From 3df49dc7b1517109ef198177f541e24bc61fefea Mon Sep 17 00:00:00 2001
From: Alex Neundorf <neundorf@kde.org>
Date: Sat, 1 Oct 2011 19:09:24 +0200
Subject: [PATCH] fix #12392: handle CMAKE_CXX_COMPILER_ARG1 for Eclipse
 projects

CMAKE_CXX/C_COMPILER_ARG1 have to be used for finding the include
dirs and builtin macros, so Eclipse can do code completion

Alex
---
 ...ratorDetermineCompilerMacrosAndIncludeDirs.cmake |  4 +++-
 Source/cmExtraEclipseCDT4Generator.cxx              | 13 +++++++++++--
 2 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/Modules/CMakeExtraGeneratorDetermineCompilerMacrosAndIncludeDirs.cmake b/Modules/CMakeExtraGeneratorDetermineCompilerMacrosAndIncludeDirs.cmake
index 55c37c209..1b4532deb 100644
--- a/Modules/CMakeExtraGeneratorDetermineCompilerMacrosAndIncludeDirs.cmake
+++ b/Modules/CMakeExtraGeneratorDetermineCompilerMacrosAndIncludeDirs.cmake
@@ -25,10 +25,12 @@ MACRO(_DETERMINE_GCC_SYSTEM_INCLUDE_DIRS _lang _resultIncludeDirs _resultDefines
 
   IF (${_lang} STREQUAL "c++")
     SET(_compilerExecutable "${CMAKE_CXX_COMPILER}")
+    SET(_arg1 "${CMAKE_CXX_COMPILER_ARG1}")
   ELSE ()
     SET(_compilerExecutable "${CMAKE_C_COMPILER}")
+    SET(_arg1 "${CMAKE_C_COMPILER_ARG1}")
   ENDIF ()
-  EXECUTE_PROCESS(COMMAND ${_compilerExecutable} -v -E -x ${_lang} -dD dummy
+  EXECUTE_PROCESS(COMMAND ${_compilerExecutable} ${_arg1} -v -E -x ${_lang} -dD dummy
                   WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/CMakeFiles
                   ERROR_VARIABLE _gccOutput
                   OUTPUT_VARIABLE _gccStdout )
diff --git a/Source/cmExtraEclipseCDT4Generator.cxx b/Source/cmExtraEclipseCDT4Generator.cxx
index 1dd9bf33d..7beffdcf2 100644
--- a/Source/cmExtraEclipseCDT4Generator.cxx
+++ b/Source/cmExtraEclipseCDT4Generator.cxx
@@ -987,17 +987,26 @@ void cmExtraEclipseCDT4Generator
   // we need the "make" and the C (or C++) compiler which are used, Alex
   std::string make = makefile.GetRequiredDefinition("CMAKE_MAKE_PROGRAM");
   std::string compiler = makefile.GetSafeDefinition("CMAKE_C_COMPILER");
+  std::string arg1 = makefile.GetSafeDefinition("CMAKE_C_COMPILER_ARG1");
   if (compiler.empty())
     {
     compiler = makefile.GetSafeDefinition("CMAKE_CXX_COMPILER");
+    arg1 = makefile.GetSafeDefinition("CMAKE_CXX_COMPILER_ARG1");
     }
   if (compiler.empty())  //Hmm, what to do now ?
     {
     compiler = "gcc";
     }
 
-
   // the following right now hardcodes gcc behaviour :-/
+  std::string compilerArgs =
+                         "-E -P -v -dD ${plugin_state_location}/${specs_file}";
+  if (!arg1.empty())
+    {
+    arg1 += " ";
+    compilerArgs = arg1 + compilerArgs;
+    }
+
   fout <<
     "<storageModule moduleId=\"scannerConfiguration\">\n"
     "<autodiscovery enabled=\"true\" problemReportingEnabled=\"true\""
@@ -1007,7 +1016,7 @@ void cmExtraEclipseCDT4Generator
   cmExtraEclipseCDT4Generator::AppendScannerProfile(fout,
     "org.eclipse.cdt.make.core.GCCStandardMakePerProjectProfile",
     true, "", true, "specsFile",
-    "-E -P -v -dD ${plugin_state_location}/${specs_file}",
+    compilerArgs,
     compiler, true, true);
   cmExtraEclipseCDT4Generator::AppendScannerProfile(fout,
     "org.eclipse.cdt.make.core.GCCStandardMakePerFileProfile",