+ $echo "Finding dependencies for $filebase$_o"
+ # Below, we strip out all but preprocessor directives.
+ # We have to take care of situations like
+ # #if defined(FOO) BAR /* comment line 1
+ # more comment lines */
+ # If we just delete text starting from the '/*' to the end of line, we will
+ # screw up cases like
+ # #if defined(FOO) /* comment */ \
+ # && defined(BAR) /* comment */ \
+ # && defined(BAZ) /* comment */ \
+ # etc.
+ # Also, in lines like
+ # #defined FOO(a,b) a/**/b
+ # the comment may be important and so needs to be retained.
+ # This code processes the single-line comments first; it assumes there is
+ # at most one straightforward comment per continued preprocessor line,
+ # replacing each non-empty comment (and its surrounding white space) by a
+ # single space. (sed only has a greedy '*' quantifier, so this doesn't
+ # work right if there are multiple comments per line, and strings can look
+ # like comments to it; both are unlikely in a preprocessor statement.) Any
+ # continuation line is joined, and the process repeated on the enlarged
+ # line as long as there are continuations. At the end, if there are any
+ # comments remaining, they are either completely empty or are like the
+ # first situation. The latter are just deleted by first deleting to the
+ # end of line (including preceding white space) things that start with '/*'
+ # and the next char isn't a '*'; then things that start with '/**', but the
+ # next char isn't a '/'. (Subsequent lines of the comment are irrelevant
+ # and get dropped.) At the end, we unjoin very long lines to avoid
+ # preprocessor limitations
+ ( $echo "#line 2 \"$file\""; \
+ $sed -n <$file \
+ -e "/^${filebase}_init(/q" \
+ -e ': tstcont' \
+ -e '/^[ ]*#/s|[ ]*/\*..*\*/[ ]*| |' \
+ -e '/\\$/{' \
+ -e 'N' \
+ -e 'b tstcont' \
+ -e '}' \
+ -e 's/\\\n//g' \
+ -e '/^#line/d' \
+ -e '/^[ ]*#/{' \
+ -e 's|[ ]*/\*[^*].*$||' \
+ -e 's|[ ]*/\*\*[^/].*$||' \
+ -e 's/.\{255\}/&\\\n/g' \
+ -e p \