04-23-2013
Quote:
Originally Posted by
Don Cragun
Your makefile contains rules for creating cpp2html.o from cpp2html.c, lex.yy.o from lex.yy.c, and cpp2html from cpp2html.o and lex.yy.o.
The second bullet in your problem statement talks about creating lex.yy.c. Do you have a rule that builds lex.yy.c if the contents of its dependencies have changed since the last time you ran make?
When you ran make, did it produce any error messages?
I removed this line "flex cppscanner.l" from the makefile and ran it through the shell and it produced the lex.yy.c file. So then I save and do "make" to update everything and then "make cpp2html" to produce the program which after doing "ls" in shell I see it produced but when I run the checker I get the same error:
Your makefile does not build 'cpp2html' when invoked:
gcc -g -DDEBUG -c cpp2html.c
I guess I need to do a command to make lex.yy.c in the makefile but just typing flex cppscanner.l in the makefile and running doesn't do it.
EDIT: I was able to solve and complete this task. Thanks for you help.
Last edited by lamentofking; 04-23-2013 at 07:19 PM..
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md(1) BSD General Commands Manual md(1)
NAME
md -- process raw dependency files produced by cpp -MD
SYNOPSIS
md [-d] [-f] [-m makefile] [-u makefile] [-o outputfile] [-v] [-x] [-D c|d|m|o|t|D]
DESCRIPTION
The md command basically does two things:
Process the raw dependency files produced by the cpp -MD option. There is one line in the file for every #include encountered, but there are
repeats and patterns like .../dir1/../dir2 that appear which should reduce to .../dir2. md canonicalizes and flushes repeats from the depen-
dency list. It also sorts the file names and "fills" them to a 78 character line.
md also updates the makefile directly with the dependency information, so the .d file can be thrown away (see d option). This is done to
save space. md assumes that dependency information in the makefile is sorted by .o file name and it procedes to merge in (add/or replace [as
appropriate]) the new dependency lines that it has generated. For time efficiency, md assumes that any .d files it is given that were cre-
ated before the creation date of the "makefile" were processed already. It ignores them unless the force flag [f] is given.
FLAG SUMMARY
-D c|D|d|m|o|t
Specify debugging option(s):
c show file contents
D show very low level debugging
d show new dependency crunching
m show generation of makefile
o show files being opened
t show time comparisons
-d Delete the .d file after it is processed
-f Force an update of the dependencies in the makefile, even if the makefile is more recent than the .n file. (This implies that md has
been run already.)
-m makefile
Specify the makefile to be upgraded. The defaults are makefile and then Makefile.
-o outputfile
Specify an output file (other than a makefile) for the dependencies.
-u makefile
Like -m, but the file will be created if necessary.
-v Set the verbose flag.
-x Expunge old dependency information from the makefile.
SEE ALSO
make(1)
BUGS
Old, possibly not used by anyone.
HISTORY
The md utility was written by Robert V. Baron at Carnegie-Mellon University.
BSD
June 2, 2019 BSD