LinkerId: Identify AIX and SunOS system linkers

Populate `CMAKE_<LANG>_COMPILER_LINKER_{ID,VERSION}` on these platforms.

Help/variable/CMAKE_LANG_COMPILER_LINKER_ID.rst

@@ -19,6 +19,8 @@ Value                           Name
 ``MSVC``                        `Microsoft Visual Studio`_
 ``MOLD``                        `mold: A Modern Linker`_ or, on Apple, `sold`_
                                 linker
+``AIX``                         AIX system linker
+``Solaris``                     SunOS system linker
 =============================== ===============================================
 
 This variable is not guaranteed to be defined for all linkers or languages.

Modules/CMakeParseImplicitLinkInfo.cmake

@@ -75,7 +75,7 @@ function(cmake_parse_implicit_link_info2 text log_var obj_regex)
   set(linker_regex "^( *|.*[/\\])(${linker}|${startfile}|([^/\\]+-)?ld|collect2)[^/\\]*( |$)")
   set(linker_exclude_regex "collect2 version |^[A-Za-z0-9_]+=|/ldfe ")
   set(linker_tool_regex "^[ \t]*(->|exec:|\")?[ \t]*(.*[/\\](${linker}))(\"|,| |$)")
-  set(linker_tool_exclude_regex "cuda-fake-ld|-fuse-ld=")
+  set(linker_tool_exclude_regex "cuda-fake-ld|-fuse-ld=|--with-ld=")
   set(linker_tool "NOTFOUND")
   set(link_line_parsed 0)
   string(APPEND log "  link line regex: [${linker_regex}]\n")

Modules/Internal/CMakeDetermineLinkerId.cmake

@@ -26,6 +26,7 @@ function(cmake_determine_linker_id lang linker)
   # Compute the linker ID and version.
   foreach(flags IN ITEMS
       "-v"        # AppleClang, GNU, GNUgold, MOLD
+      "-V"        # AIX, Solaris
       "--version" # LLD
       )
     execute_process(COMMAND "${linker}" ${flags}
@@ -72,6 +73,14 @@ function(cmake_determine_linker_id lang linker)
       set(linker_frontend "MSVC")
       set(linker_version "${CMAKE_MATCH_1}")
       break()
+    elseif (CMAKE_SYSTEM_NAME STREQUAL "SunOS" AND linker_desc MATCHES "Solaris Link Editors: ([0-9.-]+)")
+      set(linker_id "Solaris")
+      set(linker_version "${CMAKE_MATCH_1}")
+      break()
+    elseif (CMAKE_SYSTEM_NAME STREQUAL "AIX" AND linker_desc MATCHES " LD ([0-9.]+)")
+      set(linker_id "AIX")
+      set(linker_version "${CMAKE_MATCH_1}")
+      break()
     endif()
   endforeach()
   if(NOT linker_id)

Modules/Platform/AIX-GNU.cmake

@@ -14,6 +14,7 @@ macro(__aix_compiler_gnu lang)
   string(APPEND CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS " -Wl,-bnoipath")
   set(CMAKE_SHARED_LIBRARY_LINK_${lang}_FLAGS "-Wl,-bexpall") # CMP0065 old behavior
   set(CMAKE_${lang}_USE_IMPLICIT_LINK_DIRECTORIES_IN_RUNTIME_PATH 1)
+  set(CMAKE_${lang}_VERBOSE_LINK_FLAG "-Wl,-v")
 
   set(CMAKE_${lang}_LINK_FLAGS "-Wl,-bnoipath")
   set(CMAKE_${lang}_LINK_LIBRARIES_PROCESSING ORDER=REVERSE UNICITY=ALL)