On 27/06/2017 03:08, JonY wrote:
On 06/26/2017 10:16 AM, Marco Atzeri wrote:
Jon,
are you building the compilers on cygwin or cross compiling ?
I was trying to test the patch for
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47030
as it is blocking PETSC porting,
but I was unable to build 6.3.0-1 from your
source package.
In file included from
/cygdrive/e/cyg_pub/devel/gcc/gcc-6.3.0-1.src/gcc-6.3.0-1.
x86_64/src/gcc-6.3.0/gcc/rtl.h:31:0,
from
/cygdrive/e/cyg_pub/devel/gcc/gcc-6.3.0-1.src/gcc-6.3.0-1.
x86_64/src/gcc-6.3.0/gcc/genopinit.c:25:
/cygdrive/e/cyg_pub/devel/gcc/gcc-6.3.0-1.src/gcc-6.3.0-1.x86_64/src/gcc-6.3.0/g
cc/real.h:36:35: warning: division by zero [-Wdiv-by-zero]
#define SIGSZ (SIGNIFICAND_BITS / HOST_BITS_PER_LONG)
/cygdrive/e/cyg_pub/devel/gcc/gcc-6.3.0-1.src/gcc-6.3.0-1.x86_64/src/gcc-6.3.0/g
cc/real.h:49:21: note: in expansion of macro ‘SIGSZ’
unsigned long sig[SIGSZ];
On Cygwin itself, shouldn't that be 32bit and 64bit respectively for Cygwin?
In theory
gcc/real.h:#define SIGNIFICAND_BITS (128 + HOST_BITS_PER_LONG)
gcc/hwint.h:#define HOST_BITS_PER_LONG (CHAR_BIT * SIZEOF_LONG)
but I do not understand why SIGSZ is wrong defined.
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