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#!/usr/bin/awk -f
# This script adds
#
# #include <config.h>
#
# before the first #include line it finds.
function do_writeout ()
{
if (output && writeout)
system ("mv " output " " input );
}
{
if (FNR == 1)
{
do_writeout();
# beginning of a file
input = FILENAME;
output = FILENAME "-new";
n_includes = 0;
writeout = 1;
done = 0;
}
}
/\#include/ {
if (n_includes == 0 && /\#include <config.h>/)
{
print "skipping " FILENAME
writeout = 0;
nextfile;
}
++n_includes;
if (!done) {
print "#ifdef HAVE_CONFIG_H" > output;
print "#include <config.h>" > output;
print "#endif" > output;
done = 1;
}
}
{
print > output
}
END {
do_writeout();
}
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