unable to build chromium package: rustc-web

[ealfonsoy]

I'm trying to build chromium from source in order to debug something. But I'm not able to do so:

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[phantom][src][0]$ sudo apt-get build-dep chromium
Reading package lists... Done
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 builddeps:chromium : Depends: rustc-web but it is not installable
E: Unable to correct problems, you have held broken packages.
█[phantom][src][100]$ 

Searching for held packages returns empty:

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█[phantom][chromium-124.0.6367.118][0]$ dpkg --get-selections |grep hold

I have tried upgrading all packages but nothing changes.

I see that rustc-web appears to have been removed: https://tracker.debian.org/pkg/rustc-web#

I also don't see rustc-web in the dependencies of bookworm chromium: https://packages.debian.org/bookworm/chromium

Why does build-dep insist that rustc-web is a dependency? How can I build chromium?

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█[phantom][~][0]$ lsb_release -a
No LSB modules are available.
Distributor ID: Debian
Description:    Debian GNU/Linux 12 (bookworm)
Release:        12
Codename:       bookworm
█[phantom][~][0]$

[ruwolf]

It is in source dependence.

[ealfonsoy]

I see. How can I build chromium from source?

[ruwolf]

I do not know.
I would try to install rustc and try to install chromium source with ignoring errors or with forcing...

[None1975]

Hello.

You need a package

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librust-web-sys-dev

[stevepusser]

Just be aware that Chromium takes a lot of system resources to build (space, time, and RAM).

[ealfonsoy]

It fails after installing

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librust-web-sys-dev

. As a debian user, I assumed I would be able to build it any debian package from source simply using

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apt-get source

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apt-get build-dep

and

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dpkg-buildpackage -us -uc

.

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█[phantom][chromium-125.0.6422.60][100]$ sudo apt-get install -y librust-web-sys-dev
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
librust-web-sys-dev is already the newest version (0.3.60-3).
The following package was automatically installed and is no longer required:
  linux-image-6.1.0-15-amd64
Use 'sudo apt autoremove' to remove it.
0 upgraded, 0 newly installed, 0 to remove and 58 not upgraded.
█[phantom][chromium-125.0.6422.60][0]$ apt-get-source chromium
+ sudo apt-get build-dep -y chromium
Reading package lists... Done
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 builddeps:chromium : Depends: rustc-web but it is not installable
E: Unable to correct problems, you have held broken packages.
+ true
+ dpkg-buildpackage -us -uc
dpkg-buildpackage: info: source package chromium
dpkg-buildpackage: info: source version 125.0.6422.60-1~deb12u1
dpkg-buildpackage: info: source distribution bookworm-security
dpkg-buildpackage: info: source changed by Andres Salomon <dilinger@debian.org>
dpkg-buildpackage: info: host architecture amd64
 dpkg-source --before-build .
dpkg-checkbuilddeps: error: Unmet build dependencies: devscripts lld-16 clang-16 clang-format-16 libclang-rt-16-dev rustc-web elfutils flex yasm xvfb wdiff gperf bison rollup x11-apps xcb-proto libdav1d-dev libx11-xcb-dev libxshmfence-dev libglu1-mesa-dev libgles2-mesa-dev libopenh264-dev generate-ninja mesa-common-dev rapidjson-dev libva-dev libelf-dev libpci-dev libhwy-dev libkrb5-dev libflac-dev libpipewire-0.3-dev libopus-dev libxslt1-dev libdouble-conversion-dev libxnvctrl-dev libwoff-dev libsnappy-dev libjsoncpp-dev libsecret-1-dev libspeechd-dev libminizip-dev libhunspell-dev libxcb-dri3-dev libopenjp2-7-dev libmodpbase64-dev libnss3-dev libnspr4-dev libcups2-dev libevdev-dev libcurl4-openssl-dev fonts-ipafont-gothic fonts-ipafont-mincho
dpkg-buildpackage: warning: build dependencies/conflicts unsatisfied; aborting
dpkg-buildpackage: warning: (Use -d flag to override.)
++ history -a

[RedGreen925]

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█[phantom][chromium-125.0.6422.60][100]$ sudo apt-get install -y librust-web-sys-dev
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
librust-web-sys-dev is already the newest version (0.3.60-3).
The following package was automatically installed and is no longer required:
  linux-image-6.1.0-15-amd64
Use 'sudo apt autoremove' to remove it.
0 upgraded, 0 newly installed, 0 to remove and 58 not upgraded.
█[phantom][chromium-125.0.6422.60][0]$ apt-get-source chromium
+ sudo apt-get build-dep -y chromium
Reading package lists... Done
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 builddeps:chromium : Depends: rustc-web but it is not installable
E: Unable to correct problems, you have held broken packages.
dpkg-checkbuilddeps: error: Unmet build dependencies: devscripts lld-16 clang-16 clang-format-16 libclang-rt-16-dev rustc-web elfutils flex yasm xvfb wdiff gperf bison rollup x11-apps xcb-proto libdav1d-dev libx11-xcb-dev libxshmfence-dev libglu1-mesa-dev libgles2-mesa-dev libopenh264-dev generate-ninja mesa-common-dev rapidjson-dev libva-dev libelf-dev libpci-dev libhwy-dev libkrb5-dev libflac-dev libpipewire-0.3-dev libopus-dev libxslt1-dev libdouble-conversion-dev libxnvctrl-dev libwoff-dev libsnappy-dev libjsoncpp-dev libsecret-1-dev libspeechd-dev libminizip-dev libhunspell-dev libxcb-dri3-dev libopenjp2-7-dev libmodpbase64-dev libnss3-dev libnspr4-dev libcups2-dev libevdev-dev libcurl4-openssl-dev fonts-ipafont-gothic fonts-ipafont-mincho
dpkg-buildpackage: warning: build dependencies/conflicts unsatisfied; aborting
dpkg-buildpackage: warning: (Use -d flag to override.)
++ history -a

At the very least you need to install.

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apt install devscripts lld-16 clang-16 clang-format-16 libclang-rt-16-dev elfutils flex yasm xvfb wdiff gperf bison rollup x11-apps xcb-proto libdav1d-dev libx11-xcb-dev libxshmfence-dev libglu1-mesa-dev libgles2-mesa-dev libopenh264-dev generate-ninja mesa-common-dev rapidjson-dev libva-dev libelf-dev libpci-dev libhwy-dev libkrb5-dev libflac-dev libpipewire-0.3-dev libopus-dev libxslt1-dev libdouble-conversion-dev libxnvctrl-dev libwoff-dev libsnappy-dev libjsoncpp-dev libsecret-1-dev libspeechd-dev libminizip-dev libhunspell-dev libxcb-dri3-dev libopenjp2-7-dev libmodpbase64-dev libnss3-dev libnspr4-dev libcups2-dev libevdev-dev libcurl4-openssl-dev fonts-ipafont-gothic fonts-ipafont-mincho build-essential

All the missing development packages but the rustc-web it lists in the error plus I added the build-essential which as the name implies is a meta package to install the essential packages for building software on a Debian based system. If it still insists on a package not in the archive then you need to file a FTBS ( fails to build from source) bug as these things are supposed to possible to build from source. You can possibly edit the Control file I think it is where the rustc-web is listed as a dependency and remove it to see if the librust-web-sys-dev will be enough to allow the build to complete without the rustc-web. And the apt-file program is a handy thing to have as well after an apt-file update as root any user can apt-file search directory/file_missing.h to find the package(s) containing the missing file needed to install, always a -dev package needed.

[ealfonsoy]

Thanks for the tip. I installed all those dependencies, removed the `rustc-web` line from `debian/control`, and tried to build again via `dpkg-buildpackage -us -uc`, some progress appears to have been made but the build still failed:

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█[phantom][chromium-125.0.6422.60][0]$ dpkg-buildpackage -us -uc 
+ dpkg-buildpackage -us -uc
dpkg-buildpackage: info: source package chromium
dpkg-buildpackage: info: source version 125.0.6422.60-1~deb12u1
dpkg-buildpackage: info: source distribution bookworm-security
dpkg-buildpackage: info: source changed by Andres Salomon <dilinger@debian.org>
dpkg-buildpackage: info: host architecture amd64
 dpkg-source --before-build .
 debian/rules clean
dh clean
   debian/rules override_dh_auto_clean
make[1]: Entering directory '/home/ealfonso/src/chromium/chromium-125.0.6422.60'
rm -rf third_party/node/linux/node-linux-x64
rm -rf out
rm -rf third_party/node/node_modules/rollup
# bullseye workarounds; delete this post-bullseye
rm -rf third_party/node/node_modules/acorn
rm -rf third_party/node/node_modules/walk
find . -name \*.pyc -execdir rm -f {} \;
dh_auto_clean
make[1]: Leaving directory '/home/ealfonso/src/chromium/chromium-125.0.6422.60'
   dh_clean
        rm -f debian/debhelper-build-stamp
        rm -rf debian/.debhelper/
        rm -f -- debian/chromium.substvars debian/chromium-l10n.substvars debian/chromium-shell.substvars debian/chromium-driver.substvars debian/chromium-common.substvars debian/chromium-sandbox.substvars debian/files
        rm -fr -- debian/chromium/ debian/tmp/ debian/chromium-l10n/ debian/chromium-shell/ debian/chromium-driver/ debian/chromium-common/ debian/chromium-sandbox/
        find .  \( \( \
                \( -path .\*/.git -o -path .\*/.svn -o -path .\*/.bzr -o -path .\*/.hg -o -path .\*/CVS -o -path .\*/.pc -o -path .\*/_darcs \) -prune -o -type f -a \
                \( -name '#*#' -o -name '.*~' -o -name '*~' -o -name DEADJOE \
                 -o -name '*.orig' -o -name '*.rej' -o -name '*.bak' \
                 -o -name '.*.orig' -o -name .*.rej -o -name '.SUMS' \
                 -o -name TAGS -o \( -path '*/.deps/*' -a -name '*.P' \) \
                \) -exec rm -f {} + \) -o \
                \( -type d -a -name autom4te.cache -prune -exec rm -rf {} + \) \)
 dpkg-source -b .
dpkg-source: info: using source format '3.0 (quilt)'
dpkg-source: info: building chromium using existing ./chromium_125.0.6422.60.orig.tar.xz
dpkg-source: info: using patch list from debian/patches/series
dpkg-source: info: building chromium in chromium_125.0.6422.60-1~deb12u1.debian.tar.xz
dpkg-source: info: building chromium in chromium_125.0.6422.60-1~deb12u1.dsc
 debian/rules binary
dh binary
   dh_update_autotools_config
   dh_autoreconf
   debian/rules override_dh_auto_configure
make[1]: Entering directory '/home/ealfonso/src/chromium/chromium-125.0.6422.60'
uname -m
x86_64
if [ `uname -m` = "armv7l" ]; then \
        grep -q 'neon\|asimd' /proc/cpuinfo || { \
                echo "No NEON extension detected on armhf, refusing to build" 1>&2; \
                false; \
        }; \
fi
# verify that we're not accidentally uploading to stable-security without CVEs
# use system node w/out patching source; upstream hardcodes x64 in path
mkdir -p third_party/node/linux/node-linux-x64/bin
cp /usr/bin/node third_party/node/linux/node-linux-x64/bin
# use system rollup
cp -ra /usr/share/nodejs/rollup third_party/node/node_modules/
# output compiler information
clang++-16 --version
Debian clang version 16.0.6 (15~deb12u1)
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
# prefer unbundled (system) libraries
./debian/scripts/unbundle
make[1]: Leaving directory '/home/ealfonso/src/chromium/chromium-125.0.6422.60'
   debian/rules override_dh_auto_build-arch
make[1]: Entering directory '/home/ealfonso/src/chromium/chromium-125.0.6422.60'
gn gen out/Release --args="clang_use_chrome_plugins=false rust_sysroot_absolute=\"/usr\" rustc_version=\"rustc 1.63.0\" clang_base_path=\"/usr/lib/llvm-"16"\" clang_version=\""16"\" host_toolchain=\"//build/toolchain/linux/unbundle:default\" custom_toolchain=\"//build/toolchain/linux/unbundle:default\" host_cpu=\"x64\" use_vaapi=true is_debug=false use_goma=false use_sysroot=false use_libjpeg_turbo=true use_custom_libcxx=false use_unofficial_version_number=false enable_vr=false enable_nacl=false enable_swiftshader=false dawn_use_swiftshader=false build_dawn_tests=false enable_reading_list=false enable_iterator_debugging=false enable_hangout_services_extension=false angle_has_histograms=false angle_build_tests=false build_angle_perftests=false treat_warnings_as_errors=false use_qt=false is_cfi=false use_thin_lto=false chrome_pgo_phase=0  use_gio=true is_official_build=true symbol_level=0 use_pulseaudio=true link_pulseaudio=true rtc_use_pipewire=true icu_use_data_file=true enable_widevine=true v8_enable_backtrace=true use_system_zlib=true use_system_lcms2=true use_system_libjpeg=true use_system_libpng=true use_system_freetype=true use_system_harfbuzz=true use_system_libopenjpeg2=true concurrent_links=1 proprietary_codecs=true ffmpeg_branding=\"Chrome\" disable_fieldtrial_testing_config=true "
Done. Made 20182 targets from 3449 files in 6309ms
ninja -j20 -C out/Release chrome chrome_sandbox content_shell chromedriver
ninja: Entering directory `out/Release'
[227/61853] COPY obj/build/rust/std/libprofiler_builtins.rlib preb...lib/rustlib/x86_64-unknown-linux-gnu/lib/libprofiler_builtins.rlib
FAILED: prebuilt_rustc_sysroot/lib/rustlib/x86_64-unknown-linux-gnu/lib/libprofiler_builtins.rlib 
ln -f obj/build/rust/std/libprofiler_builtins.rlib prebuilt_rustc_sysroot/lib/rustlib/x86_64-unknown-linux-gnu/lib/libprofiler_builtins.rlib 2>/dev/null || (rm -rf prebuilt_rustc_sysroot/lib/rustlib/x86_64-unknown-linux-gnu/lib/libprofiler_builtins.rlib && cp -af obj/build/rust/std/libprofiler_builtins.rlib prebuilt_rustc_sysroot/lib/rustlib/x86_64-unknown-linux-gnu/lib/libprofiler_builtins.rlib)
cp: cannot stat 'obj/build/rust/std/libprofiler_builtins.rlib': No such file or directory
[246/61853] CXX obj/base/allocator/partition_allocator/src/partition_alloc/allocator_core/pcscan_internal.o
ninja: build stopped: subcommand failed.
make[1]: *** [debian/rules:158: override_dh_auto_build-arch] Error 1
make[1]: Leaving directory '/home/ealfonso/src/chromium/chromium-125.0.6422.60'
make: *** [debian/rules:125: binary] Error 2
dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2
++ history -a
█[phantom][chromium-125.0.6422.60][2]$ 

In particular, some "prebuilt" rustc-related dependency failed, a file named "libprofiler_builtins.rlib":

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FAILED: prebuilt_rustc_sysroot/lib/rustlib/x86_64-unknown-linux-gnu/lib/libprofiler_builtins.rlib 
ln -f obj/build/rust/std/libprofiler_builtins.rlib prebuilt_rustc_sysroot/lib/rustlib/x86_64-unknown-linux-gnu/lib/libprofiler_builtins.rlib 2>/dev/null || (rm -rf prebuilt_rustc_sysroot/lib/rustlib/x86_64-unknown-linux-gnu/lib/libprofiler_builtins.rlib && cp -af obj/build/rust/std/libprofiler_builtins.rlib prebuilt_rustc_sysroot/lib/rustlib/x86_64-unknown-linux-gnu/lib/libprofiler_builtins.rlib)
cp: cannot stat 'obj/build/rust/std/libprofiler_builtins.rlib': No such file or directory
[246/61853] CXX obj/base/allocator/partition_allocator/src/partition_alloc/allocator_core/pcscan_internal.o
ninja: build stopped: subcommand failed.

I'm nothing more than a debian user and I'm not familiar with rust. What am I missing to obtain the missing libprofiler_builtins.rlib file?

[Aki]

Hello,

[..]
Searching for held packages returns empty:

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[phantom][chromium-124.0.6367.118][0]$ dpkg --get-selections |grep hold

[..]
Why does build-dep insist that rustc-web is a dependency? How can I build chromium?

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[phantom][~][0]$ lsb_release -a
No LSB modules are available.
Distributor ID: Debian
Description:    Debian GNU/Linux 12 (bookworm)
Release:        12
Codename:       bookworm

The current version of chromium for Debian Bookworm is 121.0.6167.139 with a version 125.0.6422.112-1 from stable-security:

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$ apt -a list chromium
Elencazione... Fatto
chromium/stable-security 125.0.6422.112-1~deb12u1 amd64
chromium/stable 121.0.6167.139-1~deb12u1 amd64

Those are chromium versions currently distributed with Debian:

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$ rmadison chromium
chromium   | 89.0.4389.114-1~deb10u1  | oldoldstable           | source, arm64
chromium   | 89.0.4389.114-1~deb10u1  | oldoldstable-debug     | source
chromium   | 90.0.4430.212-1~deb10u1  | oldoldstable           | source, amd64, armhf, i386
chromium   | 90.0.4430.212-1~deb10u1  | oldoldstable-debug     | source
chromium   | 120.0.6099.224-1~deb11u1 | oldstable              | source, amd64, arm64, armhf, i386, ppc64el
chromium   | 120.0.6099.224-1~deb11u1 | oldstable-debug        | source
chromium   | 121.0.6167.139-1~deb12u1 | stable                 | source, amd64, arm64, armhf, i386, ppc64el
chromium   | 121.0.6167.139-1~deb12u1 | stable-debug           | source
chromium   | 125.0.6422.60-1~deb12u1  | proposed-updates       | source, amd64, arm64, armhf, i386, ppc64el
chromium   | 125.0.6422.60-1~deb12u1  | proposed-updates-debug | source
chromium   | 125.0.6422.60-1          | testing                | source, amd64, arm64, armhf, i386, ppc64el
chromium   | 125.0.6422.76-1~deb12u1  | stable-new             | source, amd64, arm64, armhf, i386, ppc64el
chromium   | 125.0.6422.112-1~deb12u1 | stable-new             | source, amd64, arm64, armhf, i386, ppc64el
chromium   | 125.0.6422.141-1~deb12u1 | stable-new             | source, amd64, arm64, armhf, i386, ppc64el
chromium   | 125.0.6422.141-1         | buildd-unstable        | source, amd64, arm64, armhf, i386, ppc64el
chromium   | 125.0.6422.141-1         | unstable               | source, amd64, arm64, armhf, i386, ppc64el
chromium   | 125.0.6422.141-1         | unstable-debug         | source

As you can see, the version 124.0.6367.118 (you are trying to build) seems not to be from Debian.

The 124.* version is not listed at all. Where does version 124.0.6367.118 come from ?

[Aki]

Hello @ealfonsoy,

As @fabien pointed out to me, chromium version 124.0.6367.118 was at some time in the past present in some debian repository and it can currently be found in the snapshots repository:

• https://snapshot.debian.org/package/chromium/124.0.6367.118-1~deb12u1/

The current chromium versions for Debian Bookwork are:

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$ rmadison chromium -s bookworm
chromium   | 121.0.6167.139-1~deb12u1 | stable     | source, amd64, arm64, armhf, i386, ppc64el

and:

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$ rmadison chromium -s proposed-updates
chromium   | 125.0.6422.141-1~deb12u1 | proposed-updates | source, amd64, arm64, armhf, i386, ppc64el

The 125.0.6422.141-1~deb12u1 version is also available from security-stable (the repository where security fix packages are uploaded):

• Package: chromium (125.0.6422.141-1~deb12u1) [security]

This version 125.0.6422.141-1~deb12u1 depends on the rustc-web package which is not available in the Debian bookworm (alias "stable") repository.

However, the rustc-web package is available in the proposed-updates repository:

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$ rmadison rustc-web
rustc-web  | 1.70.0+dfsg1-7~deb11u1 | oldstable-proposed-updates       | source, amd64, arm64, armhf, i386, mips64el, ppc64el, s390x
rustc-web  | 1.70.0+dfsg1-7~deb11u1 | oldstable-proposed-updates-debug | source
rustc-web  | 1.70.0+dfsg1-7~deb12u2 | proposed-updates                 | source, amd64, arm64, armhf, i386, mips64el, ppc64el, s390x
rustc-web  | 1.70.0+dfsg1-7~deb12u2 | proposed-updates-debug           | source

Therefore, the chromium version 125.0.6422.141-1~deb12u1 can be built adding proposed-updates repository to /etc/at/sources.list:

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deb http://deb.debian.org/debian bookworm-proposed-updates main 

I tested it and the build process for chromium version 125.0.6422.141-1~deb12u1 starts regularly.

Hope this helps. Please let me know.