Created attachment 1942201 [details] lcms-c99.patch In src/cmsio1.c, lcms calls the swab function without declaring it. This leads to build failures with strict C99 compilers which do not support implicit function declarations. The upstream Git history at https://github.com/mm2/Little-CMS for version 2 does not contain the swab function call at all (and no commit that removes it), so reporting this here for tracking purposes.