Hi, I want to clarify some things of the point of view of uClibc-ng support. There is support for following configurations for noMMU targets: ARM: - FLAT with Linuxthreads supported (for Qemu you need a Linux patch) - FDPIC with NPTL supported (NPTL works only on real hardware not in Qemu) - ELF with Thread support not working M68k: - FLAT with Linuxthreads supported - ELF with Thread support not working RISCV64: - FLAT without Thread support - ELF with Thread support not working RISCV32: - FLAT without Thread support, needs a small Linux Kernel patch SH2/J2: - FLAT with Linuxthreads supported Xtensa: - FLAT with Linuxthreads supported There are some obsolete architectures supported by uClibc-ng, but no longer supported by Linux: Blackfin: - FLAT with Linuxthreads supported - FDPIC H8300: - FLAT with Linuxthreads supported C6X: - DSBT LM32: - FLAT LTP requires NPTL to work, so the only testable platform is ARM with FDPIC right now. Unfortunately LTP 20230929 needs fork for some files: RANLIB libltp.a /home/wbx/arm/toolchain_st-stm32f746g_uclibc-ng_cortex_m7_soft_eabi_thumb_nommu/usr/lib/gcc/arm-openadk-uclinuxfdpiceabi/13.2.0/../../../../arm-openadk-uclinuxfdpiceabi/bin/ld: ../../lib/libltp.a(tst_res.o): in function `tst_fork': /home/wbx/arm/build_st-stm32f746g_uclibc-ng_cortex_m7_soft_eabi_thumb_nommu/w-ltp-20230929-1/ltp-full-20230929/lib/tst_res.c:430:(.text+0x952): undefined reference to `fork' /home/wbx/arm/toolchain_st-stm32f746g_uclibc-ng_cortex_m7_soft_eabi_thumb_nommu/usr/lib/gcc/arm-openadk-uclinuxfdpiceabi/13.2.0/../../../../arm-openadk-uclinuxfdpiceabi/bin/ld: ../../lib/libltp.a(tst_test.o): in function `fork_testrun': /home/wbx/arm/build_st-stm32f746g_uclibc-ng_cortex_m7_soft_eabi_thumb_nommu/w-ltp-20230929-1/ltp-full-20230929/lib/tst_test.c:1597:(.text+0xf4e): undefined reference to `fork' /home/wbx/arm/toolchain_st-stm32f746g_uclibc-ng_cortex_m7_soft_eabi_thumb_nommu/usr/lib/gcc/arm-openadk-uclinuxfdpiceabi/13.2.0/../../../../arm-openadk-uclinuxfdpiceabi/bin/ld: ../../lib/libltp.a(tst_test.o): in function `safe_fork': /home/wbx/arm/build_st-stm32f746g_uclibc-ng_cortex_m7_soft_eabi_thumb_nommu/w-ltp-20230929-1/ltp-full-20230929/lib/tst_test.c:435:(.text+0x345c): undefined reference to `fork' collect2: error: ld returned 1 exit status gmake[8]: *** [../../include/mk/rules.mk:45: test01] Error 1 gmake[7]: *** [../include/mk/generic_trunk_target.inc:108: all] Error 2 gmake[6]: *** [Makefile:94: lib-all] Error 2 gmake[5]: *** [/home/wbx/arm/mk/pkg-bottom.mk:141: /home/wbx/arm/build_st-stm32f746g_uclibc-ng_cortex_m7_soft_eabi_thumb_nommu/w-ltp-20230929-1/ltp-full-20230929/.build_done] Error 2 gmake[4]: *** [Makefile:61: ltp-compile] Error 2 gmake[3]: *** [mk/build.mk:221: package/compile] Error 2 gmake[2]: *** [/home/wbx/arm/mk/build.mk:176: world] Error 2 So there is really work to be done to make the existing code work on noMMU. best regards Waldemar
