https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94200
Bug ID: 94200
Summary: -mabi=ibmlongdouble and -mlong-double-128 produces
error
Product: gcc
Version: 7.5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: murphyp at linux dot vnet.ibm.com
Target Milestone: ---
Target: powerpc64le
When compiling an empty file with:
`touch foo.c; gcc -mabi=ibmlongdouble -mlong-double-128 foo.c`
produces the following:
gcc: warning: using IBM extended precision long double
cc1: warning: using IBM extended precision long double
cc1: error: ‘-mabi=ibmlongdouble’ requires ‘-mlong-double-128’
Notably, removing the option -mlong-double-128 does not trigger the above.
This was fixed in GCC 8, and does not happen with GCC 7.4.0
