ci: Build with --enable-werror by default, and document exceptions #20182

hebasto · 2020-10-19T00:51:43Z

This PR prevents introducing of new compiler warnings in the master branch, e.g., #19986, #20162.

fanquake

Please fill out the PR description. What's the motivation for this change.

ci/test/00_setup_env_i686_centos.sh

DrahtBot · 2020-10-19T07:07:57Z

The following sections might be updated with supplementary metadata relevant to reviewers and maintainers.

Conflicts

Reviewers, this pull request conflicts with the following ones:

build: Do not repeat warning names in -Werror=... options #20544 (build: Do not repeat warning names in -Werror=... options by hebasto)
Qt: Add Android packaging support #17227 (Qt: Add Android packaging support by icota)

If you consider this pull request important, please also help to review the conflicting pull requests. Ideally, start with the one that should be merged first.

configure.ac

practicalswift · 2020-10-20T07:37:09Z

Concept ACK: deduplication is good

vasild

Approach ACK

ci/test/06_script_a.sh

configure.ac

maflcko · 2020-10-21T09:07:15Z

The build system changes should go separate from the test/ci changes. Are they required or orthogonal?

vasild · 2020-10-21T09:14:05Z

[@hebasto, correct me if I am wrong]

@MarcoFalke, if they are going to go as separate PRs, then I think the CI change must go first and after that the configure.ac change. Otherwise we will get CI trying to compile with full -Werror and without --enable-suppress-external-warnings which will likely cause build failures.

hebasto · 2020-10-21T09:16:07Z

The build system changes should go separate from the test/ci changes. Are they required or orthogonal?

CI changes require build system changes.

vasild

ACK 81ade9b

vasild · 2020-10-21T10:02:36Z

configure.ac

+  dnl This is a temporary workaround. See https://github.com/bitcoin/bitcoin/pull/17919#issuecomment-674404780
+  AX_CHECK_COMPILE_FLAG([-Wunused-command-line-argument],[NOWARN_CXXFLAGS="$NOWARN_CXXFLAGS -Wno-unused-command-line-argument"],,[[$CXXFLAG_WERROR]])


When can this workaround be removed? It is not clear from the linked comment.

I think whenever -Wno-foo is added (silencing a class of warnings in Bitcoin Core code) that should link a PR that fixes those warnings or at least some concrete plan to ensure that the added -Wno-foo will not be forgotten and remain forever in configure.ac.

Right, but we have no a PR with a fix now ((

vasild · 2020-11-05T15:44:13Z

ACK 3a409f6

hebasto · 2020-11-26T20:16:05Z

@fanquake @practicalswift @vasild @MarcoFalke

Mind (re)reviewing this PR (at the early stage of 22.0 cycle)?

practicalswift · 2020-11-26T21:29:41Z

cr ACK 2ca5156: patch looks correct!

hebasto · 2020-12-02T08:52:45Z

The build system changes should go separate from the test/ci changes.

Build system changes. i.e. the first commit, has been split out into a separated pr #20544.

vasild · 2020-12-03T06:36:29Z

To resolve the dependency tangle with #20544 I think that:

This PR should drop its first commit (the configure.ac changes, contained in build: Do not repeat warning names in -Werror=... options #20544). However the changes to ci/test/06_script_a.sh which are now part of that first commit should be moved to the second commit (ci changes).
This PR merged (it will not cause any ci breakage).
build: Do not repeat warning names in -Werror=... options #20544 should remove the changes to ci/test/06_script_a.sh which are contained in this PR and already merged.
build: Do not repeat warning names in -Werror=... options #20544 merged (it will not cause any breakage because ci is now prepared by the already merged PR).

hebasto · 2020-12-03T09:00:56Z

To resolve the dependency tangle with #20544 I think that:

This PR should drop its first commit (the configure.ac changes, contained in build: Do not repeat warning names in -Werror=... options #20544). However the changes to ci/test/06_script_a.sh which are now part of that first commit should be moved to the second commit (ci changes).

This PR merged (it will not cause any ci breakage).

build: Do not repeat warning names in -Werror=... options #20544 should remove the changes to ci/test/06_script_a.sh which are contained in this PR and already merged.

build: Do not repeat warning names in -Werror=... options #20544 merged (it will not cause any breakage because ci is now prepared by the already merged PR).

Something similar was in my mind, so done.

hebasto · 2020-12-03T09:05:24Z

@MarcoFalke the assigned label could be switched from "Build system" to "Tests" now, right?

maflcko

Not sure if this makes sense by itself in the current form. I failed to reproduce the compile failures locally.

ci/test/00_setup_env_s390x.sh

ci/test/00_setup_env_native_nowallet.sh

hebasto · 2020-12-03T14:19:38Z

Updated cbb234c -> 0e2d9ef (pr20182.10 -> pr20182.11):

removed unrelated changes
rebased on top of the recent CI changes

vasild

ACK 0e2d9ef

I am fine with NO_WERROR=1 in some of the .sh files as long as those files did not contain --enable-werror in their BITCOIN_CONFIG before this PR. I.e. they did not use werror before this PR and will not use it after this PR either.

Surely, the less NO_WERROR=1 the better :)

maflcko · 2020-12-03T16:50:55Z

ci/test/00_setup_env_win64.sh

@@ -14,3 +14,4 @@ export RUN_FUNCTIONAL_TESTS=false
 export RUN_SECURITY_TESTS="true"
 export GOAL="deploy"
 export BITCOIN_CONFIG="--enable-reduce-exports --disable-gui-tests --without-boost-process"
+export NO_WERROR=1


I haven't tried this one yet. What is the error here?

https://cirrus-ci.com/task/6268532532969472

script/interpreter.cpp: In function ‘bool EvalChecksig(const valtype&, const valtype&, prevector<28, unsigned char>::const_iterator, prevector<28, unsigned char>::const_iterator, ScriptExecutionData&, unsigned int, const BaseSignatureChecker&, SigVersion, ScriptError*, bool&)’: script/interpreter.cpp:429:1: error: control reaches end of non-void function [-Werror=return-type] } ^ cc1plus: some warnings being treated as errors

https://sourceforge.net/p/mingw-w64/bugs/306/

Thanks. Can confirm locally:

Could mention with a comment?

maflcko · 2020-12-03T17:34:41Z

ACK 0e2d9ef 👈

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hebasto · 2020-12-03T18:56:05Z

Updated 0e2d9ef -> 2f6fe4e (pr20182.11 -> pr20182.12, diff):

addressed @MarcoFalke's comment:

Could mention with a comment?

practicalswift · 2020-12-03T21:21:29Z

cr ACK 2f6fe4e: patch looks correct

vasild

ACK 2f6fe4e

maflcko · 2020-12-04T06:23:39Z

re-ACK 2f6fe4e 🏏

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…ocument…

Github-Pull: bitcoin#20182 Rebased-From: 2f6fe4e

55e941f test: Fix intermittent feature_taproot issue (MarcoFalke) 681f728 ci: Build with --enable-werror by default, and document exceptions (Hennadii Stepanov) 89426c4 ci: Fix macOS brew install command (Hennadii Stepanov) Pull request description: This backports a few changes to fix CI failures we are seeing with the 0.21 branch. Backports #21663, this might be the easiest way to fix the macOS CI failures we're seeing. i.e in #22569. The underlying issue is that the older CI images are using a version of brew that without running `brew update` first, is trying to download packages like Boost, from bintray (which no-longer works). This also includes #20182, as by fixing macOS failure, via running `brew upgrade`, we end up using a newer version of miniupnpc, which emits a GNU extension related warning, and causes the build to fail, because we use `-Werror`. Backporting #20535 should fix #22581. ACKs for top commit: hebasto: ACK 55e941f, I verified changes by backporting locally. Tree-SHA512: 3ab2c5c73c707d0f5b862264f3a0179cdeee30ae55aae872f3c3e0bb81d71a5027c39ba830210c99a21f98cc86c4167c4f215e24d1a8891ec79ce512debf82df

Needed to remain compatible with backport commit 681f728 Github-Pull: bitcoin#20182 Rebased-From: 2f6fe4e

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Bump minimum python version to 3.6 #19504

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wallet: upgradewallet fixes and additional tests #18836

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Qt: Add Android packaging support #17227

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ci: Run more ci configs on cirrus #20339

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ci: Run ci configs on cirrus #19179

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hebasto changed the title ~~ci: Enable -Werror for Travis builds, and document exceptions~~ ci: Enable -Werror, and document exceptions Nov 26, 2020

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DrahtBot mentioned this pull request Nov 27, 2020

Add syscall sandboxing using seccomp-bpf (Linux secure computing mode) #20487

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hebasto changed the title ~~ci: Enable -Werror, and document exceptions~~ ci: Build with --enable-werror by default, and document exceptions Dec 3, 2020

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ci: Build with --enable-werror by default, and document exceptions

2f6fe4e

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sidhujag pushed a commit to syscoin/syscoin that referenced this pull request Dec 4, 2020

Merge bitcoin#20182: ci: Build with --enable-werror by default, and d…

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…ocument…

fanquake mentioned this pull request Mar 23, 2021

build: miniupnpc 2.2.2 #20421

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fanquake pushed a commit to fanquake/bitcoin that referenced this pull request Jul 29, 2021

ci: Build with --enable-werror by default, and document exceptions

681f728

Github-Pull: bitcoin#20182 Rebased-From: 2f6fe4e

fanquake mentioned this pull request Jul 29, 2021

[0.21] Additional backports #22578

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ci: Exempt Win32 from default --enable-werror

12bbfb6

Needed to remain compatible with backport commit 681f728 Github-Pull: bitcoin#20182 Rebased-From: 2f6fe4e

bitcoin locked as resolved and limited conversation to collaborators Feb 15, 2022

		dnl This is a temporary workaround. See https://github.com/bitcoin/bitcoin/pull/17919#issuecomment-674404780
		AX_CHECK_COMPILE_FLAG([-Wunused-command-line-argument],[NOWARN_CXXFLAGS="$NOWARN_CXXFLAGS -Wno-unused-command-line-argument"],,[[$CXXFLAG_WERROR]])

ci: Build with --enable-werror by default, and document exceptions #20182

ci: Build with --enable-werror by default, and document exceptions #20182

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