sorensen@athena.mit.edu (Alma G. Sorensen) (04/19/91)
I'm trying to get rcs working under 2.0.
It tells me rcs needs a diff that does -n or something, which
from the man page A/UX's diff doesn't do. Fine. Gnu's does.
However, when I try to compile gnu's diff-1.15, I get errors:
gcc -O -DUSG -DSYSV -c diff.c
diff.c: In function compare_files:
diff.c:504: `S_IFDIR' undeclared (first use this function)
diff.c:504: (Each undeclared identifier is reported only once
diff.c:504: for each function it appears in.)
diff.c:504: `S_IFMT' undeclared (first use this function)
Make: *** Error: Update of diff.o terminated with exit code 1
Strangely, if I use cc instead of gcc, things compile fine!
I must have gcc installed wrong...What could I be missing?
Thanks,
Greg Sorensen
sorensen@athena.mit.edutony@kahu.marcam.dsir.govt.nz (Tony Cooper) (04/20/91)
In article <1991Apr19.151316.26992@athena.mit.edu>, sorensen@athena.mit.edu (Alma G. Sorensen) writes: |> I'm trying to get rcs working under 2.0. |> |> However, when I try to compile gnu's diff-1.15, I get errors: |> |> gcc -O -DUSG -DSYSV -c diff.c |> diff.c: In function compare_files: |> diff.c:504: `S_IFDIR' undeclared (first use this function) |> diff.c:504: (Each undeclared identifier is reported only once |> |> Strangely, if I use cc instead of gcc, things compile fine! |> I'm not going to tell you how to fix this problem, but tell how to fix this type of problem. A/UX can compile programs for several different environments - BSD and SYSV. The defines -DUSG and -DSYSV do not work in A/UX for defining the SYSV environment. cc defines the right ones by default, gcc does not. When the right flags are defined then S_IFDIR gets defined, else it doesn't. Read the man page for cc(1) for more information. In general, when a system identifier is not defined, do this: go into the /usr/include directory and do "fgrep -l S_IFDIR *". If that doesn't find it try /usr/include/sys or other directories under /usr/include or do a more sophisticated search of the hierarchy. If you find a .h file that defines S_IFDIR then examine your program and the .h file to see why it is not being defined in the program. Usually it is because the .h file is not included in the program. Sometimes it is because the definition (as in your case probably) has been 'ifdef'ed out eg #ifdef SOME_OTHER_SYMBOL #define S_IFDIR XXXXX #endif Then you should make sure that SOME_OTHER_SYMBOL is defined. Get the idea? You gotta know how the C preprocessor works so you have to have some C programming knowledge. Tony Cooper
liam@cs.qmw.ac.uk (William Roberts;) (04/24/91)
In <1991Apr19.151316.26992@athena.mit.edu> sorensen@athena.mit.edu (Alma G. Sorensen) writes: >I'm trying to get rcs working under 2.0. Have you perchance tried running /usr/ucb/rcs, as distributed with A/UX 2.0? The /FILES list of contents file on my A/UX 2.0 CD-ROM says the following: % grep rcs /nfs/CDROM/FILES /mac/lib/cmdo/r/rcs Commando dialog source script for the rcs command /mac/lib/cmdo/r/rcsdiff Commando dialog source script for the rcsdiff command /mac/lib/cmdo/r/rcsmerge Commando dialog source script for the rcsmerge command /mac/lib/cmdo/s/sccstorcs Commando dialog source script for the sccstorcs command /usr/catman/a_man/man1/sccstorcs.1m.z formatted manual entry for sccstorcs(1M) /usr/catman/u_man/man1/rcs.1.z formatted manual entry for rcs(1) /usr/catman/u_man/man1/rcsdiff.1.z formatted manual entry for rcsdiff(1) /usr/catman/u_man/man1/rcsintro.1.z formatted manual entry for rcsintro(1) /usr/catman/u_man/man1/rcsmerge.1.z formatted manual entry for rcsmerge(1) /usr/catman/u_man/man3/strcspn.3c.z formatted manual entry for strcspn(3c) /usr/catman/u_man/man4/rcsfile.4.z formatted manual entry for rcsfile(4) /usr/ucb/rcs binary executable for rcs(1) - change RCS file attributes /usr/ucb/rcsdiff binary executable for rcsdiff(1) - compare RCS revisions /usr/ucb/rcsmerge binary executable for rcsmerge(1) - merge RCS revisions /usr/ucb/sccstorcs binary executable for sccstorcs(1) - build RCS file from SCCS file My only gripe with the supplied rcs is that the tools all believe in 14 character filename limits. -- William Roberts Internet: liam@dcs.qmw.ac.uk Queen Mary & Westfield College UUCP: liam@qmw-dcs.UUCP Mile End Road AppleLink: UK0087 LONDON, E1 4NS, UK Tel: +44 71-975 5234 (Fax: +44 81-980 6533)