Jan Synacek wrote:

Howard Chu hyc@symas.com writes:

...

jsynacek@redhat.com wrote:

...

Full_Name: Jan Synacek Version: 2.4.40 OS: GNU/Linux URL: https://jsynacek.fedorapeople.org/openldap/jsynacek-20150211-fix-libdb-detec... Submission from: (NULL) (94.112.188.81)

The old cpp version generated: __db_version 5

Configure then correctly picked up the version, since it greps for "__db_version".

The new output: __db_version 5

Grepping no longer works and configure fails.

Running cpp with -P (inhibit linemarkers generation) fixes this when using gcc 5. Behavior with older versions of gcc is not changed.

Your patch is simple enough but frankly this sounds like a bug in gcc 5's cpp. It shouldn't be inserting gratuitous whitespace in the middle of lines, or inserting line breaks arbitrarily.

Yes, probably. But in the meantime, I needed the package to build, so I wrote this patch.

Please file a bug with the gcc project and followup here with a link to that bug, for future reference. Thanks.

Adding this patch to git master.