Blame SOURCES/unzip-6.0-bzip2-configure.patch

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diff -up unzip60/unix/configure.bzip2-configure unzip60/unix/configure
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--- unzip60/unix/configure.bzip2-configure	2009-04-16 21:25:12.000000000 +0200
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+++ unzip60/unix/configure	2009-11-18 11:22:14.598389194 +0100
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@@ -640,7 +640,24 @@ else
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     D_USE_BZ2="-DUSE_BZIP2"
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     L_BZ2="${BZLF} -lbz2"
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   else
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-    echo "-- bzip2 sources not found - no bzip2 support"
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+    echo "  Check if OS already has bzip2 library installed"
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+    cat > conftest.c << _EOF_
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+#include "bzlib.h"
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+int main()
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+{
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+  bz_stream strm;
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+  BZ2_bzCompressEnd(&strm;;
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+  return 0;
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+}
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+_EOF_
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+    $CC $CFLAGS -o conftest conftest.c -lbz2 > /dev/null 2>/dev/null
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+    if test $? -eq 0; then
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+      echo "-- OS supports bzip2 - linking in bzip2"
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+      D_USE_BZ2="-DUSE_BZIP2"
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+      L_BZ2="${BZLF} -lbz2"
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+    else
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+      echo "-- Either bzlib.h or libbz2.a not found - no bzip2"
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+    fi
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   fi
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 fi
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