ParseImplicitIncludeInfo: handle/add SunPro, XL, and -nostdinc test cases

Add parser code for compiler IDs SunPro and XL.  For SunPro, /usr/include
appears to be hardwired in and it does not have a -nostdinc-type flag.

For XL, the "xlc" and "xlC" commands determine if you are C or C++
based on input filename.  So compiling x.c with "xlC" reverts to C
and compiling x.cc with "xlc" upgrades to CXX.  System include paths
are specified by:
  -qc_stdinc=[path] and -qgcc_c_stdinc=[path] (for C)
  -qcpp_stdinc=[path] and -qgcc_cpp_stdinc=[path] (for CXX)
If you specify "-qnostdinc" then the above flags are ignored.
Specifying an empty path reverts the value to the default
path (e.g. "-qgcc_c_stdinc=" reverts that to the default).

Adjust the code to handle parsing the case where the user specifies
additional compiler include flags via CMAKE_C_FLAGS/CMAKE_CXX_FLAGS.
For example: "-DCMAKE_C_FLAGS=-nostdinc" ... note that gcc and clang
output slightly differ when -nostdinc is specified (clang skips
printing 'search starts here:' with the angle brackets, gcc always
prints it).

Enable sunos-{C,CXX}-SunPro test cases and add XL test cases.
Also add a few -nostdinc style tests.

1 files changed, 90 insertions, 11 deletions

diff --git a/Modules/CMakeParseImplicitIncludeInfo.cmake b/Modules/CMakeParseImplicitIncludeInfo.cmake
index 9901fea..6603e1c 100644
--- a/Modules/CMakeParseImplicitIncludeInfo.cmake
+++ b/Modules/CMakeParseImplicitIncludeInfo.cmake
@@ -11,8 +11,9 @@ function(cmake_parse_implicit_include_line line lang id_var log_var state_var)
   unset(rv)
   set(log "")
 
-  # ccfe: cray compiler front end (PrgEnv-cray)
+  # Cray compiler (from cray wrapper, via PrgEnv-cray)
   if("${CMAKE_${lang}_COMPILER_ID}" STREQUAL "Cray" AND
+     "${line}" MATCHES "^/" AND "${line}" MATCHES "/ccfe " AND
      "${line}" MATCHES "-isystem")
     string(REGEX MATCHALL " (-I ?|-isystem )([^ ]*)" incs "${line}")
     foreach(inc IN LISTS incs)
@@ -26,10 +27,78 @@ function(cmake_parse_implicit_include_line line lang id_var log_var state_var)
     endif()
   endif()
 
+  # SunPro compiler
+  if("${CMAKE_${lang}_COMPILER_ID}" STREQUAL "SunPro" AND
+     "${line}" MATCHES "-D__SUNPRO_C")
+    string(REGEX MATCHALL " (-I ?)([^ ]*)" incs "${line}")
+    foreach(inc IN LISTS incs)
+      string(REGEX REPLACE " (-I ?)([^ ]*)" "\\2" idir "${inc}")
+      if(NOT "${idir}" STREQUAL "-xbuiltin")
+        list(APPEND rv "${idir}")
+      endif()
+    endforeach()
+    if(rv)
+      # /usr/include appears to be hardwired in
+      list(APPEND rv "/usr/include")
+      string(APPEND log "  got implicit includes via sunpro parser!\n")
+    else()
+      string(APPEND log "  warning: sunpro parse failed!\n")
+    endif()
+  endif()
+
+  # XL C/CXX compiler
+  if("${CMAKE_${lang}_COMPILER_ID}" STREQUAL "XL" AND
+     "${line}" MATCHES "^/" AND "${line}" MATCHES "/xlcentry |/xlCentry " AND
+     "${line}" MATCHES " -qosvar=")
+    # -qnostdinc cancels other stdinc flags, even if present
+    string(FIND "${line}" " -qnostdinc" nostd)
+    if(NOT ${nostd} EQUAL -1)
+      set(rv "")    # defined but empty
+      string(APPEND log "  got implicit includes via XL parser (nostdinc)\n")
+    else()
+      if("${lang}" STREQUAL "CXX")
+        string(REGEX MATCHALL " -qcpp_stdinc=([^ ]*)" std "${line}")
+        string(REGEX MATCHALL " -qgcc_cpp_stdinc=([^ ]*)" gcc_std "${line}")
+      else()
+        string(REGEX MATCHALL " -qc_stdinc=([^ ]*)" std "${line}")
+        string(REGEX MATCHALL " -qgcc_c_stdinc=([^ ]*)" gcc_std "${line}")
+      endif()
+      set(xlstd ${std} ${gcc_std})
+      foreach(inc IN LISTS xlstd)
+        string(REGEX REPLACE " -q(cpp|gcc_cpp|c|gcc_c)_stdinc=([^ ]*)" "\\2"
+               ipath "${inc}")
+        string(REPLACE ":" ";" ipath "${ipath}")
+        list(APPEND rv ${ipath})
+      endforeach()
+    endif()
+    # user can add -I flags via CMAKE_{C,CXX}_FLAGS, look for that too
+    string(REGEX MATCHALL " (-I ?)([^ ]*)" incs "${line}")
+    unset(urv)
+    foreach(inc IN LISTS incs)
+      string(REGEX REPLACE " (-I ?)([^ ]*)" "\\2" idir "${inc}")
+      list(APPEND urv "${idir}")
+    endforeach()
+    if(urv)
+      if ("${rv}" STREQUAL "")
+        set(rv ${urv})
+      else()
+        list(APPEND rv ${urv})
+      endif()
+    endif()
+
+    if(DEFINED rv)
+      string(APPEND log "  got implicit includes via XL parser!\n")
+    else()
+      string(APPEND log "  warning: XL parse failed!\n")
+    endif()
+  endif()
+
   if(log)
     set(${log_var} "${log}" PARENT_SCOPE)
+  else()
+    unset(${log_var} PARENT_SCOPE)
   endif()
-  if(rv)
+  if(DEFINED rv)
     set(${id_var} "${rv}" PARENT_SCOPE)
     set(${state_var} "done" PARENT_SCOPE)
   endif()
@@ -48,10 +117,11 @@ function(cmake_parse_implicit_include_info text lang dir_var log_var state_var)
   string(REGEX REPLACE "\r?\n" ";" output_lines "${text}")
   foreach(line IN LISTS output_lines)
     if(state STREQUAL start)
-      string(FIND "${line}" "#include <...> search starts here:" rv)
+      string(FIND "${line}" "#include \"...\" search starts here:" rv)
       if(rv GREATER -1)
         set(state loading)
-        string(APPEND log "  found start of implicit include info\n")
+        set(preload 1)      # looking for include <...> now
+        string(APPEND log "  found start of include info\n")
       else()
         cmake_parse_implicit_include_line("${line}" "${lang}" implicit_dirs_tmp
                                           linelog state)
@@ -68,15 +138,24 @@ function(cmake_parse_implicit_include_info text lang dir_var log_var state_var)
         set(state done)
         string(APPEND log "  end of search list found\n")
         break()
-      else()
-        string(STRIP "${line}" path)     # remove leading/trailing spaces
-        if ("${path}" MATCHES " \\(framework directory\\)$")
-          continue() # frameworks are handled elsewhere, ignore them here
+      endif()
+      if(preload)
+        string(FIND "${line}" "#include <...> search starts here:" rv)
+        if(rv GREATER -1)
+          set(preload 0)
+          string(APPEND log "  found start of implicit include info\n")
         endif()
-        string(REPLACE "\\" "/" path "${path}")
-        list(APPEND implicit_dirs_tmp "${path}")
-        string(APPEND log "    add: [${path}]\n")
+        continue()
+      endif()
+      if("${line}" MATCHES "^ ")
+        string(SUBSTRING "${line}" 1 -1 line)  # remove leading space
+      endif()
+      if ("${line}" MATCHES " \\(framework directory\\)$")
+        continue() # frameworks are handled elsewhere, ignore them here
       endif()
+      string(REPLACE "\\" "/" path "${line}")
+      list(APPEND implicit_dirs_tmp "${path}")
+      string(APPEND log "    add: [${path}]\n")
     endif()
   endforeach()