[LLVMdev] Errors reported in config.log on linux

[Duncan Sands]

Hi Sitvanit,

> I ran ../llvm/configure CC=g44 CXX=g++44 and the exit code was 0, but
> in config.log I found   errors (mostly  about missing files)  and warnings
> (mostly about conflicts in builtin functions).

you can ignore these.  What configure does is try to compile lots of different
programs using all kinds of different compiler and O/S features to determine
what your system supports.  It is normal for some programs to not compile.

Ciao, Duncan.

>
> I thought maybe the fact I later get compilation errors when running make
> is related to these.
> How do I correct these errors? or can they be ignored?
>
> The full list of errors from config.log is below.
>
> =====================================================================================================
>
> conftest.c:10:28: error: ac_nonexistent.h: No such file or directory
>
> conftest.c:28: error: 'not' undeclared (first use in this function)
> conftest.c:28: error: (Each undeclared identifier is reported only once
> conftest.c:28: error: for each function it appears in.)
> conftest.c:28: error: expected ';' before 'big'
>
> conftest.c:96:16: error: dl.h: No such file or directory
>
> conftest.c:96:17: error: dld.h: No such file or directory
>
> conftest.c:96:25: error: mach-o/dyld.h: No such file or directory
> conftest.c:132:21: error: windows.h: No such file or directory
>
> conftest.c:139:27: error: malloc/malloc.h: No such file or directory
>
> conftest.c:139:23: error: mach/mach.h: No such file or directory
>
> conftest.c:139:31: error: valgrind/valgrind.h: No such file or directory
>
> conftest.c:141:33: error: CrashReporterClient.h: No such file or directory
>
> conftest.c:187: error: 'strerror_s' undeclared (first use in this function)
> conftest.c:187: error: (Each undeclared identifier is reported only once
> conftest.c:187: error: for each function it appears in.)
>
> conftest.cpp:161: error: `finite' was not declared in this scope
>
> conftest.cpp:164: error: `__sync_synchronize' was not declared in this
> scope
> conftest.cpp:165: error: `__sync_val_compare_and_swap' was not declared in
> this scope
> conftest.cpp:166: error: `__sync_add_and_fetch' was not declared in this
> scope
> conftest.cpp:167: error: `__sync_sub_and_fetch' was not declared in this
> scope
>
>
> Warnings:
> conftest.c:87: warning: conflicting types for built-in function 'strchr'
> conftest.c:88: warning: conflicting types for built-in function 'strrchr'
> conftest.c:89: warning: conflicting types for built-in function 'memcpy'
> conftest.c:90: warning: conflicting types for built-in function 'memmove'
> conftest.c:91: warning: conflicting types for built-in function 'strcmp'
> conftest.c:79: warning: conflicting types for built-in function 'sin'
> conftest.c:136: warning: conflicting types for built-in function 'ceilf'
> conftest.c:137: warning: conflicting types for built-in function 'floorf'
> conftest.c:138: warning: conflicting types for built-in function 'roundf'
> conftest.c:138: warning: conflicting types for built-in function 'roundf'
> conftest.c:140: warning: conflicting types for built-in function
> 'nearbyintf'
> conftest.c:142: warning: conflicting types for built-in function 'powf'
> conftest.c:142: warning: conflicting types for built-in function 'powf'
> conftest.c:145: warning: conflicting types for built-in function 'round'
> conftest.c:165: warning: the use of `mktemp' is dangerous, better use
> `mkstemp'
> conftest.c:160: warning: conflicting types for built-in function 'strdup'
>
> configure:20847: WARNING: LLVM will be built thread-unsafe because atomic
> builtins are missing
>
> Thanks,
> Sitvanit
>
> Sitvanit Ruah
> Formal Verification Group
> IBM Haifa Research Laboratory
>
>
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