jpegoptim @1.5.6 build error: error: ‘for’ loop initial declaration used outside C99 mode

[barracuda156]

--->  Building jpegoptim
Executing:  cd "/opt/local/var/macports/build/jpegoptim-85a7360d/work/jpegoptim-1.5.6" && /usr/bin/make -j2 -w all 
make: Entering directory `/opt/local/var/macports/build/jpegoptim-85a7360d/work/jpegoptim-1.5.6'
/usr/bin/gcc-4.2 -pipe -Os -arch ppc -isystem/opt/local/include/LegacySupport -I/opt/local/include -DHAVE_CONFIG_H   -c -o jpegoptim.o jpegoptim.c
/usr/bin/gcc-4.2 -pipe -Os -arch ppc -isystem/opt/local/include/LegacySupport -I/opt/local/include -DHAVE_CONFIG_H   -c -o jpegdest.o jpegdest.c
jpegoptim.c: In function ‘free_line_buf’:
jpegoptim.c:206: error: ‘for’ loop initial declaration used outside C99 mode
jpegoptim.c: In function ‘optimize’:
jpegoptim.c:738: error: ‘for’ loop initial declaration used outside C99 mode
jpegoptim.c:780: error: ‘for’ loop initial declaration used outside C99 mode
jpegoptim.c: In function ‘main’:
jpegoptim.c:1366: error: ‘for’ loop initial declaration used outside C99 mode
/usr/bin/gcc-4.2 -pipe -Os -arch ppc -isystem/opt/local/include/LegacySupport -I/opt/local/include -DHAVE_CONFIG_H   -c -o jpegsrc.o jpegsrc.c
make: *** [jpegoptim.o] Error 1
make: *** Waiting for unfinished jobs....