[LLVMdev] linux build problem

[Török Edwin]

On 2009-01-20 08:01, Bill Wendling wrote:
> On Jan 19, 2009, at 5:34 PM, John Regehr wrote:
>
>   
>> Since yesterday I've been getting the error below when building llvm- 
>> gcc
>> on Ubuntu Hardy on x86.   For some reason, several instances of  
>> autoconf
>> are getting confused and failing to detect a stdlib.h.
>>
>> John
>>
>>
>> /home/regehr/z/tmp/llvm-gcc-r62547-src/build/./prev-gcc/xgcc
>> -B/home/regehr/z/tmp/llvm-gcc-r62547-src/build/./prev-gcc/
>> -B/home/regehr/z/tmp/llvm-gcc-r62547-install/i686-pc-linux-gnu/bin/ -c
>> -DHAVE_CONFIG_H -O2 -g -fomit-frame-pointer -I.
>> -I../../libiberty/../include  -W -Wall -pedantic -Wwrite-strings
>> -Wstrict-prototypes -Wc++-compat ../../libiberty/cplus-dem.c -o  
>> cplus-dem.o
>> no
>> checking for ldfcn.h... ../../libiberty/cplus-dem.c:55: warning:
>> function declaration isn’t a prototype
>> ../../libiberty/cplus-dem.c:55: error: conflicting types for ‘malloc’
>> _______________________________________________
>>     
>
> I'll need some more information than this. I don't have a Linux box,  
> so I can't tell. Do you have a .i file? How is autoconf being  
> confused? What does config.log say about it?
>
>   

I've seen this failure on my nightly builder too (SVN r62521), it is
related to the -Wformat-security changes,
apparently libiberty's configure considers warnings as failures:

configure:3691: checking for stdlib.h
configure:3704:  /home/edwin/llvm-bootstrap/llvm-obj/./prev-gcc/xgcc
-B/home/edwin/llvm-bootstrap/llvm-obj/./prev-gcc/
-B/home/edwin/llvm-bootstrap/llvm-obj/../install/x86_64-unknown-linux-gnu/bin/
-E  conftest.c

cc1: warning: -Wformat-security ignored without -Wformat

configure:3710: $? = 0
configure: failed program was:
| /* confdefs.h.  */
|
| #define PACKAGE_NAME ""
| #define PACKAGE_TARNAME ""
| #define PACKAGE_VERSION ""
| #define PACKAGE_STRING ""
| #define PACKAGE_BUGREPORT ""
| /* end confdefs.h.  */
| #include <stdlib.h>
configure:3731: result: no

Best regards,
--Edwin