From 22d2be00dc2289037144abeffab7a5526a8014ea Mon Sep 17 00:00:00 2001
From: Tom Rix <Tom.Rix@amd.com>
Date: Thu, 30 Oct 2025 11:27:03 -0700
Subject: [PATCH] rocsolver ninja job pools

---
 CMakeLists.txt | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 32757570f70f..003b37f98fc5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -125,6 +125,32 @@ option(BUILD_SHARED_LIBS "Build rocSOLVER as a shared library" ON)
 include(util)
 include(CheckLanguage)
 include(CMakeDependentOption)
+#
+# Seperate linking jobs from compiling
+# Too many concurrent linking jobs can break the build
+# Copied from LLVM
+set(ROCSOLVER_PARALLEL_LINK_JOBS "" CACHE STRING
+  "Define the maximum number of concurrent link jobs (Ninja only).")
+if(CMAKE_GENERATOR MATCHES "Ninja")
+  if(ROCSOLVER_PARALLEL_LINK_JOBS)
+    set_property(GLOBAL APPEND PROPERTY JOB_POOLS link_job_pool=${ROCSOLVER_PARALLEL_LINK_JOBS})
+    set(CMAKE_JOB_POOL_LINK link_job_pool)
+  endif()
+elseif(ROCSOLVER_PARALLEL_LINK_JOBS)
+  message(WARNING "Job pooling is only available with Ninja generators.")
+endif()
+# Similar for compiling
+set(ROCSOLVER_PARALLEL_COMPILE_JOBS "" CACHE STRING
+  "Define the maximum number of concurrent compile jobs (Ninja only).")
+if(CMAKE_GENERATOR MATCHES "Ninja")
+  if(ROCSOLVER_PARALLEL_COMPILE_JOBS)
+    set_property(GLOBAL APPEND PROPERTY JOB_POOLS compile_job_pool=${ROCSOLVER_PARALLEL_COMPILE_JOBS})
+    set(CMAKE_JOB_POOL_COMPILE compile_job_pool)
+  endif()
+elseif(ROCSOLVER_PARALLEL_COMPILE_JOBS)
+  message(WARNING "Job pooling is only available with Ninja generators.")
+endif()
+
 include(CheckCXXCompilerFlag)
 
 option(BUILD_TESTING "Build rocSOLVER tests" OFF)
-- 
2.51.0