checking for sin in -lm fails

[Tim Blechmann]

hi all,

there is a bug in autoconf concerning the symbol checking in libraries:

my configure.in file contains:
AC_CHECK_LIB(m,sin)

the specific part in the config.log says:
configure:4961: checking for sin in -lm
configure:4991: gcc -o conftest -g -O2   -L/usr/X11R6/lib conftest.c -lm
 -Wl,-s hared -Wl,-export-dynamic -lXxf86vm -lXext -lX11  >&5
conftest.c:23: warning: conflicting types for built-in function 'sin'
/usr/lib/libc_nonshared.a(elf-init.oS)(.text+0x1c): In function
`__libc_csu_init ':
: undefined reference to `__init_array_end'
/usr/lib/libc_nonshared.a(elf-init.oS)(.text+0x22): In function
`__libc_csu_init ':
: undefined reference to `__init_array_start'
/usr/lib/libc_nonshared.a(elf-init.oS)(.text+0x68): In function
`__libc_csu_fini ':
: undefined reference to `__fini_array_end'
/usr/lib/libc_nonshared.a(elf-init.oS)(.text+0x6e): In function
`__libc_csu_fini ':
: undefined reference to `__fini_array_start'
/usr/bin/ld: conftest: hidden symbol `__fini_array_end' isn't defined
/usr/bin/ld: final link failed: Nonrepresentable section on output
collect2: ld returned 1 exit status
configure:4997: $? = 1

am i missing something, or is it a problem of autoconf?

thanks ... tim 

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