Flex needs both a C compiler for the build environment, as well as a native m4. (cherry picked from commit 81827c0084c1a69e41894a4d38b0c0b267eaff34)
Flex needs both a C compiler for the build environment, as well as a native m4. (cherry picked from commit 81827c0084c1a69e41894a4d38b0c0b267eaff34)