- Unbreak the build on sparc64: gcc was generating assembler code that invoked FdTOx (convert floating point to 64-bit integer) instruction with odd register number as the second argument, while apparently[*] an even number is required:
fdtox %f10, %f15
It caused ``Illegal operands'' error when compiling `draw_symbols.c':
{standard input}: Assembler messages:
{standard input}:2686: Error: Illegal operands
{standard input}:2695: Error: Illegal operands
{standard input}:2835: Error: Illegal operands
{standard input}:2844: Error: Illegal operands
{standard input}:2854: Error: Illegal operands
{standard input}:2864: Error: Illegal operands
Fix the build by forcing -O0 when compiling this file on sparc64.
- Remove OPTCFLAGS option which enabled "optimized" CFLAGS ``-O2 -pipe'': these are our default CFLAGS for a long time