Create a link from $BUILD_OBJ_ROOT/lib/System/platform to

$BUILD_SRC_ROOT/lib/System/$build which gives us the ability to
configure the lib/System for the current type of operating system.
Also cleaned up some indentation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16082 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/autoconf/configure.ac b/autoconf/configure.ac
index 172be4c49241409b1f2f076d727dbb482cd9b6a4..55c4d7e37c5bb53a37bc94ff179fea4432316d90 100644 (file)
--- a/autoconf/configure.ac
+++ b/autoconf/configure.ac
@@ -102,31 +102,47 @@ dnl We will use the build machine information to set some variables.
 case $build in
        *-*-linux*)
              AC_SUBST(OS,[Linux])
-                        if test -d /home/vadve/lattner/local/x86/llvm-gcc
-                        then
-                          AC_SUBST(LLVMGCCDIR,[/home/vadve/lattner/local/x86/llvm-gcc/])
-                        fi
-                ;;
+             platform_type="Linux"
+             if test -d /home/vadve/lattner/local/x86/llvm-gcc
+            then
+              AC_SUBST(LLVMGCCDIR,[/home/vadve/lattner/local/x86/llvm-gcc/])
+             fi
+             ;;
        *-*-solaris*)
              AC_SUBST(OS,[SunOS])
-                        if test -d /home/vadve/lattner/local/sparc/llvm-gcc
-                        then
-                  AC_SUBST(LLVMGCCDIR,[/home/vadve/lattner/local/sparc/llvm-gcc/])
-                        fi
-                ;;
+             platform_type="SunOS"
+             if test -d /home/vadve/lattner/local/sparc/llvm-gcc
+             then
+               AC_SUBST(LLVMGCCDIR,[/home/vadve/lattner/local/sparc/llvm-gcc/])
+             fi
+             ;;
        *-*-cygwin*)
              AC_SUBST(OS,[Cygwin])
-                ;;
+             platform_type="Cygwin"
+             ;;
        *-*-darwin*)
              AC_SUBST(OS,[Darwin])
-                ;;
+             platform_type="Darwin"
+             ;;
        *-*-aix*)
              AC_SUBST(OS,[AIX])
-                ;;
-       *)       AC_SUBST(OS,[Unknown])
-                ;;
+             platform_type="AIX"
+             ;;
+        *-*-win32*)
+             AC_SUBST(OS,[Win32])
+             platform_type="Win32"
+            ;;
+       *)   
+             AC_SUBST(OS,[Unknown])
+             platform_type="Unknown"
+            ;;
 esac
 
+dnl Make a link from lib/System/platform to lib/System/$platform_type
+dnl This helps the #inclusion of the system specific include files
+dnl for the operating system abstraction library
+AC_CONFIG_LINKS(lib/System/platform:lib/System/$platform_type)
+
 dnl If we are targetting a Sparc machine running Solaris, pretend that it is
 dnl V9, since that is all that we support at the moment, and autoconf will only
 dnl tell us we're a sparc.