+videolan.org/libplacebo (#4295)

* new file:   projects/videolan.org/libplacebo/package.yml
	new file:   projects/videolan.org/libplacebo/test.c

* linux fix

* gcc for test

projects/videolan.org/libplacebo/package.yml

@@ -0,0 +1,55 @@
+distributable:
+  url: https://code.videolan.org/videolan/libplacebo/-/archive/v{{version}}/libplacebo-v{{version}}.tar.bz2
+  strip-components: 1
+versions:
+  gitlab: code.videolan.org:videolan/libplacebo/tags
+dependencies:
+  littlecms.com: ^2
+  github.com/KhronosGroup/Vulkan-Loader: ^1.3.272
+build:
+  dependencies:
+    mesonbuild.com: '*'
+    ninja-build.org: '*'
+    python.org: ^3.11
+    github.com/KhronosGroup/Vulkan-Headers: '*'
+    curl.se: '*'
+    linux:
+      # ERROR: Compiler c++ cannot compile programs.
+      gnu.org/gcc: '*'
+  script:
+    - run: curl -L "$fast_float" | tar xz --strip-components=1
+      working-directory: 3rdparty/fast_float
+    - run: curl -L "$glad" | tar xz --strip-components=1
+      working-directory: 3rdparty/glad
+    - run: curl -L "$jinja" | tar xz --strip-components=1
+      working-directory: 3rdparty/jinja
+    - run: curl -L "$markupsafe" | tar xz --strip-components=1
+      working-directory: 3rdparty/markupsafe
+    - meson setup build $MESON_ARGS
+    - meson compile -C build --verbose
+    - meson install -C build
+  env:
+    linux:
+      # undefined reference to `main'
+      # error: ld returned 1 exit status
+      LDFLAGS: -fPIC
+    fast_float: https://github.com/fastfloat/fast_float/archive/refs/tags/v5.2.0.tar.gz
+    glad: https://files.pythonhosted.org/packages/8b/b3/191508033476b6a409c070c6166b1c41ebb547cc6136260e9157343e6a2b/glad2-2.0.4.tar.gz
+    jinja: https://files.pythonhosted.org/packages/7a/ff/75c28576a1d900e87eb6335b063fab47a8ef3c8b4d88524c4bf78f670cce/Jinja2-3.1.2.tar.gz
+    markupsafe: https://files.pythonhosted.org/packages/6d/7c/59a3248f411813f8ccba92a55feaac4bf360d29e2ff05ee7d8e1ef2d7dbf/MarkupSafe-2.1.3.tar.gz
+    MESON_ARGS:
+      - --prefix="{{prefix}}"
+      - --libdir="{{prefix}}/lib"
+      - --buildtype=release
+      - --wrap-mode=nofallback
+      - -Dvulkan-registry="{{deps.github.com/KhronosGroup/Vulkan-Headers.prefix}}/share/vulkan/registry/vk.xml"
+test:
+  dependencies:
+    freedesktop.org/pkg-config: '*'
+    linux:
+      # GLIBCXX_3.4.29 not found
+      gnu.org/gcc: '*'
+  script:
+    - pkg-config --modversion libplacebo | grep {{version}}
+    - cc test.c -lplacebo -o test
+    - ./test

projects/videolan.org/libplacebo/test.c

@@ -0,0 +1,5 @@
+#include <libplacebo/config.h>
+#include <stdlib.h>
+int main() {
+    return (pl_version() != NULL) ? 0 : 1;
+}