Bug: some formulae fail to build when `ccache` is installed #6920

matteosecli · 2026-06-25T09:44:36Z

matteosecli
Jun 25, 2026

How to reproduce

docker run --rm -it ghcr.io/homebrew/ubuntu24.04:main \
bash -lc 'brew install --yes ccache && brew install --yes --build-from-source ada-url'

Output

✔︎ JSON API packages.arm64_linux.jws.json                                                     Downloaded   15.2MB/ 15.2MB
==> Fetching downloads for: ccache
✔︎ Bottle Manifest ccache (4.13.6_1)                                                          Downloaded   16.6KB/ 16.6KB
✔︎ Bottle Manifest fmt (12.2.0)                                                               Downloaded    7.3KB/  7.3KB
✔︎ Bottle Manifest ca-certificates (2026-05-14)                                               Downloaded    1.7KB/  1.7KB
✔︎ Bottle Manifest hiredis (1.4.0)                                                            Downloaded    9.6KB/  9.6KB
✔︎ Bottle Manifest xxhash (0.8.3)                                                             Downloaded   10.4KB/ 10.4KB
✔︎ Bottle Manifest blake3 (1.8.5)                                                             Downloaded    7.4KB/  7.4KB
✔︎ Bottle Manifest openssl@3 (3.6.2)                                                          Downloaded   12.0KB/ 12.0KB
✔︎ Bottle blake3 (1.8.5)                                                                      Downloaded   25.4KB/ 25.4KB
✔︎ Bottle ca-certificates (2026-05-14)                                                        Downloaded  112.1KB/112.1KB
✔︎ Bottle Manifest xz (5.8.3)                                                                 Downloaded   11.8KB/ 11.8KB
✔︎ Bottle Manifest zlib-ng-compat (2.3.3_1)                                                   Downloaded    7.3KB/  7.3KB
✔︎ Bottle Manifest zstd (1.5.7_1)                                                             Downloaded   13.2KB/ 13.2KB
✔︎ Bottle Manifest lz4 (1.10.0)                                                               Downloaded   13.8KB/ 13.8KB
✔︎ Bottle xxhash (0.8.3)                                                                      Downloaded  178.0KB/178.0KB
✔︎ Bottle hiredis (1.4.0)                                                                     Downloaded  202.6KB/202.6KB
✔︎ Bottle fmt (12.2.0)                                                                        Downloaded  355.5KB/355.5KB
✔︎ Bottle zlib-ng-compat (2.3.3_1)                                                            Downloaded  200.4KB/200.4KB
✔︎ Bottle lz4 (1.10.0)                                                                        Downloaded  327.4KB/327.4KB
✔︎ Bottle xz (5.8.3)                                                                          Downloaded  852.5KB/852.5KB
✔︎ Bottle ccache (4.13.6_1)                                                                   Downloaded  741.1KB/741.1KB
✔︎ Bottle zstd (1.5.7_1)                                                                      Downloaded    1.1MB/  1.1MB
✔︎ Bottle openssl@3 (3.6.2)                                                                   Downloaded   12.2MB/ 12.2MB
==> Installing dependencies for ccache: blake3, fmt, ca-certificates, openssl@3, hiredis, xxhash, lz4, xz, zlib-ng-compat and zstd
==> Installing ccache dependency: blake3
==> Pouring blake3--1.8.5.arm64_linux.bottle.tar.gz
🍺  /home/linuxbrew/.linuxbrew/Cellar/blake3/1.8.5: 13 files, 121.0KB
==> Installing ccache dependency: fmt
==> Pouring fmt--12.2.0.arm64_linux.bottle.tar.gz
🍺  /home/linuxbrew/.linuxbrew/Cellar/fmt/12.2.0: 31 files, 1.3MB
==> Installing ccache dependency: ca-certificates
==> Pouring ca-certificates--2026-05-14.all.bottle.tar.gz
Warning: Sandbox unavailable: running post-install without sandboxing!
Loaded 146 system certificates
Loaded 14 Mozilla certificates
==> CA certificates have been bootstrapped from the system CA store at /etc/ssl/certs/ca-certificates.crt
🍺  /home/linuxbrew/.linuxbrew/Cellar/ca-certificates/2026-05-14: 4 files, 215.2KB
==> Installing ccache dependency: openssl@3
==> Pouring openssl@3--3.6.2.arm64_linux.bottle.tar.gz
Warning: Sandbox unavailable: running post-install without sandboxing!
🍺  /home/linuxbrew/.linuxbrew/Cellar/openssl@3/3.6.2: 7,637 files, 45.6MB
==> Installing ccache dependency: hiredis
==> Pouring hiredis--1.4.0.arm64_linux.bottle.tar.gz
🍺  /home/linuxbrew/.linuxbrew/Cellar/hiredis/1.4.0: 53 files, 709.6KB
==> Installing ccache dependency: xxhash
==> Pouring xxhash--0.8.3.arm64_linux.bottle.tar.gz
🍺  /home/linuxbrew/.linuxbrew/Cellar/xxhash/0.8.3: 28 files, 711.0KB
==> Installing ccache dependency: lz4
==> Pouring lz4--1.10.0.arm64_linux.bottle.1.tar.gz
🍺  /home/linuxbrew/.linuxbrew/Cellar/lz4/1.10.0: 24 files, 981.9KB
==> Installing ccache dependency: xz
==> Pouring xz--5.8.3.arm64_linux.bottle.tar.gz
🍺  /home/linuxbrew/.linuxbrew/Cellar/xz/5.8.3: 97 files, 3.2MB
==> Installing ccache dependency: zlib-ng-compat
==> Pouring zlib-ng-compat--2.3.3_1.arm64_linux.bottle.tar.gz
🍺  /home/linuxbrew/.linuxbrew/Cellar/zlib-ng-compat/2.3.3_1: 17 files, 575.1KB
==> Installing ccache dependency: zstd
==> Pouring zstd--1.5.7_1.arm64_linux.bottle.tar.gz
🍺  /home/linuxbrew/.linuxbrew/Cellar/zstd/1.5.7_1: 32 files, 3MB
==> Installing ccache
==> Pouring ccache--4.13.6_1.arm64_linux.bottle.tar.gz
==> Caveats
To install symlinks for compilers that will automatically use
ccache, prepend this directory to your PATH:
  /home/linuxbrew/.linuxbrew/opt/ccache/libexec

If this is an upgrade and you have previously added the symlinks to
your PATH, you may need to modify it to the path specified above so
it points to the current version.

NOTE: ccache can prevent some software from compiling.
ALSO NOTE: The brew command, by design, will never use ccache.
==> Summary
🍺  /home/linuxbrew/.linuxbrew/Cellar/ccache/4.13.6_1: 89 files, 2.2MB
==> Running `brew cleanup ccache`...
Disable this behaviour by setting `HOMEBREW_NO_INSTALL_CLEANUP=1`.
Hide these hints with `HOMEBREW_NO_ENV_HINTS=1` (see `man brew`).
==> Caveats
==> ccache
To install symlinks for compilers that will automatically use
ccache, prepend this directory to your PATH:
  /home/linuxbrew/.linuxbrew/opt/ccache/libexec

If this is an upgrade and you have previously added the symlinks to
your PATH, you may need to modify it to the path specified above so
it points to the current version.

NOTE: ccache can prevent some software from compiling.
ALSO NOTE: The brew command, by design, will never use ccache.
==> Fetching downloads for: ada-url
✔︎ API Source ada-url.rb                                                                      Verified      3.2KB/  3.2KB
✔︎ Bottle Manifest ncurses (6.6)                                                              Downloaded   11.9KB/ 11.9KB
✔︎ Bottle Manifest cmake (4.3.4)                                                              Downloaded   11.7KB/ 11.7KB
✔︎ Bottle Manifest cxxopts (3.3.1)                                                            Downloaded    2.0KB/  2.0KB
✔︎ Bottle cxxopts (3.3.1)                                                                     Downloaded   22.5KB/ 22.5KB
✔︎ Bottle Manifest mpdecimal (4.0.1)                                                          Downloaded   11.9KB/ 11.9KB
✔︎ Bottle Manifest readline (8.3.3)                                                           Downloaded   10.0KB/ 10.0KB
✔︎ Bottle Manifest sqlite (3.53.2)                                                            Downloaded   11.8KB/ 11.8KB
✔︎ Bottle Manifest bzip2 (1.0.8)                                                              Downloaded   12.8KB/ 12.8KB
✔︎ Bottle Manifest expat (2.8.1)                                                              Downloaded    7.5KB/  7.5KB
✔︎ Bottle Manifest libedit (20260512-3.1)                                                     Downloaded    7.7KB/  7.7KB
✔︎ Bottle Manifest libffi (3.6.0)                                                             Downloaded    7.2KB/  7.2KB
✔︎ Bottle Manifest python@3.14 (3.14.6)                                                       Downloaded   31.3KB/ 31.3KB
✔︎ Bottle bzip2 (1.0.8)                                                                       Downloaded  244.0KB/244.0KB
✔︎ Bottle expat (2.8.1)                                                                       Downloaded  262.3KB/262.3KB
✔︎ Bottle libedit (20260512-3.1)                                                              Downloaded  266.8KB/266.8KB
✔︎ Bottle mpdecimal (4.0.1)                                                                   Downloaded  243.8KB/243.8KB
✔︎ Bottle libffi (3.6.0)                                                                      Downloaded  278.2KB/278.2KB
✔︎ Formula ada-url (3.4.4)                                                                    Verified    491.8KB/491.8KB
✔︎ Bottle readline (8.3.3)                                                                    Downloaded  848.5KB/848.5KB
✔︎ Bottle ncurses (6.6)                                                                       Downloaded    2.8MB/  2.8MB
✔︎ Bottle sqlite (3.53.2)                                                                     Downloaded    3.1MB/  3.1MB
✔︎ Bottle cmake (4.3.4)                                                                       Downloaded   23.2MB/ 23.2MB
✔︎ Bottle python@3.14 (3.14.6)                                                                Downloaded   21.2MB/ 21.2MB
==> Installing dependencies for ada-url: ncurses, cmake, cxxopts, mpdecimal, readline, sqlite, bzip2, expat, libedit, libffi and python@3.14
==> Installing ada-url dependency: ncurses
==> Pouring ncurses--6.6.arm64_linux.bottle.tar.gz
🍺  /home/linuxbrew/.linuxbrew/Cellar/ncurses/6.6: 4,071 files, 12.8MB
==> Installing ada-url dependency: cmake
==> Pouring cmake--4.3.4.arm64_linux.bottle.tar.gz
🍺  /home/linuxbrew/.linuxbrew/Cellar/cmake/4.3.4: 4,044 files, 64.1MB
==> Installing ada-url dependency: cxxopts
==> Pouring cxxopts--3.3.1.all.bottle.1.tar.gz
🍺  /home/linuxbrew/.linuxbrew/Cellar/cxxopts/3.3.1: 11 files, 113.7KB
==> Installing ada-url dependency: mpdecimal
==> Pouring mpdecimal--4.0.1.arm64_linux.bottle.tar.gz
🍺  /home/linuxbrew/.linuxbrew/Cellar/mpdecimal/4.0.1: 22 files, 889.5KB
==> Installing ada-url dependency: readline
==> Pouring readline--8.3.3.arm64_linux.bottle.tar.gz
🍺  /home/linuxbrew/.linuxbrew/Cellar/readline/8.3.3: 56 files, 3.1MB
==> Installing ada-url dependency: sqlite
==> Pouring sqlite--3.53.2.arm64_linux.bottle.tar.gz
🍺  /home/linuxbrew/.linuxbrew/Cellar/sqlite/3.53.2: 13 files, 7MB
==> Installing ada-url dependency: bzip2
==> Pouring bzip2--1.0.8.arm64_linux.bottle.2.tar.gz
🍺  /home/linuxbrew/.linuxbrew/Cellar/bzip2/1.0.8: 32 files, 1MB
==> Installing ada-url dependency: expat
==> Pouring expat--2.8.1.arm64_linux.bottle.tar.gz
🍺  /home/linuxbrew/.linuxbrew/Cellar/expat/2.8.1: 23 files, 919.2KB
==> Installing ada-url dependency: libedit
==> Pouring libedit--20260512-3.1.arm64_linux.bottle.tar.gz
🍺  /home/linuxbrew/.linuxbrew/Cellar/libedit/20260512-3.1: 61 files, 1.9MB
==> Installing ada-url dependency: libffi
==> Pouring libffi--3.6.0.arm64_linux.bottle.tar.gz
🍺  /home/linuxbrew/.linuxbrew/Cellar/libffi/3.6.0: 19 files, 1MB
==> Installing ada-url dependency: python@3.14
==> Pouring python@3.14--3.14.6.arm64_linux.bottle.tar.gz
🍺  /home/linuxbrew/.linuxbrew/Cellar/python@3.14/3.14.6: 3,299 files, 86.8MB
==> Installing ada-url
Warning: Sandbox unavailable: building without sandboxing!
==> cmake -S . -B build -DCMAKE_INSTALL_RPATH=$ORIGIN/../lib -DBUILD_SHARED_LIBS=ON -DADA_TOOLS=ON -DCPM_LOCAL_PACKAGES_
==> cmake --build build
Last 15 lines from /home/linuxbrew/.cache/Homebrew/Logs/ada-url/02.cmake.log:
/usr/bin/make  -f src/CMakeFiles/ada.dir/build.make src/CMakeFiles/ada.dir/depend
make[2]: Entering directory '/var/tmp/ada-url-20260625-2694-eauoaw/ada-3.4.4/build'
cd /var/tmp/ada-url-20260625-2694-eauoaw/ada-3.4.4/build && /home/linuxbrew/.linuxbrew/opt/cmake/bin/cmake -E cmake_depends "Unix Makefiles" /var/tmp/ada-url-20260625-2694-eauoaw/ada-3.4.4 /var/tmp/ada-url-20260625-2694-eauoaw/ada-3.4.4/src /var/tmp/ada-url-20260625-2694-eauoaw/ada-3.4.4/build /var/tmp/ada-url-20260625-2694-eauoaw/ada-3.4.4/build/src /var/tmp/ada-url-20260625-2694-eauoaw/ada-3.4.4/build/src/CMakeFiles/ada.dir/DependInfo.cmake "--color=" ada
make[2]: Leaving directory '/var/tmp/ada-url-20260625-2694-eauoaw/ada-3.4.4/build'
/usr/bin/make  -f src/CMakeFiles/ada.dir/build.make src/CMakeFiles/ada.dir/build
make[2]: Entering directory '/var/tmp/ada-url-20260625-2694-eauoaw/ada-3.4.4/build'
[ 25%] Building CXX object src/CMakeFiles/ada.dir/ada.cpp.o
cd /var/tmp/ada-url-20260625-2694-eauoaw/ada-3.4.4/build/src && ccache /home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/shims/linux/super/g++-13 -DADA_INCLUDE_URL_PATTERN=1 -Dada_EXPORTS -I/var/tmp/ada-url-20260625-2694-eauoaw/ada-3.4.4/src -I/var/tmp/ada-url-20260625-2694-eauoaw/ada-3.4.4/include -O3 -DNDEBUG -std=c++20 -fPIC -Wall -Wextra -Weffc++ -Wsuggest-override -Wfatal-errors -Wsign-compare -Wshadow -Wwrite-strings -Wpointer-arith -Winit-self -Wconversion -Wno-sign-conversion -MD -MT src/CMakeFiles/ada.dir/ada.cpp.o -MF CMakeFiles/ada.dir/ada.cpp.o.d -o CMakeFiles/ada.dir/ada.cpp.o -c /var/tmp/ada-url-20260625-2694-eauoaw/ada-3.4.4/src/ada.cpp
/bin/sh: 1: ccache: not found
make[2]: *** [src/CMakeFiles/ada.dir/build.make:82: src/CMakeFiles/ada.dir/ada.cpp.o] Error 127
make[2]: Leaving directory '/var/tmp/ada-url-20260625-2694-eauoaw/ada-3.4.4/build'
make[1]: *** [CMakeFiles/Makefile2:174: src/CMakeFiles/ada.dir/all] Error 2
make[1]: Leaving directory '/var/tmp/ada-url-20260625-2694-eauoaw/ada-3.4.4/build'
make: *** [Makefile:139: all] Error 2


READ THIS: https://docs.brew.sh/Troubleshooting

Affected formulae

So far I was able to identify only ada-url and merve, while trying to build node.

Workarounds

By looking at ada-url's CMakeLists.txt, for example, ccache is used only if found by find_program, which also looks outside of $PATH. However, ccache is not on $PATH, so the actual invocation fails.

1. Not having `ccache`

docker run --rm -it ghcr.io/homebrew/ubuntu24.04:main \
bash -lc 'brew install --yes --build-from-source ada-url'

2. Adding `ccache` as a build dependency

docker run --rm -it ghcr.io/homebrew/ubuntu24.04:main \
bash -lc 'set -euo pipefail; f="$(brew edit --print-path ada-url)"; grep -q '\''depends_on "ccache" => :build'\'' "$f" || sed -i '\''/^[[:space:]]*license /a\  depends_on "ccache" => :build'\'' "$f"; HOMEBREW_NO_INSTALL_FROM_API=1 brew install --yes --build-from-source ada-url'

However, I know this is frowned upon by Homebrew.

Answered by SMillerDev

Jun 25, 2026

You can make a PR adding it to the std_cmake_args in Homebrew/brew. But I don't think we should add a flag to a couple of formula to avoid picking up an unsupported configuration.

View full answer

SMillerDev · 2026-06-25T09:48:27Z

SMillerDev
Jun 25, 2026
Collaborator

That's not a bug in Homebrew and should instead be reported to the tools that fail to build if ccache is present but not in the path.

3 replies

matteosecli Jun 25, 2026
Author

Hi @SMillerDev, thanks for getting back to me, I'll definitely report this upstream.

In the meantime, would you consider a PR that adds -DCCACHE_FOUND:BOOL=OFF to the CMake flags of the affected packages?

I just tested it:

docker run --rm -it ghcr.io/homebrew/ubuntu24.04:main \
bash -lc 'set -euo pipefail; brew install --yes ccache; f="$(brew edit --print-path ada-url)"; sed -i "/args = %W\[/a\    -DCCACHE_FOUND:BOOL=OFF" "$f";HOMEBREW_NO_INSTALL_FROM_API=1 brew install --yes --build-from-source ada-url'

and it seems to work, whether ccache is installed or not.

SMillerDev Jun 25, 2026
Collaborator

You can make a PR adding it to the std_cmake_args in Homebrew/brew. But I don't think we should add a flag to a couple of formula to avoid picking up an unsupported configuration.

Answer selected by matteosecli

matteosecli Jun 28, 2026
Author

I've opened Homebrew/brew#22902 with the suggested changes. I also did some digging and found more formulae with the same issue, I've listed them in the PR.

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Bug: some formulae fail to build when `ccache` is installed #6920

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Homebrew

Bug: some formulae fail to build when ccache is installed #6920

Uh oh!

matteosecli Jun 25, 2026

How to reproduce

Affected formulae

Workarounds

1. Not having ccache

2. Adding ccache as a build dependency

Replies: 1 comment · 3 replies

Uh oh!

SMillerDev Jun 25, 2026 Collaborator

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matteosecli Jun 25, 2026 Author

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SMillerDev Jun 25, 2026 Collaborator

Uh oh!

matteosecli Jun 28, 2026 Author

Bug: some formulae fail to build when `ccache` is installed #6920

matteosecli
Jun 25, 2026

1. Not having `ccache`

2. Adding `ccache` as a build dependency

Replies: 1 comment 3 replies

SMillerDev
Jun 25, 2026
Collaborator

matteosecli Jun 25, 2026
Author

SMillerDev Jun 25, 2026
Collaborator

matteosecli Jun 28, 2026
Author