<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>This seems to haunt us forever. It is tricky to keep supporting all combinations of flex/bison/gcc</div><div id="AppleMailSignature"><br></div><div id="AppleMailSignature">You can set WERROR_FLAGS="" to work around it. (See mk/*)<br><br>Sent from my iPhone</div><div><br>On Apr 6, 2016, at 04:28, Lin Song <<a href="mailto:notifications@github.com">notifications@github.com</a>> wrote:<br><br></div><blockquote type="cite"><div><p>In Ubuntu 16.04 (to be released in a few days) and under GCC 5.3.1, compilation of Libreswan 3.17 fails with the following error:</p>

<pre><code>        -o ./lex.yy.o \
        -c /opt/src/libreswan-3.17/OBJ.linux.x86_64/lib/libipsecconf/lex.yy.c
lex.yy.c.11447: In function 'yy_get_next_buffer':
lex.yy.c.11447:1723:44: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
cc1: all warnings being treated as errors
../../../mk/depend.mk:28: recipe for target 'lex.yy.o' failed
make[3]: *** [lex.yy.o] Error 1
make[3]: Leaving directory '/opt/src/libreswan-3.17/OBJ.linux.x86_64/lib/libipsecconf'
../../mk/library.mk:41: recipe for target 'local-base' failed
make[2]: *** [local-base] Error 2
make[2]: Leaving directory '/opt/src/libreswan-3.17/lib/libipsecconf'
../mk/subdirs.mk:33: recipe for target 'all' failed
make[1]: *** [all] Error 2
make[1]: Leaving directory '/opt/src/libreswan-3.17/lib'
/opt/src/libreswan-3.17/mk/subdirs.mk:33: recipe for target 'all' failed
make: *** [all] Error 2
</code></pre>

<p>Thanks for looking into this issue again.</p>

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