From 791df21798b80428bbdb464ffb592f5614f08087 Mon Sep 17 00:00:00 2001
From: Agnes Leroy <agnes.leroy@zama.ai>
Date: Fri, 17 Mar 2023 15:24:33 +0100
Subject: [PATCH] chore(gpu): avoid building concrete-cpu if the target already
 exists

---
 .../implementation/test/CMakeLists.txt        | 32 ++++++++++---------
 1 file changed, 17 insertions(+), 15 deletions(-)

diff --git a/backends/concrete-cuda/implementation/test/CMakeLists.txt b/backends/concrete-cuda/implementation/test/CMakeLists.txt
index 3d1a9b67b..e5cc6c55b 100644
--- a/backends/concrete-cuda/implementation/test/CMakeLists.txt
+++ b/backends/concrete-cuda/implementation/test/CMakeLists.txt
@@ -7,24 +7,26 @@ set(gtest_force_shared_crt
     CACHE BOOL "" FORCE)
 FetchContent_MakeAvailable(googletest)
 
-# Enable ExternalProject CMake module
-include(ExternalProject)
-
 set(CONCRETE_CPU_BINARY_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../../../concrete-cpu/target/release")
 set(CONCRETE_CPU_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../../../concrete-cpu")
 
-# Add rust_example as a CMake target
-ExternalProject_Add(
-  concrete_cpu
-  SOURCE_DIR ${CONCRETE_CPU_SOURCE_DIR}
-  DOWNLOAD_COMMAND ""
-  CONFIGURE_COMMAND ""
-  BUILD_COMMAND cargo build --release
-  COMMAND cargo build --release
-  BINARY_DIR ${CONCRETE_CPU_BINARY_DIR}
-  BUILD_ALWAYS true
-  INSTALL_COMMAND ""
-  LOG_BUILD ON)
+if(NOT TARGET concrete_cpu)
+  # Enable ExternalProject CMake module
+  include(ExternalProject)
+
+  # Add rust_example as a CMake target
+  ExternalProject_Add(
+    concrete_cpu
+    SOURCE_DIR ${CONCRETE_CPU_SOURCE_DIR}
+    DOWNLOAD_COMMAND ""
+    CONFIGURE_COMMAND ""
+    BUILD_COMMAND cargo build --release
+    COMMAND cargo build --release
+    BINARY_DIR ${CONCRETE_CPU_BINARY_DIR}
+    BUILD_ALWAYS true
+    INSTALL_COMMAND ""
+    LOG_BUILD ON)
+endif()
 
 include_directories(${CONCRETE_CPU_SOURCE_DIR}/include)
 add_library(concrete_cpu_lib STATIC IMPORTED)