rts: drop unused 'SpinLockCount' typedef
[ghc.git] / distrib / configure.ac.in
index ed91244..c7a8ead 100644 (file)
@@ -63,6 +63,65 @@ FIND_GCC([WhatGccIsCalled], [gcc], [gcc])
 CC="$WhatGccIsCalled"
 export CC
 
+
+dnl ** what cpp to use?
+dnl --------------------------------------------------------------
+AC_ARG_WITH(hs-cpp,
+[AC_HELP_STRING([--with-hs-cpp=ARG],
+        [Use ARG as the path to cpp [default=autodetect]])],
+[
+    if test "$HostOS" = "mingw32"
+    then
+        AC_MSG_WARN([Request to use $withval will be ignored])
+    else
+        HaskellCPPCmd=$withval
+    fi
+],
+[
+    if test "$HostOS" != "mingw32"
+    then
+        HaskellCPPCmd=$WhatGccIsCalled
+    fi
+]
+)
+
+
+
+dnl ** what cpp flags to use?
+dnl -----------------------------------------------------------
+AC_ARG_WITH(hs-cpp-flags,
+  [AC_HELP_STRING([--with-hs-cpp-flags=ARG],
+          [Use ARG as the path to hs cpp [default=autodetect]])],
+  [
+      if test "$HostOS" = "mingw32"
+      then
+          AC_MSG_WARN([Request to use $withval will be ignored])
+      else
+          HaskellCPPArgs=$withval
+      fi
+  ],
+[
+  $HaskellCPPCmd -x c /dev/null -dM -E > conftest.txt 2>&1
+  if grep "__clang__" conftest.txt >/dev/null 2>&1; then
+    HaskellCPPArgs="-E -undef -traditional -Wno-invalid-pp-token -Wno-unicode -Wno-trigraphs "
+  else
+      $HaskellCPPCmd  -v > conftest.txt 2>&1
+      if  grep "gcc" conftest.txt >/dev/null 2>&1; then
+          HaskellCPPArgs="-E -undef -traditional "
+        else
+          $HaskellCPPCmd  --version > conftest.txt 2>&1
+          if grep "cpphs" conftest.txt >/dev/null 2>&1; then
+            HaskellCPPArgs="--cpp -traditional"
+          else
+            AC_MSG_WARN([configure can't recognize your CPP program, you may need to set --with-hs-cpp-flags=FLAGS explicitly])
+            HaskellCPPArgs=""
+          fi
+      fi
+  fi
+  ]
+)
+
+
 dnl ** Which ld to use?
 dnl --------------------------------------------------------------
 FP_ARG_WITH_PATH_GNU_PROG([LD], [ld], [ld])