sci-libs/torchaudio: Fix CUDA 12.5 build

See pytorch/audio#3811

Signed-off-by: wangjiezhe <wangjiezhe@gmail.com>

sci-libs/torchaudio/files/torchaudio-2.5.0-Fix-CUDA-12.5-build.patch

@@ -0,0 +1,24 @@
+From 7797f83e1d66ff78872763e1da3a5fb2f0534c40 Mon Sep 17 00:00:00 2001
+From: Markus Hennerbichler <markushennerbichler@gmail.com>
+Date: Mon, 15 Jul 2024 14:07:13 +0100
+Subject: [PATCH] Fix CUDA 12.5 build
+
+CUDA 12.5 removed the FLT_MAX symbol.
+This was previously used without being explicitly imported.
+FLT_MAX is defined in <float.h>, including this header fixes the issue
+---
+ src/libtorchaudio/cuctc/src/ctc_prefix_decoder_kernel_v2.cu | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/src/libtorchaudio/cuctc/src/ctc_prefix_decoder_kernel_v2.cu b/src/libtorchaudio/cuctc/src/ctc_prefix_decoder_kernel_v2.cu
+index 4ca8f1bf24..e6192155a2 100644
+--- a/src/libtorchaudio/cuctc/src/ctc_prefix_decoder_kernel_v2.cu
++++ b/src/libtorchaudio/cuctc/src/ctc_prefix_decoder_kernel_v2.cu
+@@ -24,6 +24,7 @@
+ // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ #include <algorithm>
++#include <float.h>
+ #include "ctc_fast_divmod.cuh"
+ #include "cub/cub.cuh"
+ #include "device_data_wrap.h"

sci-libs/torchaudio/torchaudio-2.5.0.ebuild

@@ -1,4 +1,4 @@
-# Copyright 2023-2024 Gentoo Authors
+# Copyright 2023-2025 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -29,6 +29,10 @@ RDEPEND="
 "
 DEPEND="${RDEPEND}"
 
+PATCHES=(
+	"${FILESDIR}"/${P}-Fix-CUDA-12.5-build.patch
+)
+
 src_prepare() {
 	export USE_FFMPEG=$(usex ffmpeg)
 	export FFMPEG_ROOT="/usr"