Gentoo install cholmod.h into /usr/include directly and uses PkgConfig
--- a/library/src/CMakeLists.txt
+++ b/library/src/CMakeLists.txt
@@ -153,14 +153,10 @@ if(NOT USE_CUDA)
       list(APPEND static_depends PACKAGE rocsparse)
     endif()
 
-    find_package(CHOLMOD QUIET)
-    if(NOT TARGET SuiteSparse::CHOLMOD)
-      # try again with the custom find modules for older versions of suitesparse
-      list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake/suitesparse)
-      find_package(CHOLMOD REQUIRED)
-    endif()
+    find_package(PkgConfig REQUIRED)
+    pkg_check_modules(CHOLMOD REQUIRED IMPORTED_TARGET cholmod)
 
-    target_link_libraries( hipsolver PRIVATE roc::rocsparse SuiteSparse::CHOLMOD)
+    target_link_libraries( hipsolver PRIVATE roc::rocsparse PkgConfig::CHOLMOD)
     set_source_files_properties(${hipsolver_source}
       PROPERTIES
         COMPILE_DEFINITIONS HAVE_ROCSPARSE
--- a/library/src/amd_detail/dlopen/cholmod.hpp
+++ b/library/src/amd_detail/dlopen/cholmod.hpp
@@ -24,7 +24,7 @@
 #include "lib_macros.hpp"
 
 #ifdef HAVE_ROCSPARSE
-#include <suitesparse/cholmod.h>
+#include <cholmod.h>
 #else
 
 // constants