ports/186790: textproc/flex 2.5.38 causes some depedencies to fail to build

[Matthew Rezny]

>Number:         186790
>Category:       ports
>Synopsis:       textproc/flex 2.5.38 causes some depedencies to fail to build
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-ports-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sat Feb 15 13:30:00 UTC 2014
>Closed-Date:
>Last-Modified:
>Originator:     Matthew Rezny
>Release:        10.0-STABLE
>Organization:
RezTEk, s.r.o.
>Environment:
FreeBSD desktop.reztek 10.0-STABLE FreeBSD 10.0-STABLE #0 r261871: Fri Feb 14 16:41:18 CET 2014   root at desktop.reztek:/usr/obj/usr/src/sys/DESKTOP  amd64
>Description:
multimedia/libkate 0.4.1_2 (needed for VLC) failed to build on this machine. I had installed just installed VLC, and thus libkate, an another machine less than a week prior. The versions and options for libkate were same on both. The most pertinent difference I noticed between the two machines was the version of flex. Reverting to the prior version of flex corrected the build problem.

The tail of the libkate build was as follows:
[snip; no errors, minor unrelated warnings]
/bin/sh ../libtool --tag=CC --silent --mode=link cc -Wall -W  -I/usr/src/include  -I/usr/local/include/libpng15  -O3 -pipe -march=amdfam10 -I/usr/local/include -fstack-protector -fno-strict-aliasing -fstack-protector -o kateenc kateenc-kateenc.o kateenc-kate_lexer.o kateenc-kate_parser.o kateend-kpng.o ../lib/liboggkate.la ../lib/libkate.la -L/usr/local/lib -logg  -L/usr/local/lib -lpng15   -lfl
/usr/local/lib/libfl.so: undefined reference to 'yylex'
cc:error: linker command failed with exit code 1 (use -v to see invocation)
gmake[3]: *** [kateenc] Error 1
gmake[3]: Leaving directory '/usr/obj/usr/ports/multimedia/libkate/work/libkate-0.4.1/tools'
gmake[2]: *** [all-recursive] Error 1
gmake[2]: Leaving directory '/usr/obj/usr/ports/multimedia/libkate/work/libkate-0.4.1/tools'
[snip; gmake recursion]
gmake: *** [all] Error 2

>How-To-Repeat:
Ensure /usr/ports is at least r344136 (so that flex is at 2.5.38)
cd /usr/ports/textproc/flex && make install clean (will succeed)
cd /usr/ports/multimedia/libkate && make install clean (will fail)


>Fix:
Revert flex to 2.5.37_1 i.e. cd /usr/ports/textproc/flex && svnlite -r 339569 up && make (re)install clean
cd /usr/ports/multimedia/libkate && make install clean (now succeeds)


>Release-Note:
>Audit-Trail:
>Unformatted: