Implementation notes: amd64, river, crypto_dh/ed521gs

Computer: river
Architecture: amd64
CPU ID: GenuineIntel-000206a7-bfebfbff
SUPERCOP version: 20160806
Operation: crypto_dh
Primitive: ed521gs

Compiler output

Implementation: crypto_dh/ed521gs/ref
Compiler: gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv
dh.c: dh.c:18: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'type128'
dh.c: dh.c: In function 'gmuli':
dh.c: dh.c:154: error: 'type128' undeclared (first use in this function)
dh.c: dh.c:154: error: (Each undeclared identifier is reported only once
dh.c: dh.c:154: error: for each function it appears in.)
dh.c: dh.c:154: error: expected ';' before 't'
dh.c: dh.c:156: error: 't' undeclared (first use in this function)
dh.c: dh.c:156: error: expected ';' before 'w'
dh.c: dh.c:159: error: expected ';' before 'w'
dh.c: dh.c:162: error: expected ';' before 'w'
dh.c: dh.c:165: error: expected ';' before 'w'
dh.c: dh.c:168: error: expected ';' before 'w'
dh.c: dh.c:171: error: expected ';' before 'w'
dh.c: dh.c:174: error: expected ';' before 'w'
dh.c: dh.c:177: error: expected ';' before 'w'
dh.c: dh.c:180: error: expected ';' before 'w'
dh.c: dh.c: In function 'gsqr':
dh.c: dh.c:190: error: 'type128' undeclared (first use in this function)
dh.c: dh.c:190: error: expected ';' before 't0'
dh.c: dh.c:191: error: 't1' undeclared (first use in this function)
dh.c: dh.c:191: error: expected ')' before 'x'
dh.c: dh.c:191: error: expected ';' before 'x'
dh.c: dh.c:192: error: 't0' undeclared (first use in this function)
dh.c: dh.c:193: error: 't2' undeclared (first use in this function)
dh.c: dh.c:193: error: expected ')' before 'x'
dh.c: ...

Number of similar (compiler,implementation) pairs: 4, namely:
CompilerImplementations
gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv ref
gcc -march=native -mtune=native -O3 -fomit-frame-pointer -fwrapv ref
gcc -march=native -mtune=native -O -fomit-frame-pointer -fwrapv ref
gcc -march=native -mtune=native -Os -fomit-frame-pointer -fwrapv ref