請教freebsd5與mysql

請教一下 當我安裝好ports 也編譯了 Makefile 內的語法

CONFIGURE_ARGS= --localstatedir=${DB_DIR} \
                --without-perl \
                --without-debug \
                --without-readline \
                --without-bench \
                --with-mit-threads=no \
                --with-libwrap \
                --with-low-memory \
                --with-comment='FreeBSD port: ${PKGNAME}' \
                --program-prefix='' \
                --with-innodb
                --with-charset=big5 \


可是當我下了 make all install  卻會出現以下的錯誤
"Makefile", line 43: if-less endif
"Makefile", line 43: Need an operator
make: fatal errors encountered -- cannot continue

第43行為
endif

43行及其之前的敘述為
CONFIGURE_ARGS= --localstatedir=${DB_DIR} \
                --without-perl \
                --without-debug \
                --without-readline \
                --without-bench \
                --with-mit-threads=no \
                --with-libwrap \
                --with-low-memory \
                --with-comment='FreeBSD port: ${PKGNAME}' \
                --program-prefix='' \
                --with-innodb
                --with-charset=big5 \
if ${MACHINE_ARCH} == "i386"
CONFIGURE_ARGS+=--enable-assembler --with-berkeley-db
endif

請教一下 我哪裡做錯了呢
謝謝

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