asm: Fix the preprocessing script.

[b43-tools.git] / assembler / b43-asm

diff --git a/assembler/b43-asm b/assembler/b43-asm
index ec6fa6e46c872aef30b044cefb4cb8a076b21a75..f910a6b0f3ec846c3ca08d82c3f1b503e3723e99 100755 (executable)
--- a/assembler/b43-asm
+++ b/assembler/b43-asm
@@ -1,27 +1,51 @@
-#!/bin/sh
+#!/bin/bash
+#
+#  b43-asm preprocessing frontend
+#
+#  Copyright (c) 2007 Michael Buesch <mb@bu3sch.de>
+#  Licensed under the GNU/GPL version 2.
+#
 
-installed=0
 
-if [ -z "$B43_ASM" ]; then
-       if [ $installed -eq 0 ] && [ -x "./b43-asm.bin" ]; then
-               B43_ASM="./b43-asm.bin"
-       else
-               B43_ASM="b43-asm.bin"
-       fi
+# The b43-asm backend binary
+B43_ASM="b43-asm.bin"
+# The C preprocessor binary
+CPP="cpp"
+
+
+# This variable is changed by the installer scripts.
+installed=0
+if [ $installed -eq 0 ] && [ -x "./$B43_ASM" ]; then
+       B43_ASM="./$B43_ASM"
 fi
 
-if [ -z "$CPP" ]; then
-       CPP="cpp"
+# Probe the CPP binary
+$CPP --help >/dev/null 2>&1
+if [ $? -ne 0 ]; then
+       echo "ERROR: Failed to execute the C preprocessor \"$CPP\""
+       exit 1
+fi
+# Probe the b43-asm binary
+$B43_ASM a b --help >/dev/null 2>&1
+if [ $? -ne 0 ]; then
+       echo "ERROR: Failed to execute the b43-asm binary \"$B43_ASM\""
+       exit 2
 fi
 
 if [ $# -lt 2 ]; then
        $B43_ASM --help
-       exit 1
+       exit 3
 fi
-
 infile="$1"
 shift
 outfile="$1"
 shift
 
-cat "$infile" | $CPP -traditional-cpp | $B43_ASM "-" "$outfile" $@
+if [ "$infile" != "-" ]; then
+       if ! [ -r "$infile" ]; then
+               echo "ERROR: Can not read input file \"$infile\""
+               exit 4
+       fi
+fi
+
+$CPP -traditional-cpp "$infile" | $B43_ASM "-" "$outfile" $@