Improve handling of generator expressions when getting the flags for hip (#1055) (#1063)

Improve handling of generator expressions when getting the flags for hip
Authored-by: Paul Fultz II <pfultz2@yahoo.com>

cmake/TargetFlags.cmake

 
+function(eval_and_strip_genex OUTPUT_VAR INPUT)
+    string(REPLACE "$<LINK_LANGUAGE:CXX>" "1" INPUT "${INPUT}")
+    string(REPLACE "$<COMPILE_LANGUAGE:CXX>" "1" INPUT "${INPUT}")
+    string(REPLACE "SHELL:" "" INPUT "${INPUT}")
+    string(REPLACE "$<BOOL:>" "0" INPUT "${INPUT}")
+    string(REGEX REPLACE "\\$<BOOL:(0|FALSE|false|OFF|off|N|n|IGNORE|ignore|NOTFOUND|notfound)>" "0" INPUT "${INPUT}")
+    string(REGEX REPLACE "\\$<BOOL:[^<>]*-NOTFOUND>" "0" INPUT "${INPUT}")
+    string(REGEX REPLACE "\\$<BOOL:[^$<>]*>" "1" INPUT "${INPUT}")
+    string(REPLACE "$<NOT:0>" "1" INPUT "${INPUT}")
+    string(REPLACE "$<NOT:1>" "0" INPUT "${INPUT}")
+    string(REGEX REPLACE "\\$<0:[^<>]*>" "" INPUT "${INPUT}")
+    string(REGEX REPLACE "\\$<1:([^<>]*)>" "\\1" INPUT "${INPUT}")
+    string(GENEX_STRIP "${INPUT}" INPUT)
+    set(${OUTPUT_VAR} "${INPUT}" PARENT_SCOPE)
+endfunction()
+
 function(get_target_property2 VAR TARGET PROPERTY)
     get_target_property(_pflags ${TARGET} ${PROPERTY})
     if(_pflags)
+        eval_and_strip_genex(_pflags "${_pflags}")
         set(${VAR} ${_pflags} PARENT_SCOPE)
     else()
         set(${VAR} "" PARENT_SCOPE)
     endif()
 endfunction()
 
+function(flags_requires_arg OUTPUT_VAR FLAG)
+    set(_args -x -isystem)
+    if(FLAG IN_LIST _args)
+        set(${OUTPUT_VAR} 1 PARENT_SCOPE)
+    else()
+        set(${OUTPUT_VAR} 0 PARENT_SCOPE)
+    endif()
+endfunction()
 
 macro(append_flags FLAGS TARGET PROPERTY PREFIX)
     get_target_property2(_pflags ${TARGET} ${PROPERTY})
+    set(_requires_arg 0)
     foreach(FLAG ${_pflags})
-        if(TARGET ${FLAG})
-            target_flags(_pflags2 ${FLAG})
-            string(APPEND ${FLAGS} " ${_pflags2}")
-        else()
-            string(APPEND ${FLAGS} " ${PREFIX}${FLAG}")
+        string(STRIP "${FLAG}" FLAG)
+        if(FLAG)
+            if(TARGET ${FLAG} AND NOT _requires_arg)
+                target_flags(_pflags2 ${FLAG})
+                string(APPEND ${FLAGS} " ${_pflags2}")
+            else()
+                string(APPEND ${FLAGS} " ${PREFIX}${FLAG}")
+            endif()
+            flags_requires_arg(_requires_arg "${FLAG}")
         endif()
     endforeach()
 endmacro()
 
 macro(append_link_flags FLAGS TARGET PROPERTY)
     get_target_property2(_pflags ${TARGET} ${PROPERTY})
+    set(_requires_arg 0)
     foreach(FLAG ${_pflags})
-        if(TARGET ${FLAG})
-            target_flags(_pflags2 ${FLAG})
-            string(APPEND ${FLAGS} " ${_pflags2}")
-        elseif(FLAG MATCHES "^-.*")
-            string(APPEND ${FLAGS} " ${FLAG}")
-        elseif(EXISTS ${FLAG})
-            string(APPEND ${FLAGS} " ${FLAG}")
-        else()
-            string(APPEND ${FLAGS} " -l${FLAG}")
+        string(STRIP "${FLAG}" FLAG)
+        if(FLAG)
+            if(TARGET ${FLAG} AND NOT _requires_arg)
+                target_flags(_pflags2 ${FLAG})
+                string(APPEND ${FLAGS} " ${_pflags2}")
+            elseif(FLAG MATCHES "^-.*")
+                string(APPEND ${FLAGS} " ${FLAG}")
+            elseif(EXISTS ${FLAG})
+                string(APPEND ${FLAGS} " ${FLAG}")
+            else()
+                string(APPEND ${FLAGS} " -l${FLAG}")
+            endif()
+            flags_requires_arg(_requires_arg "${FLAG}")
         endif()
     endforeach()
 endmacro()

src/targets/gpu/CMakeLists.txt

@@ -316,8 +316,12 @@ target_flags(HIP_COMPILER_FLAGS hip::device)
 # Remove cuda arch flags
 string(REGEX REPLACE --cuda-gpu-arch=[a-z0-9]+ "" HIP_COMPILER_FLAGS "${HIP_COMPILER_FLAGS}")
 string(REGEX REPLACE --offload-arch=[a-z0-9:+-]+ "" HIP_COMPILER_FLAGS "${HIP_COMPILER_FLAGS}")
-string(REPLACE "$<LINK_LANGUAGE:CXX>" "1" HIP_COMPILER_FLAGS "${HIP_COMPILER_FLAGS}")
-string(REPLACE "SHELL:" "" HIP_COMPILER_FLAGS "${HIP_COMPILER_FLAGS}")
+# Skip library paths since hip will incorrectly treat it as a source file
+string(APPEND HIP_COMPILER_FLAGS " ")
+foreach(_unused RANGE 2)
+    string(REGEX REPLACE " /[^ ]+\\.(a|so) " " " HIP_COMPILER_FLAGS "${HIP_COMPILER_FLAGS}")
+endforeach()
+
 message(STATUS "Hip compiler flags: ${HIP_COMPILER_FLAGS}")
 target_compile_definitions(migraphx_gpu PRIVATE 
     "-DMIGRAPHX_HIP_COMPILER=${CMAKE_CXX_COMPILER}"