From 0af3e428ecebb3a27a708b4228edd33ca36e13fb Mon Sep 17 00:00:00 2001
From: Doug A <douganderson444@gmail.com>
Date: Sat, 1 Feb 2025 18:05:52 -0400
Subject: [PATCH] fix: place `ug` dep behind `not wasm32` flag (#2760)

* place `ug` behind not wasm32 attr

so that wasm32 can compile

* mv `ug` to conditional target dep

assuming every non-wasm32 user wants this
---
 candle-core/Cargo.toml                  | 7 ++++---
 candle-core/src/cuda_backend/device.rs  | 1 +
 candle-core/src/custom_op.rs            | 1 +
 candle-core/src/error.rs                | 1 +
 candle-core/src/metal_backend/device.rs | 1 +
 5 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/candle-core/Cargo.toml b/candle-core/Cargo.toml
index 4ffc869ff8..d5d5bde00c 100644
--- a/candle-core/Cargo.toml
+++ b/candle-core/Cargo.toml
@@ -14,7 +14,7 @@ accelerate-src = { workspace = true, optional = true }
 byteorder = { workspace = true }
 candle-kernels = { workspace = true, optional = true }
 candle-metal-kernels = { workspace = true, optional = true }
-metal = { workspace = true, optional = true}
+metal = { workspace = true, optional = true }
 cudarc = { workspace = true, optional = true }
 gemm = { workspace = true }
 half = { workspace = true }
@@ -28,18 +28,19 @@ rand_distr = { workspace = true }
 rayon = { workspace = true }
 safetensors = { workspace = true }
 thiserror = { workspace = true }
-ug = { workspace = true }
 ug-cuda = { workspace = true, optional = true }
 ug-metal = { workspace = true, optional = true }
 yoke = { workspace = true }
 zip = { workspace = true }
 
+[target.'cfg(not(target_arch = "wasm32"))'.dependencies]
+ug = { workspace = true }
+
 [dev-dependencies]
 anyhow = { workspace = true }
 clap = { workspace = true }
 criterion = { workspace = true }
 
-
 [features]
 default = []
 cuda = ["cudarc", "dep:candle-kernels", "dep:ug-cuda"]
diff --git a/candle-core/src/cuda_backend/device.rs b/candle-core/src/cuda_backend/device.rs
index d3bd29030e..b9ab434925 100644
--- a/candle-core/src/cuda_backend/device.rs
+++ b/candle-core/src/cuda_backend/device.rs
@@ -51,6 +51,7 @@ impl CudaDevice {
         self.device.clone()
     }
 
+    #[cfg(not(target_arch = "wasm32"))]
     pub fn compile(
         &self,
         func_name: &'static str,
diff --git a/candle-core/src/custom_op.rs b/candle-core/src/custom_op.rs
index c0d97d670a..18d4786eae 100644
--- a/candle-core/src/custom_op.rs
+++ b/candle-core/src/custom_op.rs
@@ -386,6 +386,7 @@ pub struct UgIOp1 {
 
 impl UgIOp1 {
     #[allow(unused)]
+    #[cfg(not(target_arch = "wasm32"))]
     pub fn new(
         name: &'static str,
         kernel: ug::lang::ssa::Kernel,
diff --git a/candle-core/src/error.rs b/candle-core/src/error.rs
index 85a9d23018..5729013be3 100644
--- a/candle-core/src/error.rs
+++ b/candle-core/src/error.rs
@@ -172,6 +172,7 @@ pub enum Error {
     #[error("Metal error {0}")]
     Metal(#[from] MetalError),
 
+    #[cfg(not(target_arch = "wasm32"))]
     #[error(transparent)]
     Ug(#[from] ug::Error),
 
diff --git a/candle-core/src/metal_backend/device.rs b/candle-core/src/metal_backend/device.rs
index fab80d34ec..25523a40c6 100644
--- a/candle-core/src/metal_backend/device.rs
+++ b/candle-core/src/metal_backend/device.rs
@@ -138,6 +138,7 @@ impl std::ops::Deref for MetalDevice {
 }
 
 impl MetalDevice {
+    #[cfg(not(target_arch = "wasm32"))]
     pub fn compile(
         &self,
         func_name: &'static str,