merged patched VPR-CMakefile

include/CMAKE_fix/PATCHED_VPR/CMakeLists.txt

@@ -99,15 +99,26 @@ add_library(libvpr STATIC
 target_include_directories(libvpr PUBLIC ${LIB_INCLUDE_DIRS})
 target_include_directories(libvpr PUBLIC ${READ_EDIF_SRC_DIR})
 
+# Find if Eigen is installed. Eigen is used within the Analytical Solver of the
+# Analytical Placement flow. If Eigen is not installed, certain solvers cannot
+# be used.
+find_package(Eigen3 3.3 NO_MODULE)
+if (TARGET Eigen3::Eigen)
+    target_link_libraries (libvpr Eigen3::Eigen)
+    target_compile_definitions(libvpr PUBLIC -DEIGEN_INSTALLED)
+    message(STATUS "Eigen3: Found")
+else ()
+    message(STATUS "Eigen3: Not Found. Some features may be disabled.")
+endif (TARGET Eigen3::Eigen)
+
 #VPR_ANALYTIC_PLACE is initialized in the root CMakeLists
-#Check Eigen dependency
+# NOTE: This is the cluster-level Analytical Placement which existed before the
+#       flat Analytical Placement flow.
 if(${VPR_ANALYTIC_PLACE})
 	message(STATUS "VPR Analytic Placement: Requested")
-	find_package(Eigen3 3.3 NO_MODULE)
 	if (TARGET Eigen3::Eigen)
 		message(STATUS "VPR Analytic Placement dependency (Eigen3): Found")
 		message(STATUS "VPR Analytic Placement: Enabled")
-		target_link_libraries (libvpr Eigen3::Eigen)
 		target_compile_definitions(libvpr PUBLIC -DENABLE_ANALYTIC_PLACE)
 	else ()
 		message(STATUS "VPR Analytic Placement dependency (Eigen3): Not Found (Download manually with sudo apt install libeigen3-dev, and rebuild)")
@@ -132,19 +143,21 @@ endif ()
 set_target_properties(libvpr PROPERTIES PREFIX "") #Avoid extra 'lib' prefix
 
 #Specify link-time dependencies
+find_package(ZLIB)
 target_link_libraries(libvpr
-                        libvtrutil
-                        libarchfpga
-                        libsdcparse
-                        libblifparse
-                        libtatum
-                        libargparse
-                        libpugixml
-                        librrgraph
-                        libreadedif
-                        ${OPENSSL_LIBRARIES}
-                        ${VERIFIC_LIBS} dl
-)
+                      libvtrutil
+                      libarchfpga
+                      libsdcparse
+                      libblifparse
+                      libtatum
+                      libargparse
+                      libpugixml
+                      librrgraph
+                      libreadedif
+                      ${OPENSSL_LIBRARIES}
+                      ${VERIFIC_LIBS}
+                      ZLIB::ZLIB dl
+    )
 
 if(VPR_USE_SERVER)
     target_link_libraries(libvpr
@@ -330,7 +343,7 @@ file(GLOB_RECURSE TEST_SOURCES test/*.cpp)
 add_executable(test_vpr ${TEST_SOURCES})
 target_link_libraries(test_vpr
                         Catch2::Catch2WithMain
-                        libvpr)
+                        libvpr -lz)
 
 #Suppress IPO link warnings if IPO is enabled
 get_target_property(TEST_VPR_USES_IPO vpr INTERPROCEDURAL_OPTIMIZATION)