Opus trunk/1.1 fails to build - 'export' is a GNU make-ism

Opus trunk/1.1 has had someregressions over 1.0.x and fails to build..

checking for C99 variable-size arrays... yes checking for cos in -lm... (cached) yes /home/ports/pobj/opus-1.1/opus-1.1/configure[12816]: ${inline_optimization:0:3}": bad substitution

AM_CONDITIONAL([OPUS_ARM_INLINE_ASM], [test x"${inline_optimization:0:3}" = x"ARM"]) AM_CONDITIONAL([OPUS_ARM_EXTERNAL_ASM], [test x"${asm_optimization:0:3}" = x"ARM"])

*** Parse error in /home/ports/pobj/opus-1.1/build-amd64: Need an operator in 'yes' (Makefile:2756)

Provide the full test output for failed tests when using the parallel

test suite (which is enabled by default with automake 1.13+).

export VERBOSE = yes