diff --git a/compiler/ccgexprs.nim b/compiler/ccgexprs.nim
index 7a0face5e5..5b04111b36 100755
--- a/compiler/ccgexprs.nim
+++ b/compiler/ccgexprs.nim
@@ -881,10 +881,15 @@ proc genSeqElemAppend(p: BProc, e: PNode, d: var TLoc) =
   # seq &= x  -->
   #    seq = (typeof seq) incrSeq(&seq->Sup, sizeof(x));
   #    seq->data[seq->len-1] = x;
+  let seqAppendPattern = if gCmd != cmdCompileToCpp:
+      "$1 = ($2) #incrSeq(&($1)->Sup, sizeof($3));$n"
+    else:
+      "$1 = ($2) #incrSeq($1, sizeof($3));$n"
+
   var a, b, dest: TLoc
   InitLocExpr(p, e.sons[1], a)
   InitLocExpr(p, e.sons[2], b)
-  appcg(p, cpsStmts, "$1 = ($2) #incrSeq(&($1)->Sup, sizeof($3));$n", [
+  appcg(p, cpsStmts, seqAppendPattern, [
       rdLoc(a),
       getTypeDesc(p.module, skipTypes(e.sons[1].typ, abstractVar)),
       getTypeDesc(p.module, skipTypes(e.sons[2].Typ, abstractVar))])
@@ -1114,8 +1119,12 @@ proc genSetLengthSeq(p: BProc, e: PNode, d: var TLoc) =
   InitLocExpr(p, e.sons[1], a)
   InitLocExpr(p, e.sons[2], b)
   var t = skipTypes(e.sons[1].typ, abstractVar)
-  appcg(p, cpsStmts, 
-      "$1 = ($3) #setLengthSeq(&($1)->Sup, sizeof($4), $2);$n", [
+  let setLenPattern = if gCmd != cmdCompileToCpp:
+      "$1 = ($3) #setLengthSeq(&($1)->Sup, sizeof($4), $2);$n"
+    else:
+      "$1 = ($3) #setLengthSeq($1, sizeof($4), $2);$n"
+
+  appcg(p, cpsStmts, setLenPattern, [
       rdLoc(a), rdLoc(b), getTypeDesc(p.module, t),
       getTypeDesc(p.module, t.sons[0])])
   keepAlive(p, a)
diff --git a/compiler/ccgstmts.nim b/compiler/ccgstmts.nim
index 0e85f2c2cd..eb4fd7a345 100755
--- a/compiler/ccgstmts.nim
+++ b/compiler/ccgstmts.nim
@@ -556,13 +556,14 @@ proc genTryStmtCpp(p: BProc, t: PNode) =
     i, length, blen: int
   genLineDir(p, t)
   exc = getTempName()
-  if optStackTrace in p.Options:
-    appcg(p, cpsStmts, "#setFrame((TFrame*)&F);$n")
+  discard cgsym(p.module, "E_Base")
   add(p.nestedTryStmts, t)
   startBlock(p, "try {$n")
   genStmts(p, t.sons[0])
   length = sonsLen(t)
   endBlock(p, ropecg(p.module, "} catch (NimException& $1) {$n", [exc]))
+  if optStackTrace in p.Options:
+    appcg(p, cpsStmts, "#setFrame((TFrame*)&F);$n")
   inc p.inExceptBlock
   i = 1
   var catchAllPresent = false
@@ -581,7 +582,6 @@ proc genTryStmtCpp(p: BProc, t: PNode) =
         appcg(p.module, orExpr,
               "#isObj($1.exp->m_type, $2)",
               [exc, genTypeInfo(p.module, t.sons[i].sons[j].typ)])
-      if i > 1: app(p.s(cpsStmts), "else ")
       appf(p.s(cpsStmts), "if ($1) ", [orExpr])
       genSimpleBlock(p, t.sons[i].sons[blen-1])
     inc(i)
@@ -639,13 +639,13 @@ proc genTryStmt(p: BProc, t: PNode) =
   appcg(p, cpsLocals, "#TSafePoint $1;$n", [safePoint])
   appcg(p, cpsStmts, "#pushSafePoint(&$1);$n" &
                      "$1.status = setjmp($1.context);$n", [safePoint])
-  if optStackTrace in p.Options: 
-    appcg(p, cpsStmts, "#setFrame((TFrame*)&F);$n")
   startBlock(p, "if ($1.status == 0) {$n", [safePoint])
   var length = sonsLen(t)
   add(p.nestedTryStmts, t)
   genStmts(p, t.sons[0])
   endBlock(p, ropecg(p.module, "#popSafePoint();$n } else {$n#popSafePoint();$n"))
+  if optStackTrace in p.Options: 
+    appcg(p, cpsStmts, "#setFrame((TFrame*)&F);$n")
   inc p.inExceptBlock
   var i = 1
   while (i < length) and (t.sons[i].kind == nkExceptBranch): 
diff --git a/config/nimrod.cfg b/config/nimrod.cfg
index c98f30f021..fdab40c6c2 100755
--- a/config/nimrod.cfg
+++ b/config/nimrod.cfg
@@ -62,6 +62,7 @@ hint[LineTooLong]=off
   @if not bsd:
     # -fopenmp
     gcc.options.linker = "-ldl"
+    gpp.options.linker = "-ldl"
     clang.options.linker = "-ldl"
     tcc.options.linker = "-ldl"
   @else:
@@ -83,24 +84,23 @@ icc.options.linker = "-cxxlib"
     tlsEmulation:on
   @end
 @end
-gcc.options.debug = "-g3 -O0"
 
 @if macosx:
   tlsEmulation:on
-  @if not release:
-    gcc.options.always = "-w -fasm-blocks -O1"
-  @else:
-    gcc.options.always = "-w -fasm-blocks"
-  @end
+  gcc.options.always = "-w -fasm-blocks"
+  gpp.options.always = "-w -fasm-blocks"
 @else:
-  @if not release:
-    gcc.options.always = "-w"
-  @else:
-    gcc.options.always = "-w"
-  @end
+  gcc.options.always = "-w"
+  gpp.options.always = "-w"
 @end
+
 gcc.options.speed = "-O3 -fno-strict-aliasing"
 gcc.options.size = "-Os"
+gcc.options.debug = "-g3 -O0"
+
+gpp.options.speed = "-O3 -fno-strict-aliasing"
+gpp.options.size = "-Os"
+gpp.options.debug = "-g3 -O0"
 #passl = "-pg"
 
 # Configuration for the LLVM GCC compiler:
diff --git a/lib/pure/os.nim b/lib/pure/os.nim
index 570bf3e8a4..19a2fc7116 100755
--- a/lib/pure/os.nim
+++ b/lib/pure/os.nim
@@ -1346,11 +1346,15 @@ when defined(linux) or defined(solaris) or defined(bsd) or defined(aix):
     setlen(result, len)
 
 when defined(macosx):
+  type
+    cuint32* {.importc: "unsigned int", nodecl.} = int
+    ## This is the same as the type ``uint32_t`` in *C*.
+  
   # a really hacky solution: since we like to include 2 headers we have to
   # define two procs which in reality are the same
-  proc getExecPath1(c: cstring, size: var int32) {.
+  proc getExecPath1(c: cstring, size: var cuint32) {.
     importc: "_NSGetExecutablePath", header: "<sys/param.h>".}
-  proc getExecPath2(c: cstring, size: var int32): bool {.
+  proc getExecPath2(c: cstring, size: var cuint32): bool {.
     importc: "_NSGetExecutablePath", header: "<mach-o/dyld.h>".}
 
 proc getAppFilename*(): string {.rtl, extern: "nos$1".} =
@@ -1379,7 +1383,7 @@ proc getAppFilename*(): string {.rtl, extern: "nos$1".} =
   elif defined(bsd):
     result = getApplAux("/proc/" & $getpid() & "/file")
   elif defined(macosx):
-    var size: int32
+    var size: cuint32
     getExecPath1(nil, size)
     result = newString(int(size))
     if getExecPath2(result, size):
diff --git a/lib/pure/osproc.nim b/lib/pure/osproc.nim
index 2807743fe9..808c0735e9 100755
--- a/lib/pure/osproc.nim
+++ b/lib/pure/osproc.nim
@@ -123,7 +123,7 @@ when defined(macosx) or defined(bsd):
     HW_AVAILCPU = 25
     HW_NCPU = 3
   proc sysctl(x: ptr array[0..3, cint], y: cint, z: pointer,
-              a: var int, b: pointer, c: int): cint {.
+              a: var csize, b: pointer, c: int): cint {.
              importc: "sysctl", header: "<sys/sysctl.h>".}
 
 proc countProcessors*(): int {.rtl, extern: "nosp$1".} =
@@ -135,7 +135,8 @@ proc countProcessors*(): int {.rtl, extern: "nosp$1".} =
   elif defined(macosx) or defined(bsd):
     var
       mib: array[0..3, cint]
-      len, numCPU: int
+      numCPU: int
+      len: csize
     mib[0] = CTL_HW
     mib[1] = HW_AVAILCPU
     len = sizeof(numCPU)
diff --git a/lib/system.nim b/lib/system.nim
index c8166bc10b..5d01c5a44d 100755
--- a/lib/system.nim
+++ b/lib/system.nim
@@ -935,6 +935,8 @@ type # these work for most platforms:
     ## This is the same as the type ``short`` in *C*.
   cint* {.importc: "int", nodecl.} = int32
     ## This is the same as the type ``int`` in *C*.
+  csize* {.importc: "size_t", nodecl.} = int
+    ## This is the same as the type ``size_t`` in *C*.
   clong* {.importc: "long", nodecl.} = int
     ## This is the same as the type ``long`` in *C*.
   clonglong* {.importc: "long long", nodecl.} = int64
@@ -951,7 +953,7 @@ type # these work for most platforms:
     ## This is binary compatible to the type ``char**`` in *C*. The array's
     ## high value is large enough to disable bounds checking in practice.
     ## Use `cstringArrayToSeq` to convert it into a ``seq[string]``.
-
+  
   PFloat32* = ptr Float32 ## an alias for ``ptr float32``
   PFloat64* = ptr Float64 ## an alias for ``ptr float64``
   PInt64* = ptr Int64 ## an alias for ``ptr int64``