. Check it for null before dereferencing, and add a test. Fixes #1290.
* Always rebuild on errorsColin Cross2017-05-221-2/+2
| | | | | | | | | | https://groups.google.com/forum/#!msg/ninja-build/YQuGNrECI-4/ti-lAs9SPv8J discusses a case where an rule updates its output file and then fails. The next run of ninja considers the ouptut file clean and doesn't rebuild it. Always stat output files after they are built, and write the mtime into .ninja_log. Consider output files dirty if the recorded mtime is older than the most recent input file.
* Add a test that fails if a rule updates it output file but failsColin Cross2017-05-221-2/+49
| | | | | | | | https://groups.google.com/forum/#!msg/ninja-build/YQuGNrECI-4/ti-lAs9SPv8J discusses a case where an rule updates its output file and then fails. The next run of ninja considers the ouptut file clean and doesn't rebuild it. Add a test for this case, which currently fails.
* Regression test for not initialized elapsed time bug.gkistanova2016-07-141-0/+8
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* Fix NINJA_STATUS %r on dumb terminalsColin Cross2016-04-291-2/+4
| | | | | | | | | | | | PR #999 made dumb terminals only output when edges finish. PrintStatus is called after finished_edges_ is incremented, which means the calculation for running edges will always return 1 less than the real number of running processes. This happens on smart terminals too, but ninja will immediately print the status for the next edge with starting_edges_ incremented, so the incorrect value is never visible. Pass a boolean specifying whether the status is being printed on an edge finishing, and if so count the edge that just finished as being running.
* Improve Plan::EdgeFinished signatureBrad King2016-04-191-26/+26
| | | | | | | Use an enumeration instead of a boolean to clarify the purpose of arguments at call sites. Suggested-by: Nico Weber <nicolasweber@gmx.de>
* Merge pull request #1126 from bradking/pool-release-on-failNico Weber2016-04-191-24/+90
|\ | | | | Release the pool slot held by an edge whether it succeeds or fails
| * Add another test case covering pool release on edge failureDavid Emett2016-04-061-0/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With this build file: pool failpool depth = 1 rule fail command = fail pool = failpool build out1: fail build out2: fail build out3: fail build final: phony out1 out2 out3 Running `ninja -k 0` should run out1..3 sequentially before failing, but until recently we would fail after just running out1. Add a test covering this case.
| * Release the pool slot held by an edge whether it succeeds or failsFredrik Medley2016-04-061-24/+66
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When an edge finishes building, it should be release from its pool. Make sure that this also is the case when an edge fails to build. The bug can be shown with a pool has size N, then `ninja -k N+1` will still stop after N failing commands for that pool, even if there are many more jobs to be done for that pool: pool mypool depth = 1 rule bad_rule command = false pool = mypool build a : bad_rule build b : bad_rule Current behaviour: $ ninja -k 0 [1/2] false FAILED: false ninja: build stopped: cannot make progress due to previous errors. Expected behaviour: $ ninja -k 0 [1/2] false FAILED: false [2/2] false FAILED: false ninja: build stopped: cannot make progress due to previous errors. Signed-off-by: Fredrik Medley <fredrik.medley@gmail.com>
* | Avoid double-scheduling build edges in another caseBrad King2016-02-031-0/+23
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The change in commit v1.2.0~3^2~3^2~3 (Fix duplicate edge Pool crash in the minimally invasive way, 2013-03-18) avoids double-scheduling in a case involving duplicate out edges. However, double-scheduling may also occur on a consistent graph when an edge and one of its dependencies share an order-only input: $ cat build.ninja ... build c: touch build b: touch || c build a: touch | b || c $ ninja a $ rm a c $ ninja a In this case 'c' will build first. When NodeFinished('c') loops over the out edges it will find AllInputsReady is true for 'b' and call EdgeFinished('b') since it is not wanted (up to date). This will call NodeFinished('b') which will loop over its out edges, find AllInputsReady is true for 'a', and call ScheduleEdge('a'). When we eventually return to the loop in NodeFinished('c') it will move on to its second output and find that AllInputsReady is true for 'a' and call ScheduleEdge('a') again. Teach ScheduleEdge to tolerate duplicate calls for an edge that has already been scheduled. Avoid calling EdgeScheduled more than once for the same edge.
* Add support for build statement implicit outputsBrad King2016-02-031-0/+16
| | | | | | | | | | | | | | | | | | Some build rules produce outputs that are not mentioned on the command line but that should be part of the build graph. Such outputs should not be named in the `$out` variable. Extend the build statement syntax to support specification of implicit outputs using the syntax `| out1 out2` after the explicit outputs and before the `:`. For example, compilation of a Fortran source file `foo.f90` that defines `MODULE FOO` may now be specified as: rule fc command = f95 -c $in -o $out build foo.o | foo.mod: fc foo.f90 The `foo.mod` file is an implicit output generated by the compiler based on the content of the source file and not mentioned on the command line.
* Make links point to org pageNico Weber2015-11-111-4/+4
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* Fix pool use count going unbalancedScott Graham2015-04-231-8/+36
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* Don't get stuck on cyclic graphs where one edge has multiple outputs.Nico Weber2015-04-011-0/+37
| | | | | | | | | | | | | | | | | | | Fixes #934. Plan::AddSubTarget() tracks in want_ if each edge has been visited and visits every edge only once. But Plan::CheckDependencyCycle() worked on nodes however, so if a cycle was entered through an edge with multiple outputs, ninja would fail to detect that cycle. Move cycle detection to look for duplicate edges instead of nodes to fix this. The extra jump makes CheckDependencyCycle() a bit slower: for a synthetic build file with 10000 serial build steps, `ninja -n` now takes 0.32s instead of 0.26s before on my laptop. In practice, projects have a dependency change length on the order of 50, so there shouldn't be a noticeable slowdown in practice. (If this does end up being a problem: CheckDependencyCycle() currently does O(n) work and is called O(m) times from AddSubTarget(), so I think cycle checking is O(n^2) in the build depth. So instead of worrying about constant overhead, we could use a set<> instead of a stack<>. But it doesn't seem to be a problem in practice.)
* Let Stat() have an err outparam instead of writing to stderr.Nico Weber2015-03-311-4/+5
| | | | | | | | | Also check for Stat() failure in a few more places. This way, ninja doesn't print two "ninja: error: " lines if stat() fails during a build. It also makes it easier to keep the stat tests quiet. Every caller of Stat() needs to explicitly log the error string if that's desired.
* Make failing stat() calls abort the build.Nico Weber2015-03-191-11/+25
| | | | | | | | | | | | | | | | | | | | | | | | Fixes #830, fixes #904. In practice, this either happens with 64-bit inodes and a 32-bit userspace when building without -D_FILE_OFFSET_BITS=64 in CFLAGS, or when a filename is longer than the system file length limit. Since DiskInterface::Stat() returns -1 on error, and Node used -1 on "stat state unknown", not aborting the build lead to ninja stat()ing the same file over and over again, until it finally ran out of stack. That's now fixed. * Change RecomputeOutputsDirty() to return success instead of dirty state (like RecomputeDirty()) and return the dirty state in a bool outparam * Node::Stat()s old return value wasn't used anywhere, change the function to return success instead and add an |err| outparam * Node::StatIfNecessary()'s old return value was used only in one place. Change that place to explicitly check status_known() and make StatIfNecessary() return success and add an |err| outparam * Plan::CleanNode() can now fail, make it return bool and add an |err| outparam
* On unexpected output in a .d file, rebuild instead erroring.Nico Weber2015-03-121-0/+17
| | | | Fixes #417.
* Reject depfiles that don't contain a : after the target name.Nico Weber2015-03-121-2/+1
| | | | This is a prerequisite for fixing #417.
* make all GetNode explicit, add DepsLog canonicalize testScott Graham2014-11-101-1/+67
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* improve testScott Graham2014-11-091-7/+10
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* remove CanonicalizePath overloads, test for toplevel behaviourScott Graham2014-11-091-0/+29
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* path decanonicalization when building commandScott Graham2014-11-081-2/+1
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* CanonicalizePath handles \ on WindowsScott Graham2014-10-301-5/+1
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* Use a small, standalone testing framework instead of googletest.Nico Weber2014-09-181-1/+3
| | | | | | | | | | | | | | | | | | | | | Ninja currently uses googletest for testing. That makes building ninja_test somewhat annoying since it requires that one passes --with-gtest PATH to configure. It turns out just implementing the bits of googletest that ninja uses needs about the same amount of code than making the --with-gtest flag in configure.py work and making googletest print test results in a way we want (!) In addition to making configuration simpler, this also makes compiling tests much faster: On my system, touching src/build_test.cc (the slowest file to build in ninja) and rebuilding ninja_tests is twice as fast than without this patch. Building all is noticeably faster too: 5.6s with this patch, 9.1s without this patch (38% faster). The most noticeable things missing: EXPECT_* and ASSERT_* don't support streaming notes to them with operator<<, and for failing tests the lhs and rhs are not printed. That's so that this header does not have to include sstream, which slows down building ninja_test almost 20%. If this turns out to be annoying, we can maybe add it.
* Make "depfile=$out.d" work if $out contains escaped characters, rspfile too.Nico Weber2014-05-211-17/+28
| | | | | | | | | | | | | | Fixes #730. This has always been broken, but due to #690 more paths are now escaped (e.g. paths containing + characters, like file.c++). Also see discussion in #689. The approach is to give EdgeEnv an enum deciding on whether or not to escape file names, and provide functions that evaluate depfile and rspfile with that set that to kNoEscape. (depfile=$out.d doesn't make sense on edges with multiple outputs.) This should be relatively safe, as $in and $out can't be used on edges, only on rules (#687).
* win console wip: enable testNico Weber2014-05-131-4/+2
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* Introduce the "console" poolPeter Collingbourne2014-02-031-10/+54
| | | | | | | This is a pre-defined pool with a depth of 1. It has the special property that any task in the pool has direct access to the console. This can be useful for interactive tasks or long-running tasks which produce status updates on the console (such as test suites).
* Make BuildLogUser reference constant.Nico Weber2014-01-071-1/+1
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* Rename "IsDead" to "BuildLogUser".Nico Weber2014-01-041-2/+2
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* Make tests compile (one fails atm).Nico Weber2014-01-021-2/+4
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* Simplify.Nico Weber2013-09-081-3/+2
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* Fix for build test for BuildWithDepsLogTest.RestatMissingDepfileDepslogRichard Geary2013-09-071-1/+4
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* Fix restat rebuild if deps are missing.Maxim Kalaev2013-09-021-1/+117
| | | | | | | | | | | | Fixes issue #603. Apparently, the problem was caused by my fix r "consider target dirty if depfile is missing" (bcc8ad1), which was not working correctly with restat rules cleaning nodes. Switching to deps only triggered an easily observable issue. Fix by setting a flag in edges with invalid deps, and not cleaning edges with that flag set.
* Minor style fixes, no behavior change.Nico Weber2013-08-231-2/+2
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* Add a test for issue #638.Nico Weber2013-08-221-0/+1
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* Add test for correct restat logicChris Hopman2013-07-201-0/+40
| | | | | When a single output of an edge is dirty, the restat check should leave all outputs of that edge dirty.
* Add a test for CreatePhonyInEdge() in depsmode path.Nico Weber2013-06-061-0/+61
| | | | | | Removing the `CreatePhonyInEdge(node);` line in `ImplicitDepLoader::LoadDepsFromLog()` made no tests fail before this change. The new test is a port to depsmode of the existing DepFileOK test.
* Add test that proves `node->AddOutEdge(edge);` in `LoadDepFile()` is needed.Nico Weber2013-06-041-1/+24
| | | | No functionality change. Related to issue #590.
* Fix restat builds with edges generating headers depended on through deps filesNico Weber2013-06-031-0/+64
| | | | | | | | | | | | | in deps mode. `ImplicitDepLoader::LoadDepFile()` already adds a depfile edge from every file mentioned in a depfile to the depfile's output. `ImplicitDepLoader::LoadDepsFromLog()` didn't do this yet, so add it. Else, if a restat rule clears a generated .h file, this wouldn't propagate to cc files depending on that .h file through a depfile. Fixues issue #590.
* Fix Pool tests.Robert Iannucci2013-05-061-18/+37
| | | | | | | At any phase in the test where multiple edges are ready simultaneously, acquire all edges and sort them into a predictable order. This allows the test to execute deterministically regardless of the order of edge allocation.
* Don't record deps in dry runs.Nico Weber2013-04-221-1/+30
| | | | | | | deps_log() is NULL during dry runs, so this fixes a crash. It also matches ninja 1.2.0's behavior as far as I can tell. Fixes issue #551.
* Merge pull request #541 from sgraham/fix-vs2012Evan Martin2013-04-131-2/+2
|\ | | | | try again on vs2012 build fixes
| * try again on vs2012 build fixesScott Graham2013-04-111-2/+2
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* | fix testEvan Martin2013-04-111-14/+14
|/ | | | | I intentionally changed the semantics of the code that affected this test, but didn't update the test. Oops.
* add a straightforward deps log test, fix the other oneEvan Martin2013-04-091-10/+81
| | | | | | The first test I wrote was wrong; write a simpler test that exercises the "no failures" code paths, then fix the second test and the bugs it exposed.
* Make deps=gcc without depfile an error.Nico Weber2013-04-091-0/+18
| | | | | | | | | | | | When I first played with depslog, I accidentally removed the depfile attribute on my cc edges, which had the effect of ninja silently ignoring all depfiles. Instead, let ninja complain about edges that have deps set to gcc and depfile set to nothing. This is done at edge build time, instead of at mainfest load time, because adding this check to ParseEdge() regressed empty build time for target 'chrome' by 30ms. The check is only useful for generator authors, regular users should never see this.
* add a test for the "deps out of date" caseEvan Martin2013-04-091-0/+96
| | | | It touched the various remaining XXXes in the code, hooray.