On 02.01.22 23:58, Thomas Koenig wrote:
Hi Michael,
If you are building libraries that contain modules with multiple long
double
types, you must use the '-mno-gnu-attribute'. We also use the
'-Wno-psabi'
option, which silences the warning that you are switching long double
types (if
glibc is not 2.34 or newer). We may need to tweak -Wno-psabi for use
with
Fortran.
I am now at the point where the object files are also compiled correctly
for the gfortran specifics:
0000000000000000 <_gfortran_specific__abs_r17>:
0: 09 00 43 f4 lxv vs34,0(r3)
4: 48 16 40 fc xsabsqp v2,v2
8: 20 00 80 4e blr
However, the linker complains, as you said it would, about the different
formats:
/opt/at15.0/bin/ld: .libs/maxloc0_4_r16.o uses IBM long double,
.libs/_abs_r17.o uses IEEE long double
/opt/at15.0/bin/ld: failed to merge target specific data of file
.libs/_abs_r17.o
I know next to nothing about libtool, so I do not know how to
add the flags so the linker can find them.
Any pointers?
One additional point. The linker does not understand
-mno-gnu-attribute:
$ /opt/at15.0/bin/ld -mno-gnu-attribute
/opt/at15.0/bin/ld: unrecognised emulation mode: no-gnu-attribute
Supported emulations: elf64lppc elf32lppc elf32lppclinux elf32lppcsim
elf64ppc elf32ppc elf32ppclinux elf32ppcsim
So, waiting for info to proceed.
Best regards
Thomas
