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MiRipples does not build on arm, so I have updated the package to exclude that UGen on any architecture that isn't x86

Upstream has fixed a lot of things, and so this PKGBUILD should be simplified. All plugins build on Raspberry Pi now as well.

This is a working PKGBUILD:

# Maintainer: Mads Kjeldgaard <mail@madskjeldgaard.dk>
pkgname=supercollider-mi-ugens-git
pkgver=r133.20716e2
pkgrel=1
pkgdesc="SuperCollider UGen versions of Mutable Instruments synthesizer modules"
arch=('any')
url="https://github.com/v7b1/mi-UGens"
license=('GPL')
groups=('pro-audio' 'supercollider-plugins' )
depends=()
makedepends=('git' 'cmake' 'gcc-libs' 'supercollider-headers-git')
optdepends=()
source=("$pkgname::git+$url.git")
md5sums=('SKIP')

pkgver() {
        cd "$srcdir/$pkgname"
        printf "r%s.%s" "$(git rev-list --count HEAD)" "$(git rev-parse --short HEAD)"
}

build() {
        cd "$pkgname"

        # Get dependencies
        git submodule update --init --recursive
        # Files to build
        SC_SRC="/usr/share/supercollider-headers"

    mkdir build
    cd build

    cmake -DSC_PATH=$SC_SRC -DCMAKE_INSTALL_PREFIX="miugens-build" -DCMAKE_BUILD_TYPE=RELEASE ..
    make install

}

package() {
        DEST="$pkgdir/usr/share/SuperCollider/Extensions/$pkgname/"
    cd "$pkgname"

    mkdir -p $DEST
    cp -r "build/miugens-build" "$DEST"
}

On x86_64, I get this error when attempting to build/install this package:

Submodule 'projects/MiBraids/libsamplerate' (https://github.com/libsndfile/libsamplerate) registered for path 'projects/MiBraids/libsamplerate'
Cloning into '/home/modula/.cache/paru/clone/supercollider-mi-ugens-git/src/supercollider-mi-ugens-git/projects/MiBraids/libsamplerate'...
Submodule path 'projects/MiBraids/libsamplerate': checked out 'c164eaa25ffdeedc7d25e731172cc45a25f483d4'
/home/modula/.cache/paru/clone/supercollider-mi-ugens-git/PKGBUILD: line 45: cd: MiRipples: No such file or directory
==> ERROR: A failure occurred in build().
    Aborting...

I tried commenting out MiRipples from the folders array, but then I got the same error for MiClouds instead.

I also tried adding cd projects after the cd "$pkgname" line, but then I got this error:

CMake Warning (dev) at CMakeLists.txt:4 (project):
  cmake_minimum_required() should be called prior to this top-level project()
  call.  Please see the cmake-commands(7) manual for usage documentation of
  both commands.
This warning is for project developers.  Use -Wno-dev to suppress it.

-- The C compiler identification is GNU 14.1.1
-- The CXX compiler identification is GNU 14.1.1
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
CMake Warning (dev) in CMakeLists.txt:
  No cmake_minimum_required command is present.  A line of code such as

    cmake_minimum_required(VERSION 3.29)

  should be added at the top of the file.  The version specified may be lower
  if you wish to support older CMake versions for this project.  For more
  information run "cmake --help-policy CMP0000".
This warning is for project developers.  Use -Wno-dev to suppress it.

-- Configuring done (0.4s)
-- Generating done (0.0s)
-- Build files have been written to: /home/modula/.cache/paru/clone/supercollider-mi-ugens-git/src/supercollider-mi-ugens-git/projects/MiRipples/build
[ 33%] Building CXX object CMakeFiles/MiRipples.dir/MiRipples.o
In file included from /usr/share/supercollider-headers/include/plugin_interface/SC_PlugIn.h:25,
                 from /home/modula/.cache/paru/clone/supercollider-mi-ugens-git/src/supercollider-mi-ugens-git/projects/MiRipples/MiRipples.cpp:33:
/usr/share/supercollider-headers/include/plugin_interface/SC_Unit.h:96:32: error: ‘copyAndCastToTypeOfFirstArg’ function uses ‘auto’ type specifier without trailing return type
   96 | [[nodiscard]] inline constexpr auto copyAndCastToTypeOfFirstArg(const ToType&, const Value& value) noexcept {
      |                                ^~~~
/usr/share/supercollider-headers/include/plugin_interface/SC_Unit.h:96:32: note: deduced return type only available with ‘-std=c++14’ or ‘-std=gnu++14’
/usr/share/supercollider-headers/include/plugin_interface/SC_Unit.h: In function ‘constexpr auto copyAndCastToTypeOfFirstArg(const ToType&, const Value&)’:
/usr/share/supercollider-headers/include/plugin_interface/SC_Unit.h:97:26: error: ‘remove_cv_t’ in namespace ‘std’ does not name a template type; did you mean ‘remove_cv’?
   97 |     using TargetT = std::remove_cv_t<std::remove_reference_t<ToType>>;
      |                          ^~~~~~~~~~~
      |                          remove_cv
/usr/share/supercollider-headers/include/plugin_interface/SC_Unit.h:98:24: error: ‘TargetT’ does not name a type
   98 |     return static_cast<TargetT>(value);
      |                        ^~~~~~~
make[2]: *** [CMakeFiles/MiRipples.dir/build.make:76: CMakeFiles/MiRipples.dir/MiRipples.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:83: CMakeFiles/MiRipples.dir/all] Error 2
make: *** [Makefile:136: all] Error 2
==> ERROR: A failure occurred in build().
    Aborting...

MiRipples does not build on arm, so I have updated the package to exclude that UGen on any architecture that isn't x86