diff --git a/README.md b/README.md
index 1d95471..daf42df 100644
--- a/README.md
+++ b/README.md
@@ -21,17 +21,27 @@ For jar:
 
 ## Usage
 
-The environment variable SCMC must be set to the same value as the implementations command.
-The command is the first word on the list.  So for example guile for Guile, csi for Chicken
-interpreter, csc for Chicken compiler.
+The environment variable SCMC must be set to the same value as the
+implementations command.  The command is the first word on the list.
+So for example guile for Guile, csi for Chicken interpreter, csc for Chicken
+compiler.
 
-If the command has .exe at it's end cross compilation from Linux to .exe with Wine is assumed.
+If the command has .exe at it's end cross compilation from Linux to .exe with
+Wine is assumed.
 
 
 Run
 
     SCMC=<SCHEME> compile-r7rs -I <DIR> <file.scm>
 
+So for example to build hello-world.scm with Racket for both Linux and Wine run:
+
+    SCMC=racket compile-r7rs -I ./snow hello-world.scm
+    SCMC=racket.exe compile-r7rs -I ./snow hello-world.scm
+
+Libraries in these commands are assumed to be under snow directory, so library
+(foo bar) would be in snow/foo/bar.sld.
+
 ## Outputs
 
 ### Self contained, self extracting and runnable shell script
@@ -53,7 +63,7 @@ Requires the Scheme implementation to be installed to run.
 
 ### Static binary executable
 
-Requires nothing to be installed to run.
+Does not require Scheme implementation to be installed to run.
 
 - csc (Chicken)
 - racket (Racket)
@@ -68,6 +78,7 @@ Only requires Java to be installed to run.
 ### .exe
 
 - racket.exe
+    - Install Racket and r7rs library with Wine to default locations
 
 ## How it works
 
diff --git a/compile-r7rs b/compile-r7rs
index 20273cc..ba3ab52 100755
--- a/compile-r7rs
+++ b/compile-r7rs
@@ -1,5 +1,6 @@
 #!/bin/sh
 
+
 if [ ! "$COMPILE_R7RS_DEBUG" = "" ]; then set -x; fi
 
 if [ "$CC" = "" ]
@@ -46,7 +47,11 @@ case "$SCMC" in
         scm_cmd="csi -b -R r7rs $paths -script"
         ;;
     csc)
-        set -x
+        if [ "$CSC_FLAGS" = "" ]
+        then
+            CSC_FLAGS=""
+        fi
+        set -eu
         paths="-I $tmpdir"
         objects=""
         units="r7rs,scheme.base,scheme.case-lambda,scheme.char,scheme.complex,scheme.cxr,scheme.eval,scheme.file,scheme.inexact,scheme.lazy,scheme.load,scheme.process-context,scheme.read,scheme.repl,scheme.time,scheme.write,scheme.r5rs"
@@ -54,7 +59,7 @@ case "$SCMC" in
         do
             paths="$paths -I $tmpdir/${dir#./}"
             findtmp="$(mktemp)"
-            find "$dir" -name '*.sld' > "$findtmp"
+            find "$dir" ! -name "$(printf "*\n*")" -name '*.sld' > "$findtmp"
             while IFS= read -r lib
             do
                 unit0=$(cd "$dir" && find . -name "$(basename "$lib")")
@@ -115,7 +120,7 @@ case "$SCMC" in
         do
             paths="$paths ${dir#./}"
             findtmp="$(mktemp)"
-            find "$dir" -name '*.sld' > "$findtmp"
+            find "$dir" ! -name "$(printf "*\n*")" -name '*.sld' > "$findtmp"
             while IFS= read -r lib
             do
                 libs="$libs $lib"
@@ -140,7 +145,7 @@ case "$SCMC" in
         do
             paths="$paths $dir"
             findtmp="$(mktemp)"
-            find "$dir" -name '*.sld' > "$findtmp"
+            find "$dir" ! -name "$(printf "*\n*")" -name '*.sld' > "$findtmp"
             while IFS= read -r lib
             do
                 kawa -C "$lib"
@@ -171,7 +176,7 @@ case "$SCMC" in
         do
             paths="$PWD/${dir#./}:$paths"
             findtmp="$(mktemp)"
-            find "$dir" -name '*.sld' > "$findtmp"
+            find "$dir" ! -name "$(printf "*\n*")" -name '*.sld' > "$findtmp"
             while IFS= read -r lib
             do
                 {
@@ -190,12 +195,13 @@ case "$SCMC" in
         exit
         ;;
     racket.exe)
-        paths="$PWD"
+        set -x
+        paths="$(winepath --windows $PWD)"
         for dir in $libdirs
         do
-            paths="$paths;$(winepath "$PWD"/"${dir#./}")"
+            paths="$paths;$(winepath --windows "$PWD"/"${dir#./}" | sed 's/\//\\/')"
             findtmp="$(mktemp)"
-            find "$dir" -name '*.sld' > "$findtmp"
+            find "$dir" ! -name "$(printf "*\n*")" -name '*.sld' > "$findtmp"
             while IFS= read -r lib
             do
                 {