From a434bd558f408b2b3b7c5a0345a82dd884e433fd Mon Sep 17 00:00:00 2001
From: Alessandro Barbieri <lssndrbarbieri@gmail.com>
Date: Fri, 27 May 2022 00:58:24 +0200
Subject: [PATCH] dev-cpp/vexcl: move backend use expand to profiles/desc

Signed-off-by: Alessandro Barbieri <lssndrbarbieri@gmail.com>
---
 dev-cpp/vexcl/metadata.xml          |  4 ----
 dev-cpp/vexcl/vexcl-1.4.3-r1.ebuild | 20 ++++++++++----------
 profiles/desc/backend.desc          |  9 +++++++++
 3 files changed, 19 insertions(+), 14 deletions(-)
 create mode 100644 profiles/desc/backend.desc

diff --git a/dev-cpp/vexcl/metadata.xml b/dev-cpp/vexcl/metadata.xml
index 7f8e3b02b9..ef42cd3ea6 100644
--- a/dev-cpp/vexcl/metadata.xml
+++ b/dev-cpp/vexcl/metadata.xml
@@ -17,9 +17,5 @@
 	<use>
 		<flag name="amdsi">Implement workaround for AMD SI GPUs</flag>
 		<!--<flag name="clogs">Use clogs algorithms</flag>-->
-		<flag name="backend-compute">Use Boost.Compute algorithms</flag>
-		<!--<flag name="backend-cuda">Use CUDA as backend</flag>-->
-		<flag name="backend-jit">Use the JIT backend</flag>
-		<flag name="backend-opencl">Use OpenCL as backend</flag>
 	</use>
 </pkgmetadata>
diff --git a/dev-cpp/vexcl/vexcl-1.4.3-r1.ebuild b/dev-cpp/vexcl/vexcl-1.4.3-r1.ebuild
index 3a30be60ea..4d03273cb5 100644
--- a/dev-cpp/vexcl/vexcl-1.4.3-r1.ebuild
+++ b/dev-cpp/vexcl/vexcl-1.4.3-r1.ebuild
@@ -21,18 +21,18 @@ LICENSE="MIT"
 SLOT="0"
 KEYWORDS="~amd64"
 IUSE_BACKEND="
-	backend-compute
-	backend-jit
-	+backend-opencl
+	backend_compute
+	backend_jit
+	+backend_opencl
 "
-#	backend-cuda
+#	backend_cuda
 IUSE="${IUSE_BACKEND} amdsi examples test" #clogs
 
 RDEPEND="
 	dev-libs/boost:=
 	dev-libs/clhpp
-	backend-jit? ( virtual/opencl )
-	backend-opencl? ( virtual/opencl )
+	backend_jit? ( virtual/opencl )
+	backend_opencl? ( virtual/opencl )
 "
 DEPEND="${RDEPEND}"
 
@@ -47,10 +47,10 @@ src_prepare() {
 src_configure() {
 	local backend
 #	use  && backend="All"
-	use backend-compute && backend="Compute"
-#	use backend-cuda && backend="CUDA"
-	use backend-jit && backend="JIT"
-	use backend-opencl && backend="OpenCL"
+	use backend_compute && backend="Compute"
+#	use backend_cuda && backend="CUDA"
+	use backend_jit && backend="JIT"
+	use backend_opencl && backend="OpenCL"
 
 	local mycmakeargs=(
 		-DBoost_USE_STATIC_LIBS=OFF
diff --git a/profiles/desc/backend.desc b/profiles/desc/backend.desc
new file mode 100644
index 0000000000..8a708023b2
--- /dev/null
+++ b/profiles/desc/backend.desc
@@ -0,0 +1,9 @@
+# Copyright 2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+# This file contains descriptions of BACKEND USE_EXPAND flags.
+
+compute - Use Boost.Compute algorithms
+cuda - Use CUDA as backend
+jit - Use the JIT backend
+opencl - Use OpenCL as backend