The build currently fails when older netpbm version are still
installed in the build environment e.g. when upgrading from 10.35.98
to 10.80.00 the build fails with
ppmtompeg.o: In function `main':
ppmtompeg.c:(.text+0x9a5): undefined reference to `pm_strfree'
ppmtompeg.o: In function `getUserFrameFile':
ppmtompeg.c:(.text+0xcb1): undefined reference to `pm_asprintf'
ppmtompeg.c:(.text+0xcfb): undefined reference to `pm_strfree'
ppmtompeg.c:(.text+0xd04): undefined reference to `pm_strfree'
- Use explicit paths when linking with libnetpbm
- Remove UPDATING entry that previously recommended deinstalling
netpbm first when using portmaster/portupgrade
PR: 223724