"{fmt} is an open-source formatting library for C++. It can be used as a safe and fast alternative to (s)printf and iostreams."
See {fmt} documentation for usage and details.
Note: This is the source code for the build2 package of the {fmt} C++ library,
the actual library sources snapshot can be found in the ./upstream/ submodule.
Configuration Options:
config.fmt.enable_modules : Set to true to build and provide the fmt C++ modules. If the compiler and C++ version don't support C++ modules (which is C++ > 20), this will result in a compilation failure. Set to true if $cxx.features.modules == true which means the configuration is set to enable C++ modules, false otherwise.
Reviews
Builds
| toolchain |
public-0.18.1 |
| target |
x86_64-microsoft-win32-msvc14.5 |
| tgt config |
windows_10-msvc_18-static_O2 |
| timestamp |
2026-09-05 13:49:54 UTC (17:14:25 hours ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-microsoft-win32-msvc14.5 |
| tgt config |
windows_10-msvc_18-O2 |
| timestamp |
2026-09-05 13:49:04 UTC (17:15:15 hours ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-microsoft-win32-msvc14.5 |
| tgt config |
windows_10-msvc_18 |
| timestamp |
2026-09-05 13:48:53 UTC (17:15:26 hours ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-microsoft-win32-msvc14.3 |
| tgt config |
windows_10-msvc_17 |
| timestamp |
2026-09-05 10:37:47 UTC (20:26:32 hours ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-microsoft-win32-msvc14.5 |
| tgt config |
windows_10-clang_21_msvc_18-static_O2 |
| timestamp |
2026-09-05 10:36:10 UTC (20:28:09 hours ago) |
| result |
error (update) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-microsoft-win32-msvc14.5 |
| tgt config |
windows_10-clang_21_msvc_18-O2 |
| timestamp |
2026-09-05 10:36:04 UTC (20:28:15 hours ago) |
| result |
error (update) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-microsoft-win32-msvc14.5 |
| tgt config |
windows_10-clang_21_msvc_18 |
| timestamp |
2026-09-05 10:35:12 UTC (20:29:07 hours ago) |
| result |
error (update) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_ubuntu_26.04-gcc_15-bindist |
| timestamp |
2026-09-03 12:39:32 UTC (02 18:24:47 days ago) |
| result |
warning (update) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-w64-mingw32 |
| tgt config |
windows_10-gcc_15.2_mingw_w64-static_O2 |
| timestamp |
2026-09-03 11:52:15 UTC (02 19:12:04 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-w64-mingw32 |
| tgt config |
windows_10-gcc_15.2_mingw_w64 |
| timestamp |
2026-09-03 11:52:13 UTC (02 19:12:06 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-w64-mingw32 |
| tgt config |
windows_10-gcc_15.2_mingw_w64-O2 |
| timestamp |
2026-09-03 11:51:33 UTC (02 19:12:46 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_fedora_44-gcc_16-bindist |
| timestamp |
2026-08-30 11:27:28 UTC (06 19:36:51 days ago) |
| result |
warning (update) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-apple-darwin23.5.0 |
| tgt config |
macos_14-clang_15.0-static_O3 |
| timestamp |
2026-08-26 01:32:18 UTC (11 05:32:01 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-apple-darwin23.5.0 |
| tgt config |
macos_14-clang_15.0-O3 |
| timestamp |
2026-08-26 01:31:30 UTC (11 05:32:49 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-apple-darwin23.5.0 |
| tgt config |
macos_14-clang_15.0 |
| timestamp |
2026-08-26 01:30:19 UTC (11 05:34:00 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-clang_18_libc++-static_O3 |
| timestamp |
2026-08-25 13:43:54 UTC (11 17:20:25 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-clang_18_libc++-O3 |
| timestamp |
2026-08-25 13:43:41 UTC (11 17:20:38 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-clang_18-static_O3 |
| timestamp |
2026-08-25 13:43:20 UTC (11 17:20:59 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-clang_18_libc++ |
| timestamp |
2026-08-25 13:43:08 UTC (11 17:21:11 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-clang_18-O3 |
| timestamp |
2026-08-25 13:42:38 UTC (11 17:21:41 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-clang_18 |
| timestamp |
2026-08-25 13:42:36 UTC (11 17:21:43 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-apple-darwin22.5.0 |
| tgt config |
macos_13-clang_15.0 |
| timestamp |
2026-08-25 13:42:06 UTC (11 17:22:13 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_ubuntu_24.04-gcc_13-bindist |
| timestamp |
2026-08-25 13:29:46 UTC (11 17:34:33 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-freebsd15.0 |
| tgt config |
freebsd_15-clang_19-static_O3 |
| timestamp |
2026-08-25 13:01:23 UTC (11 18:02:57 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-freebsd15.0 |
| tgt config |
freebsd_15-clang_19-O3 |
| timestamp |
2026-08-25 13:00:52 UTC (11 18:03:27 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-freebsd15.0 |
| tgt config |
freebsd_15-clang_19 |
| timestamp |
2026-08-25 13:00:05 UTC (11 18:04:14 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-freebsd14.1 |
| tgt config |
freebsd_14-clang_18 |
| timestamp |
2026-08-25 12:46:08 UTC (11 18:18:11 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-apple-darwin23.5.0 |
| tgt config |
macos_14-gcc_14_homebrew-static_O3 |
| timestamp |
2026-08-25 11:57:01 UTC (11 19:07:18 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-apple-darwin23.5.0 |
| tgt config |
macos_14-gcc_14_homebrew-O3 |
| timestamp |
2026-08-25 11:56:18 UTC (11 19:08:01 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-apple-darwin23.5.0 |
| tgt config |
macos_14-gcc_14_homebrew |
| timestamp |
2026-08-25 11:55:33 UTC (11 19:08:46 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-gcc_13 |
| timestamp |
2026-08-25 11:34:07 UTC (11 19:30:12 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-gcc_16-static_O3 |
| timestamp |
2026-08-25 11:22:15 UTC (11 19:42:04 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-gcc_16-ndebug_O3 |
| timestamp |
2026-08-25 11:22:11 UTC (11 19:42:08 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-gcc_16 |
| timestamp |
2026-08-25 11:22:08 UTC (11 19:42:11 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-gcc_16-O3 |
| timestamp |
2026-08-25 11:21:34 UTC (11 19:42:45 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-gcc_14-bindist |
| timestamp |
2026-08-25 11:04:04 UTC (11 20:00:15 days ago) |
| result |
warning (update) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-gcc_14-ndebug_O3 |
| timestamp |
2026-08-25 10:58:33 UTC (11 20:05:47 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-gcc_14-static_O3 |
| timestamp |
2026-08-25 10:58:02 UTC (11 20:06:17 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-gcc_14-O3 |
| timestamp |
2026-08-25 10:57:58 UTC (11 20:06:21 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-gcc_14 |
| timestamp |
2026-08-25 10:57:29 UTC (11 20:06:50 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-gcc_15-O3 |
| timestamp |
2026-08-25 10:56:03 UTC (11 20:08:16 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-gcc_15 |
| timestamp |
2026-08-25 10:55:23 UTC (11 20:08:56 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-clang_22_libc++-static_O3 |
| timestamp |
2026-08-25 10:53:32 UTC (11 20:10:47 days ago) |
| result |
error (update) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-clang_22_libc++-O3 |
| timestamp |
2026-08-25 10:53:29 UTC (11 20:10:50 days ago) |
| result |
error (update) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-clang_22_libc++ |
| timestamp |
2026-08-25 10:52:55 UTC (11 20:11:24 days ago) |
| result |
error (update) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-clang_22-static_O3 |
| timestamp |
2026-08-25 10:52:50 UTC (11 20:11:30 days ago) |
| result |
error (update) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-clang_22-O3 |
| timestamp |
2026-08-25 10:52:40 UTC (11 20:11:39 days ago) |
| result |
error (update) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-clang_22 |
| timestamp |
2026-08-25 10:52:18 UTC (11 20:12:01 days ago) |
| result |
error (update) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-clang_21_libc++ |
| timestamp |
2026-08-25 10:23:27 UTC (11 20:40:52 days ago) |
| result |
error (update) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-clang_21 |
| timestamp |
2026-08-25 10:23:14 UTC (11 20:41:06 days ago) |
| result |
error (update) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_fedora_43-gcc_15-bindist |
| timestamp |
2026-08-23 10:38:16 UTC (13 20:26:03 days ago) |
| result |
warning (update) | log | rebuild |