build: make sure asm gets built with -DPIC
Fixes issue openwrt/packages#14921, whereby inline ASM wasn't getting
built as PIC; look at gmp-6.2.1/mpn/x86/pentium/popcount.asm for
example:
ifdef(`PIC',`
...
for a routine that exists in both PIC and non-PIC versions.
Make sure that wherever $(FPIC) gets passed as a variable expansion
that it gets quoted where necessary (such as setting environment
variables in shell commands).
Signed-off-by: Philip Prindeville <[email protected]>
Philip Prindeville