Flex patch updates Lex/Flex file "scan.l" after C file "scan.c"

[yam655@…]

I was using Flex-2.5.31 and LFS-BOOK-SVN-20050524.

Specifically, the flex-2.5.31-debian_fixes-2.patch updates the Flex file ("scan.l") after the C file ("scan.c"). When Make is executed it sees the Flex file as being newer than the C file and tries to update it. This causes it to realize that it needs Lex/Flex.

A simple solution to the problem is easy, touch the pre-generated file ("scan.c") after putting the patch in place.

A better, longer-term solution is to update the patch file to update the C file ("scan.c") after Lex/Flex file ("scan.l").

[jim@…]

Try using the ​http://www.linuxfromscratch.org/patches/downloads/flex/flex- 2.5.31-debian_fixes-4.patch, and see if the error still occurs.

[archaic@…]

Is the -4 patch confirmed to fix the problem? If so I'll add it to the book and close this bug.

[Matthew Burgess]

No it doesn't, it has loads of unnecessary cruft and the scan.l and scan.c hunks are in the same order as in the -2 patch. ​http://www.linuxfromscratch.org/~matthew/flex-2.5.31-debian_fixes-5.patch should do the trick. I've just removed the 'scan.l' hunk too, so it contains no redundancy. I think we should actually pull the -4 patch out the repository and put my -5 version in as -3, so that the numbering is sequential. I don't know what happened to the original -3 if there was one.

Matt.

[archaic@…]

Fixed in trunk r6059. Awaiting approval to merge.

[archaic@…]

Fixed in testing r6070.