Failed to build Chromium after remove out/Debug, cors.mojom-shared.h' file not found

[xin...@intel.com]

I have two separate chromium folder(src1, src2), both can successfully build debug/release version before Yesterday. 

However,  in yesterday,  I synced both src1 and src2, and delete src2/out/Debug. Then src1/out/Debug/ src1/out/Release and  src2/out/Release built successfully, but src2/out/Debug fails.

The complains of src2/out/Debug:

In file included from ../../services/network/public/cpp/network_ipc_param_traits.h:28:

../../services/network/public/cpp/resource_request.h:18:10: fatal error: 'services/network/public/mojom/cors.mojom-shared.h' file not found

#include "services/network/public/mojom/cors.mojom-shared.h"

         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1 error generated.

[4434/24270] CXX obj/components/content_settings/core/browser/browser/content_settings_utils.o

ninja: build stopped: subcommand failed.

cors.mojom-shared.h exists in src2/out/Release and src1/out/Release src1/out/Debug:

src2$ find ./ -name cors.mojom-shared.h

./out/Release/gen/services/network/public/mojom/cors.mojom-shared.h

src1$ find ./ -name cors.mojom-shared.h

./out/Debug/gen/services/network/public/mojom/cors.mojom-shared.h

./out/Release/gen/services/network/public/mojom/cors.mojom-shared.

And my build args for debug:

cat out/Debug/args.gn 

# Build arguments go here.

# See "gn args <out_dir> --list" for available build arguments.

is_debug = true

is_component_build = true

enable_nacl = false

remove_webcore_debug_symbols = true

symbol_level = 2

[Asesh Shrestha]

Did you try: gn gen out\Debug and try again?

[xin...@intel.com]

Thanks.  After sync code today, problem resolved.

[bruce...@chromium.org]

This is, unfortunately, a known bug.

The generic fix is gn clean followed by a fresh build (and crossing your fingers), explicitly building the missing file (ninja -C out/Debug gen/services/network/public/mojom/cors.mojom-shared.h), or perhaps building with -k 0 so that the step that generates the file will eventually be created, and the next build will succeed.

This is tracked by crbug.com/655123.

[Nico Weber]

On Thu, Jun 7, 2018 at 4:53 PM, <bruce...@chromium.org> wrote:

This is, unfortunately, a known bug.

The generic fix is gn clean followed by a fresh build (and crossing your fingers), explicitly building the missing file (ninja -C out/Debug gen/services/network/public/mojom/cors.mojom-shared.h), or perhaps building with -k 0 so that the step that generates the file will eventually be created, and the next build will succeed.

This is tracked by crbug.com/655123.

That bug is "we don't have an automated way to find missing deps".

The issue at hand is "a specific dep is missing".

I think those are separate bugs. If the cors.mojom-shared.h issue still happens, it deserves its own bug that someone needs to fix. (Like https://crbug.com/816984 https://crbug.com/522336 etc)

 

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[Colin Blundell]

On Fri, Jun 8, 2018 at 12:16 AM Nico Weber <tha...@chromium.org> wrote:

On Thu, Jun 7, 2018 at 4:53 PM, <bruce...@chromium.org> wrote:

This is, unfortunately, a known bug.

The generic fix is gn clean followed by a fresh build (and crossing your fingers), explicitly building the missing file (ninja -C out/Debug gen/services/network/public/mojom/cors.mojom-shared.h), or perhaps building with -k 0 so that the step that generates the file will eventually be created, and the next build will succeed.

This is tracked by crbug.com/655123.

That bug is "we don't have an automated way to find missing deps".

The issue at hand is "a specific dep is missing".

I think those are separate bugs. If the cors.mojom-shared.h issue still happens, it deserves its own bug that someone needs to fix. (Like https://crbug.com/816984 https://crbug.com/522336 etc)

Related to this: Xing, what was your build command, and what was the file on which compilation failed? With both of those, it should be fairly easy to track down the missing dep.

 

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[Xu, Xing]

Build  command: ninja –C out/Debug chrome

 

Anyway, it works now.

 

Regards,

Xing

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[Colin Blundell]

On Fri, Jun 8, 2018 at 10:11 AM Xu, Xing <xin...@intel.com> wrote:

Build  command: ninja –C out/Debug chrome

 

Anyway, it works now.

 

These kinds of problems are basically flaky by definition, so it working now doesn't mean that the problem is fixed :). Do you recall which file failed to compile? Without that info, searching for the missing dep is a needle-in-a-haystack problem.

Thanks,

Colin

[Xu, Xing]

The failed file was listed in my original post, it is ../../services/network/public/cpp/resource_request.h:

The complains of src2/out/Debug:

In file included from ../../services/network/public/cpp/network_ipc_param_traits.h:28:

../../services/network/public/cpp/resource_request.h:18:10: fatal error: 'services/network/public/mojom/cors.mojom-shared.h' file not found

#include "services/network/public/mojom/cors.mojom-shared.h"

 

 

Regards,

[Colin Blundell]

On Fri, Jun 8, 2018 at 10:15 AM Xu, Xing <xin...@intel.com> wrote:

The failed file was listed in my original post, it is ../../services/network/public/cpp/resource_request.h:

The complains of src2/out/Debug:

In file included from ../../services/network/public/cpp/network_ipc_param_traits.h:28:

../../services/network/public/cpp/resource_request.h:18:10: fatal error: 'services/network/public/mojom/cors.mojom-shared.h' file not found

#include "services/network/public/mojom/cors.mojom-shared.h"

Those files were presumably included from a .cc file that the compiler was trying to build, no? That's the file I'm asking about.

[Xu, Xing]

Aha, it’s lucky that Ubuntu bash shell keeps such a long historyJ

gen/services/network/public/mojom/websocket.mojom.cc:32:

 

 

 

Src2$ ninja -C out/Debug chrome

ninja: Entering directory `out/Debug'

[20/19837] CXX obj/services/network/public/mojom/websocket_mojom/websocket.mojom.o

FAILED: obj/services/network/public/mojom/websocket_mojom/websocket.mojom.o

../../third_party/llvm-build/Release+Asserts/bin/clang++ -MMD -MF obj/services/network/public/mojom/websocket_mojom/websocket.mojom.o.d -DBLINK_PLATFORM_IMPLEMENTATION=1 -DV8_DEPRECATION_WARNINGS -DUSE_UDEV -DUSE_AURA=1 -DUSE_GLIB=1 -DUSE_NSS_CERTS=1 -DUSE_X11=1 -DFULL_SAFE_BROWSING -DSAFE_BROWSING_CSD -DSAFE_BROWSING_DB_LOCAL -DCHROMIUM_BUILD -DFIELDTRIAL_TESTING_ENABLED -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -DCR_CLANG_REVISION=\"332838-1\" -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -DCOMPONENT_BUILD -DCR_LIBCXX_REVISION=332543 -DCR_LIBCXXABI_REVISION=331450 -DCR_SYSROOT_HASH=4e7db513b0faeea8fb410f70c9909e8736f5c0ab -D_DEBUG -DDYNAMIC_ANNOTATIONS_ENABLED=1 -DWTF_USE_DYNAMIC_ANNOTATIONS=1 -D_GLIBCXX_DEBUG=1 -DGLIB_VERSION_MAX_ALLOWED=GLIB_VERSION_2_32 -DGLIB_VERSION_MIN_REQUIRED=GLIB_VERSION_2_26 -DGOOGLE_PROTOBUF_NO_RTTI -DGOOGLE_PROTOBUF_NO_STATIC_INITIALIZER -DHAVE_PTHREAD -DPROTOBUF_USE_DLLS -DBORINGSSL_SHARED_LIBRARY -I../.. -Igen -I../../third_party/protobuf/src -Igen/protoc_out -I../../third_party/protobuf/src -I../../third_party/boringssl/src/include -fno-strict-aliasing --param=ssp-buffer-size=4 -fstack-protector -Wno-builtin-macro-redefined -D__DATE__= -D__TIME__= -D__TIMESTAMP__= -funwind-tables -fPIC -pipe -B../../third_party/binutils/Linux_x64/Release/bin -pthread -fcolor-diagnostics -fmerge-all-constants -Xclang -mllvm -Xclang -instcombine-lower-dbg-declare=0 -no-canonical-prefixes -m64 -march=x86-64 -Wall -Werror -Wextra -Wimplicit-fallthrough -Wthread-safety -Wno-missing-field-initializers -Wno-unused-parameter -Wno-c++11-narrowing -Wno-covered-switch-default -Wno-unneeded-internal-declaration -Wno-undefined-var-template -Wno-nonportable-include-path -Wno-address-of-packed-member -Wno-unused-lambda-capture -Wno-user-defined-warnings -Wno-enum-compare-switch -Wno-null-pointer-arithmetic -Wno-ignored-pragma-optimize -O0 -fno-omit-frame-pointer -g2 -gsplit-dwarf -ggnu-pubnames -fvisibility=hidden -Xclang -load -Xclang ../../third_party/llvm-build/Release+Asserts/lib/libFindBadConstructs.so -Xclang -add-plugin -Xclang find-bad-constructs -Xclang -plugin-arg-find-bad-constructs -Xclang enforce-in-thirdparty-webkit -Xclang -plugin-arg-find-bad-constructs -Xclang check-enum-max-value -Xclang -plugin-arg-find-bad-constructs -Xclang check-ipc -Wheader-hygiene -Wstring-conversion -Wtautological-overlap-compare -isystem../../build/linux/debian_sid_amd64-sysroot/usr/include/glib-2.0 -isystem../../build/linux/debian_sid_amd64-sysroot/usr/lib/x86_64-linux-gnu/glib-2.0/include -Wno-header-guard -isystem../../build/linux/debian_sid_amd64-sysroot/usr/include/nss -isystem../../build/linux/debian_sid_amd64-sysroot/usr/include/nspr -Wno-undefined-bool-conversion -Wno-tautological-undefined-compare -std=gnu++14 -fno-exceptions -fno-rtti -nostdinc++ -isystem../../buildtools/third_party/libc++/trunk/include -isystem../../buildtools/third_party/libc++abi/trunk/include --sysroot=../../build/linux/debian_sid_amd64-sysroot -fvisibility-inlines-hidden -c gen/services/network/public/mojom/websocket.mojom.cc -o obj/services/network/public/mojom/websocket_mojom/websocket.mojom.o

In file included from gen/services/network/public/mojom/websocket.mojom.cc:32:

In file included from ../../services/network/public/cpp/network_ipc_param_traits.h:28:

../../services/network/public/cpp/resource_request.h:19:10: fatal error: 'services/network/public/mojom/fetch_api.mojom-shared.h' file not found

#include "services/network/public/mojom/fetch_api.mojom-shared.h"

        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1 error generated.

[29/19837] CXX obj/services/preferences/public/cpp/cpp/persistent_pref_store_client.o

ninja: build stopped: subcommand failed.

 

 

 

 

Regards,

[Colin Blundell]

Thank you! I filed a bug with the results of my investigation and put the relevant folks on it. The problem is evident but the solution is not totally straightforward as described on the bug.

[Colin Blundell]

To close the loop: this is now fixed, thanks to yhirano@.