ccan code breaks older build farm systems

[Michael Adam]

Forgot the list... resending.


Hi Rusty,

the recent addition of the ccan code has broken several builds
on the build farm:

e.g.:

http://build.samba.org/build.cgi/build/fce639c8f71c197957cdaaded0c7c692753e123d

...
Linking shared library bin/libnetapi.so.0
../lib/ccan/tally/tally.o: In function `fls64':
../lib/ccan/tally/tally.o(.text+0x4e6): undefined reference to
`__builtin_clzl'
collect2: ld returned 1 exit status
...

This is triggered by the addition of @CCAN_OBJ@ into LIB_OBJ
in source3/Makefile.in.

There are configure checks but they don't seem to work:

...
configure:6867: checking whether we have __builtin_clzl
configure:6879: ccache gcc -c  -Wall  conftest.c >&5
conftest.c: In function `main':
conftest.c:50: warning: implicit declaration of function `__builtin_clzl'
configure:6879: $? = 0
configure:6885: result: yes
...

Could the included ccan code be converted to use libreplace?

Also, the ccan files don't have a copyright/license header
comment block.

Cheers - Michael

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