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davidgiven
Compiling FluxEngine on Raspberry Pi (Buster)
I've trying to compile on a Raspberry Pi (buster). I have installed the dependencies inthe documentation, but the make script is not recognising fmt.
pi@raspberrypi:~ $ cat /etc/os-release
PRETTY_NAME="Raspbian GNU/Linux 10 (buster)"
NAME="Raspbian GNU/Linux"
VERSION_ID="10"
VERSION="10 (buster)"
VERSION_CODENAME=buster
ID=raspbian
ID_LIKE=debian
HOME_URL="http://www.raspbian.org/"
SUPPORT_URL="http://www.raspbian.org/RaspbianForums"
BUG_REPORT_URL="http://www.raspbian.org/RaspbianBugs"
pi@raspberrypi:~ $ cd fluxengine/
pi@raspberrypi:~/fluxengine $ make
Package fmt was not found in the pkg-config search path.
Perhaps you should add the directory containing `fmt.pc'
to the PKG_CONFIG_PATH environment variable
No package 'fmt' found
Package fmt was not found in the pkg-config search path.
Perhaps you should add the directory containing `fmt.pc'
to the PKG_CONFIG_PATH environment variable
No package 'fmt' found
lib/build.mk:81: *** Missing required pkg-config dependency: fmt. Stop.
pi@raspberrypi:~/fluxengine $ sudo apt-get install libfmt-dev
Reading package lists... Done
Building dependency tree
Reading state information... Done
libfmt-dev is already the newest version (5.2.1+ds-2).
0 upgraded, 0 newly installed, 0 to remove and 2 not upgraded.
I can't locate a fmt.pc file to place in the PKG_CONFIG_PATH environment variable.
Any pointers would be greatly appreciated.
Cheers, Matt
Hmm. Could you do dpkg -L libfmt-dev? There should be a line there looking like /usr/lib/x86_64-linux-gnu/pkgconfig/fmt.pc (although different because you're on ARM).
Hi David,
Sure; here you go:
pi@raspberrypi:~/fluxengine $ dpkg -L libfmt-dev
/.
/usr
/usr/include
/usr/include/fmt
/usr/include/fmt/color.h
/usr/include/fmt/core.h
/usr/include/fmt/format-inl.h
/usr/include/fmt/format.h
/usr/include/fmt/ostream.h
/usr/include/fmt/posix.h
/usr/include/fmt/printf.h
/usr/include/fmt/ranges.h
/usr/include/fmt/time.h
/usr/lib
/usr/lib/arm-linux-gnueabihf
/usr/lib/arm-linux-gnueabihf/cmake
/usr/lib/arm-linux-gnueabihf/cmake/fmt
/usr/lib/arm-linux-gnueabihf/cmake/fmt/fmt-config-version.cmake
/usr/lib/arm-linux-gnueabihf/cmake/fmt/fmt-config.cmake
/usr/lib/arm-linux-gnueabihf/cmake/fmt/fmt-targets-none.cmake
/usr/lib/arm-linux-gnueabihf/cmake/fmt/fmt-targets.cmake
/usr/lib/arm-linux-gnueabihf/libfmt.a
/usr/share
/usr/share/doc
/usr/share/doc/libfmt-dev
/usr/share/doc/libfmt-dev/README.Debian
/usr/share/doc/libfmt-dev/changelog.Debian.gz
/usr/share/doc/libfmt-dev/changelog.gz
/usr/share/doc/libfmt-dev/copyright
I actually have now compiled this on Ubuntu 20.04, and it was fine, and am happily using fluxengine and Greaseweasel v4, but it would still be good to understand this issue.
Yeah, your version doesn't have the pkgconfig file in it. Which is wrong.
apt show libfmt-dev, please, and look at the version? Mine is 8.1.1+ds1-2.
My version appears to be older:
pi@raspberrypi:~ $ apt show libfmt-dev
Package: libfmt-dev
Version: 5.2.1+ds-2
Priority: optional
Section: libdevel
Source: fmtlib
Maintainer: Eugene V. Lyubimkin <[email protected]>
Installed-Size: 681 kB
Suggests: libfmt-doc
Conflicts: libcppformat1-dev, libcppformat2-dev, libfmt3-dev
Homepage: http://fmtlib.net/latest/index.html
Download-Size: 124 kB
APT-Manual-Installed: yes
APT-Sources: http://raspbian.raspberrypi.org/raspbian buster/main armhf Packages
Description: fast type-safe C++ formatting library -- development files
This library provides fast, type-safe, small, C++11-aware replacement of
(s)printf and related machinery. In some cases it's noticeably faster
than boost::format, boost::lexical_cast and even sprintf itself.
.
This package contains the development files, include the static library.
In case it's of use to anyone else, I upgraded the Pi to Bullseye, and the libfmt-dev version is later, and has compiled without issue.
pi@raspberrypi:~/fluxengine $ apt show libfmt-dev
Package: libfmt-dev
Version: 7.1.3+ds1-5
Priority: optional
Section: libdevel
Source: fmtlib
Maintainer: Shengjing Zhu <[email protected]>
Installed-Size: 550 kB
Depends: libfmt7 (= 7.1.3+ds1-5)
Suggests: libfmt-doc
Conflicts: libcppformat1-dev, libcppformat2-dev, libfmt3-dev
Breaks: libspdlog1 (<< 1:1.8.1+ds-2.1)
Homepage: https://fmt.dev/
Download-Size: 142 kB
APT-Manual-Installed: yes
APT-Sources: http://raspbian.raspberrypi.org/raspbian bullseye/main armhf Packages
Description: fast type-safe C++ formatting library -- development files
This library provides fast, type-safe, small, C++11-aware replacement of
(s)printf and related machinery. In some cases it's noticeably faster
than boost::format, boost::lexical_cast and even sprintf itself.
.
This package contains the development files, include the static library.
Good to know, thanks.
I'm afraid I'm limited as to just how many different library versions I can support --- I have to pick something which is reasonably sane...