+# signal.h on SunOS defines signal using (), which causes trouble when
+# compiling with g++ -pedantic.
+for file in signal.h sys/signal.h; do
+ if [ -r $file ] && [ ! -r ${LIB}/$file ]; then
+ cp $file ${LIB}/$file >/dev/null 2>&1 || echo "Can't copy $file"
+ chmod +w ${LIB}/$file 2>/dev/null
+ chmod a+r ${LIB}/$file 2>/dev/null
+ fi
+
+ if [ -r ${LIB}/$file ]; then
+ echo "Checking for bad C++ prototype in $file"
+ sed -e '/^void (\*signal())();$/i\
+ #ifdef __cplusplus\
+ void (*signal(...))(...);\
+ #else
+ ' \
+ -e '/^void (\*signal())();$/a\
+ #endif
+ ' \
+ ${LIB}/$file > ${LIB}/${file}.sed
+ rm -f ${LIB}/$file; mv ${LIB}/${file}.sed ${LIB}/$file
+ if cmp $file ${LIB}/$file >/dev/null 2>&1; then
+ rm -f ${LIB}/$file
+ else
+ # Find any include directives that use "file".
+ for include in `egrep '^[ ]*#[ ]*include[ ]*"[^/]' ${LIB}/$file | sed -e 's/^[ ]*#[ ]*include[ ]*"\([^"]*\)".*$/\1/'`; do
+ dir=`echo $file | sed -e s'|/[^/]*$||'`
+ required="$required ${INPUT} $dir/$include ${LIB}/$dir/$include"
+ done
+ fi
+ fi
+done
+
+# sys/signal.h on some versions of AIX uses volatile in the typedef of
+# sig_atomic_t, which causes gcc to generate a warning about duplicate
+# volatile when a sig_atomic_t variable is declared volatile, as
+# required by ANSI C.
+file=sys/signal.h
+if [ -r $file ] && [ ! -r ${LIB}/$file ]; then
+ cp $file ${LIB}/$file >/dev/null 2>&1 || echo "Can't copy $file"
+ chmod +w ${LIB}/$file 2>/dev/null
+ chmod a+r ${LIB}/$file 2>/dev/null
+fi
+
+if [ -r ${LIB}/$file ]; then
+ echo "Checking for duplicate volatile in sys/signal.h"
+ sed -e 's/typedef volatile int sig_atomic_t/typedef int sig_atomic_t/' \
+ ${LIB}/$file > ${LIB}/${file}.sed
+ rm -f ${LIB}/$file; mv ${LIB}/${file}.sed ${LIB}/$file
+ if cmp $file ${LIB}/$file >/dev/null 2>&1; then
+ rm -f ${LIB}/$file
+ else
+ # Find any include directives that use "file".
+ for include in `egrep '^[ ]*#[ ]*include[ ]*"[^/]' ${LIB}/$file | sed -e 's/^[ ]*#[ ]*include[ ]*"\([^"]*\)".*$/\1/'`; do
+ dir=`echo $file | sed -e s'|/[^/]*$||'`
+ required="$required ${INPUT} $dir/$include ${LIB}/$dir/$include"
+ done
+ fi
+fi
+
+# Some math.h files define struct exception, which conflicts with
+# the class exception defined in the C++ file std/stdexcept.h. We
+# redefine it to __math_exception. This is not a great fix, but I
+# haven't been able to think of anything better.
+file=math.h
+if [ -r $file ] && [ ! -r ${LIB}/$file ]; then
+ cp $file ${LIB}/$file >/dev/null 2>&1 || echo "Can't copy $file"
+ chmod +w ${LIB}/$file 2>/dev/null
+ chmod a+r ${LIB}/$file 2>/dev/null
+fi
+
+if [ -r ${LIB}/$file ]; then
+ echo Fixing $file, exception
+ sed -e '/struct exception/i\
+#ifdef __cplusplus\
+#define exception __math_exception\
+#endif'\
+ -e '/struct exception/a\
+#ifdef __cplusplus\
+#undef exception\
+#endif' ${LIB}/$file > ${LIB}/${file}.sed
+ rm -f ${LIB}/$file; mv ${LIB}/${file}.sed ${LIB}/$file
+ if egrep 'matherr()' ${LIB}/$file >/dev/null 2>&1; then
+ sed -e '/matherr/i\
+#ifdef __cplusplus\
+#define exception __math_exception\
+#endif'\
+ -e '/matherr/a\
+#ifdef __cplusplus\
+#undef exception\
+#endif' ${LIB}/$file > ${LIB}/${file}.sed
+ rm -f ${LIB}/$file; mv ${LIB}/${file}.sed ${LIB}/$file
+ fi
+ if cmp $file ${LIB}/$file >/dev/null 2>&1; then
+ rm -f ${LIB}/$file
+ else
+ # Find any include directives that use "file".
+ for include in `egrep '^[ ]*#[ ]*include[ ]*"[^/]' ${LIB}/$file | sed -e 's/^[ ]*#[ ]*include[ ]*"\([^"]*\)".*$/\1/'`; do
+ dir=`echo $file | sed -e s'|/[^/]*$||'`
+ required="$required ${INPUT} $dir/$include ${LIB}/$dir/$include"
+ done
+ fi
+fi
+
+# This loop does not appear to do anything, because it uses file
+# rather than $file when setting target. It also appears to be
+# unnecessary, since the main loop processes symbolic links.
+#if $LINKS; then
+# echo 'Making internal symbolic non-directory links'
+# cd ${INPUT}
+# files=`find . -type l -print`
+# for file in $files; do
+# dest=`ls -ld $file | sed -n 's/.*-> //p'`
+# if expr "$dest" : '[^/].*' > /dev/null; then
+# target=${LIB}/`echo file | sed "s|[^/]*\$|$dest|"`
+# if [ -f $target ]; then
+# ln -s $dest ${LIB}/$file >/dev/null 2>&1
+# fi
+# fi
+# done
+#fi
+