Re: [PATCH] fix hesiod check error, use correct $(LIBS)

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On Wed, Jul 24, 2013 at 10:16 AM, Ian Kent <raven@xxxxxxxxxx> wrote:
> On Tue, 2013-07-23 at 23:59 +0800, Lan Yixun (dlan) wrote:
>> From: "Lan Yixun (dlan)" <dennis.yxun@xxxxxxxxx>
>>
>> the problem here is that hesiod checking always fail due to wrong $(LDFLAGS),
>> no matter hesiod library is installed or not. moving "-lhesiod" into
>> $(LIBS) solve this problem.
>>
>> 1) convert "char *" -> "void *" to fix the compile warning
>> 2) put "-lhesiod -lresolv" into $(LIBS), not into $(LDFLAGS), otherwise we got link error
>
> Right, on the queue, will push to the repo next time I commit.
> Thanks
> Ian
>
>>
>> ---
>> tst_hesiod.c: In function ‘main’:
>> tst_hesiod.c:38:3: warning: passing argument 1 of ‘hesiod_init’ from incompatible pointer type
>> [enabled by default]
>>    char *c; hesiod_init(&c);
>>    ^
>> In file included from tst_hesiod.c:34:0:
>> /usr/include/hesiod.h:36:5: note: expected ‘void **’ but argument is of type ‘char **’
>>  int hesiod_init(void **context);
>>
>>
>>
>> $ x86_64-pc-linux-gnu-gcc -o conftest -O2 -pipe -march=core2  -I/usr/include
>>  -Wl,-O1 -Wl,--as-needed -g -lhesiod -lresolv tst_hesiod.c -L/usr/lib64
>>  -lkrb5 -lhx509 -lcom_err -lhcrypto -lasn1 -lwind -lheimbase -lroken
>> -lcrypt -ldl -lresolv
>>
>> /tmp/ccN6GW0r.o: In function `main':
>> /root/tst_hesiod.c:38: undefined reference to `hesiod_init'
>> collect2: error: ld returned 1 exit status
>>
>> Signed-off-by: Lan Yixun (dlan) <dennis.yxun@xxxxxxxxx>
>> ---
>>  aclocal.m4 | 12 ++++++------
>>  1 file changed, 6 insertions(+), 6 deletions(-)
>>
>> diff --git a/aclocal.m4 b/aclocal.m4
>> index 7a8b03c..637a775 100644
>> --- a/aclocal.m4
>> +++ b/aclocal.m4
>> @@ -316,20 +316,20 @@ dnl --------------------------------------------------------------------------
>>  AC_DEFUN([AF_CHECK_LIBHESIOD],
>>  [AC_MSG_CHECKING(for libhesiod)
>>
>> -# save current ldflags
>> -af_check_hesiod_save_ldflags="$LDFLAGS"
>> -LDFLAGS="$LDFLAGS -lhesiod -lresolv"
>> +# save current libs
>> +af_check_hesiod_save_libs="$LIBS"
>> +LIBS="$LIBS -lhesiod -lresolv"
>>
>>  AC_TRY_LINK(
>>    [ #include <hesiod.h> ],
>> -  [ char *c; hesiod_init(&c); ],
>> +  [ void *c; hesiod_init(&c); ],
>>    [ HAVE_HESIOD=1
>>      LIBHESIOD="$LIBHESIOD -lhesiod -lresolv"
>>      AC_MSG_RESULT(yes) ],
>>    [ AC_MSG_RESULT(no) ])
>>
>> -# restore ldflags
>> -LDFLAGS="$af_check_hesiod_save_ldflags"
>> +# restore libs
>> +LIBS="$af_check_hesiod_save_libs"
>>  ])
>>
>>  dnl --------------------------------------------------------------------------
>
>
Hi Ian:
 Great! Thanks.

Dennis Lan (dlan)
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