Hi, I tried renamed libpsc.c to libpsc.cpp ( and .ccx) , no difference in the outcome, running ./configure fails and so does the ptxdist libpsc compile. Question , in a autotools library package are you only allowed either c file or c++ file ? dak@CNU35294ZR:/opt/PHYTEC_BSPs/BSP-Phytec-phyFLEX-i.MX6-PD13.2.4/local_src/libpsc$ ./configure configure: error: cannot find sources (libpsc.c) in . or .. ptxdist compile libpsc ---------------------- target: libpsc.compile ---------------------- make[1]: Entering directory '/opt/PHYTEC_BSPs/BSP-Phytec-phyFLEX-i.MX6-PD13.2.4/platform-phyFLEX-i.MX6/build-target/libpsc-build' make --no-print-directory all-am make[2]: *** No rule to make target 'libpsc.c', needed by 'liblibpsc_la-libpsc.lo'. Stop. make[1]: *** [Makefile:476: all] Error 2 make[1]: Leaving directory '/opt/PHYTEC_BSPs/BSP-Phytec-phyFLEX-i.MX6-PD13.2.4/platform-phyFLEX-i.MX6/build-target/libpsc-build' make: *** [/opt/lib/ptxdist-2019.03.1/rules/post/ptxd_make_world_compile.make:22: /opt/PHYTEC_BSPs/BSP-Phytec-phyFLEX-i.MX6-PD13.2.4/platform-phyFLEX-i.MX6/state/libpsc.compile] Error 2 dak@CNU35294ZR:/opt/PHYTEC_BSPs/BSP-Phytec-phyFLEX-i.MX6-PD13.2.4$ This email and any attachments may be confidential and/or legally privileged. It has been sent for the sole use of the intended recipient(s). If the reader of this message is not an intended recipient, you are hereby notified that any unauthorized review, use, disclosure, dissemination, distribution, or copying of this communication or any of its contents is strictly prohibited. If you are not the named recipient, or have otherwise received this communication in error, please delete it from your inbox, notify the sender immediately, and do not disclose the contents to any other person or use them for any purpose, or store them in any medium. Thank you for your cooperation.