Arch Linux User Repository

If the build fails:

• Clear your aur helper cache and SRCPKGDEST directory
• Rebuild in clean chroot 1
• If it still fails, use a paste bin 2 to show full build logs

There's a package build already which you can try out from my repo.

FAQ:

• The dependencies are correct. fmt and nlohmann_json are configured as subprojects for ease of development on my end, and it's only natural to statically link C++ projects, as ABI stability with exported C++ libraries isn't a thing (compared to C).
• If you think pod2man is missing, it's a configuration problem on your end. pod2man is part of the perl package, but in a perl-specific PATH handled by /etc/profile.d/perlbin.sh
• I'm only able to test auracle on i686 and x86_64, so that's what I'm willing to commit to in the PKGBUILD. If you want to build this on some other architecture, use makepkg -A. The "any" architecture is reserved for packages with architecture independent files (and compiled C++ is not).

@rarvolt I had the same issue on an less-frequently updated Arch Linux system today. After a system update, everything went fine. Amongst others, gtest was updated from 1.8.1-3 -> 1.10.0-1.

I don't support Manjaro. They're shipping an old version of gtest.

Can't build auracle on fresh install of Manjaro:

The Meson build system
Version: 0.54.2
Source dir: /home/rarvolt/AUR/auracle-git/src/auracle
Build dir: /home/rarvolt/AUR/auracle-git/src/auracle/build
Build type: native build
Project name: auracle
Project version: 0
Using 'CXXFLAGS' from environment with value: '-march=x86-64 -mtune=generic -O2 -pipe -fstack-protector-strong -fno-plt'
Using 'LDFLAGS' from environment with value: '-Wl,-O1,--sort-common,--as-needed,-z,relro,-z,now'
Using 'CPPFLAGS' from environment with value: '-D_FORTIFY_SOURCE=2'
Using 'CXXFLAGS' from environment with value: '-march=x86-64 -mtune=generic -O2 -pipe -fstack-protector-strong -fno-plt'
Using 'LDFLAGS' from environment with value: '-Wl,-O1,--sort-common,--as-needed,-z,relro,-z,now'
Using 'CPPFLAGS' from environment with value: '-D_FORTIFY_SOURCE=2'
C++ compiler for the host machine: c++ (gcc 10.1.0 "c++ (GCC) 10.1.0")
C++ linker for the host machine: c++ ld.bfd 2.34.0
Host machine cpu family: x86_64
Host machine cpu: x86_64
Compiler for C++ supports arguments -ffunction-sections: YES 
Compiler for C++ supports arguments -fdata-sections: YES 
Compiler for C++ supports link arguments -Wl,--gc-sections: YES 
Found pkg-config: /usr/bin/pkg-config (1.7.3)
Did not find CMake 'cmake'
Found CMake: NO
Run-time dependency nlohmann_json found: NO (tried pkgconfig and cmake)
Looking for a fallback subproject for the dependency nlohmann_json
Downloading nlohmann_json source from https://github.com/nlohmann/json/releases/download/v3.7.3/include.zip
Download size: 280969
Downloading: ..........

|Executing subproject nlohmann_json method meson 
|
|Project name: nlohmann_json
|Project version: 3.7.3
|C++ compiler for the host machine: c++ (gcc 10.1.0 "c++ (GCC) 10.1.0")
|C++ linker for the host machine: c++ ld.bfd 2.34.0
|Build targets in project: 0
|Subproject nlohmann_json finished.

Dependency nlohmann_json from subproject subprojects/nlohmann_json found: YES 3.7.3
Run-time dependency libalpm found: YES 12.0.1
Run-time dependency libcurl found: YES 7.70.0
Run-time dependency fmt found: NO (tried pkgconfig and cmake)
Looking for a fallback subproject for the dependency fmt
Downloading fmt source from https://github.com/fmtlib/fmt/archive/6.2.0.tar.gz
Downloading file of unknown size.
Downloading fmt patch from https://github.com/mesonbuild/fmt/releases/download/6.2.0-1/fmt.zip
Download size: 1078
Downloading: ..........

|Executing subproject fmt method meson 
|
|Project name: fmt
|Project version: 6.2.0
|C++ compiler for the host machine: c++ (gcc 10.1.0 "c++ (GCC) 10.1.0")
|C++ linker for the host machine: c++ ld.bfd 2.34.0
|Build targets in project: 1
|Subproject fmt finished.

Dependency fmt from subproject subprojects/fmt found: YES 6.2.0
Run-time dependency libsystemd found: YES 245
Run-time dependency GTest found: YES 1.8.1
Run-time dependency GMock found: YES 1.8.1
Downloading abseil-cpp source from https://github.com/abseil/abseil-cpp/archive/20200225.2.zip
Downloading file of unknown size.
Downloading abseil-cpp patch from https://github.com/mesonbuild/abseil-cpp/releases/download/20200225.2-1/abseil-cpp.zip
Download size: 2585
Downloading: ..........

|Executing subproject abseil-cpp method meson 
|
|Project name: abseil-cpp
|Project version: 20200225.2
|C++ compiler for the host machine: c++ (gcc 10.1.0 "c++ (GCC) 10.1.0")
|C++ linker for the host machine: c++ ld.bfd 2.34.0
|Compiler for C++ supports arguments -Wno-sign-compare -Wsign-compare: YES 
|Run-time dependency threads found: YES
|Build targets in project: 13
|Subproject abseil-cpp finished.

Program pod2man found: YES (/usr/bin/core_perl/pod2man)
Program python3 found: YES (/usr/bin/python3)
Build targets in project: 26

auracle 0

  Subprojects
       abseil-cpp: YES
              fmt: YES
    nlohmann_json: YES

Found ninja-1.10.0 at /usr/bin/ninja
ninja: Entering directory `build'
[134/150] Compiling C++ object...xe/src_auracle_sort_test.cc.o'
FAILED: sort_test@exe/src_auracle_sort_test.cc.o 
c++ -Isort_test@exe -I. -I.. -I../src -Isubprojects/abseil-cpp-20200225.2 -I../subprojects/abseil-cpp-20200225.2 -fdiagnostics-color=always -pipe -D_FILE_OFFSET_BITS=64 -std=c++17 '-DPROJECT_VERSION="0"' -ffunction-sections -fdata-sections -march=x86-64 -mtune=generic -O2 -fstack-protector-strong -fno-plt -D_FORTIFY_SOURCE=2 -pthread -DGTEST_HAS_PTHREAD=1 -MD -MQ 'sort_test@exe/src_auracle_sort_test.cc.o' -MF 'sort_test@exe/src_auracle_sort_test.cc.o.d' -o 'sort_test@exe/src_auracle_sort_test.cc.o' -c ../src/auracle/sort_test.cc
../src/auracle/sort_test.cc:110:25: error: expected constructor, destructor, or type conversion before ‘(’ token
  110 | INSTANTIATE_TEST_SUITE_P(BothOrderings, SortOrderTest,
      |                         ^
../src/auracle/sort_test.cc:121:27: error: expected unqualified-id before ‘)’ token
  121 |                          });
      |                           ^
[141/150] Compiling C++ object...@sta/src_auracle_auracle.cc.o'
ninja: build stopped: subcommand failed.

FAQ:

• The dependencies are correct. fmt and nlohmann_json are configured as subprojects for ease of development on my end, and it's only natural to statically link C++ projects, as ABI stability with exported C++ libraries isn't a thing (compared to C).
• If you think pod2man is missing, it's a configuration problem on your end. pod2man is part of the perl package, but in a perl-specific PATH handled by /etc/profile.d/perlbin.sh
• I'm only able to test auracle on i686 and x86_64, so that's what I'm willing to commit to in the PKGBUILD. If you want to build this on some other architecture, use makepkg -A. The "any" architecture is reserved for packages with architecture independent files (and compiled C++ is not).

fmt is something of a moving target in terms of API, and ABI stability isn't a thing with exported c++ libraries. Therefore, for my own sanity, working with an embedded fmt that I can guarantee compiles with current auracle is ideal.

Long term, the dep will go away and I'll move to std::format.

While it's indeed not, why download it when you can pull it in as a dependency?

No, it's not.

fmt missing from makedepends

And what package is pod2man part of?

I'll answer that for you. It's perl. It's in the makedepends already. It's not part of the standard PATH, but /etc/profile.d/perlbin.sh ensures you have this available.