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petrify-headers + Makefile.am usage
From: |
Thien-Thi Nguyen |
Subject: |
petrify-headers + Makefile.am usage |
Date: |
Fri, 16 Aug 2002 16:58:15 -0700 |
folks,
here's a libguile/Makefile.am fragment that calls petrify-headers
(appended below) to process all the libguile/*.h immediately prior to
install.
## Delete any mis-installs from the past that we can guarantee never to be
## installed in the future. Also, replace some installed headers w/
petrified.
install-data-hook:
rm -f $(DESTDIR)$(modincludedir)/scmconfig.h
$(srcdir)/petrify-headers $(srcdir) $(modinclude_HEADERS)
files=`ls *.petrified | sed 's/.petrified$$//g'`; \
for f in $$files ; do \
$(INSTALL_DATA) $$f.petrified $(DESTDIR)$(modincludedir)/$$f ; done
rm -f *.petrified
let me know if this rubs anyone wrong or if there is a better way to do
the same thing i haven't discovered. if not, this will go into guile
1.4.2 as a way to eliminate scmconfig.h cpp symbol pollution. to play,
comment out some of the "rm -f" commands and look at the intermediate
files.
thi
__________________________________________________
#!/bin/sh
# Usage: petrify-headers SRCDIR [FILE ...]
#
# Description: Scan scmconfig.h and then for each SRCDIR/FILE ...
# write ./FILE.petrified
if [ x"$1" = x ] ; then
echo 'ERROR: no srcdir specified'
exit 1
fi
srcdir=$1 ; shift
if [ x"$1" = x ] ; then
echo 'ERROR: no files specified'
exit 1
fi
one_syms=`awk '/^#define /{print $2}' scmconfig.h`
zero_syms=`awk '/^...#undef/{print $3}' scmconfig.h`
# first construct sed script
display_sed_script ()
{
echo 's,#include "libguile/scmconfig.h",,g'
for sym in $one_syms ; do
echo 's,^# *if\(def\)* '"$sym"'$,#if 1 /* petrified '"$sym"' */,g'
done
for sym in $zero_syms ; do
echo 's,^# *if\(def\)* '"$sym"'$,#if 0 /* petrified '"$sym"' */,g'
done
}
script=petrify-headers.sed
changed=petrify-headers.changed
unchanged=petrify-headers.unchanged
display_sed_script > $script
rm -f $changed $unchanged
touch $changed $unchanged
for f in "$@" ; do
sed -f $script $srcdir/$f > $f.petrified
if diff -q $srcdir/$f $f.petrified >/dev/null 2>&1 ; then
rm $f.petrified ; echo $f >> $unchanged
else
echo $f >> $changed
fi
done
rm -f $script
wc -l $changed $unchanged
rm -f $changed $unchanged
# petrify-headers ends here
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