http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47032
Summary: libgfortran references complex long double functions
missing on AIX
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libfortran
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: d...@gcc.gnu.org
ld: 0711-317 ERROR: Undefined symbol: .__copysignl128
ld: 0711-317 ERROR: Undefined symbol: .__nextafterl128
ld: 0711-317 ERROR: Undefined symbol: .__scalbnl128
ld: 0711-317 ERROR: Undefined symbol: .__cabsl128
ld: 0711-317 ERROR: Undefined symbol: .__cargl128
ld: 0711-317 ERROR: Undefined symbol: .__truncl128
/*
* There are two forms of long double on AIX. The default
* form of long double is the same as a double - 64 bits. There
* is a 128-bit form available with some compilers. If that compiler
* defines __LONGDOUBLE128, then long doubles are 128-bit instead of
* 64-bit. Since the same library routine cannot be used for 128-bit
* and 64-bit values, the 128-bit routines are renamed and macros are
* used to manage the name spaces. It is not necessarily the case that
* all of the 128-bit versions are available, but the macros are defined
* intentionally since the 64-bit versions can provide incorrect results
* when long double values were expected. If 64-bit versions are required
* in 128-bit mode, then the code needs to invoke the double routines a
* rather than the long double routines.
*/
As the comment mentions, not all functions are available(!), but the functions
are redefined to prevent wrong results.
