> On 19 Feb 2025, at 18:51, Fabio Estevam via lists.openembedded.org > <festevam=gmail....@lists.openembedded.org> wrote: > +Subject: [PATCH v4 mtd-utils 3/4] configure.ac: Add a check for execinfo and > backtrace > + > +musl relies on an external execinfo library to provide backtrace > +functionality. If musl cannot link to libexecinfo, the following link > +error happens: > + > +| > /work/festevam/oe/poky/build/tmp/work/core2-64-poky-linux-musl/mtd-utils/2.3.0/recipe-sysroot-native/usr/bin/x86_64-poky-linux-musl/../../libexec/x86_64-poky-linux-musl/gcc/x86_64-poky-linux-musl/14.2.0/ld: > ubifs-utils/libubifs/mkfs_ubifs-io.o: in function `dump_stack': > +| /usr/src/debug/mtd-utils/2.3.0/ubifs-utils/common/defs.h:71:(.text+0x25): > undefined reference to `backtrace' > +.... > +| collect2: error: ld returned 1 exit status > +| make: *** [Makefile:2959: mkfs.ubifs] Error 1 > + > +Fix the problem by checking for backtrace support in libc first and if not > +found, then check for backtrace support in the external libexecinfo.
mtd-utils already has a stub implementation of backtrace() for when a libc with execinfo.h is being used, the unifs-utils just need to actually use it. Alternatively, if the answer is to rely on an external libexecinfo, then the stubs should be removed. I’ve just sent a patch upstream that uses the stub, let’s discuss there what direction is best so we don’t end up carrying surplus patches. Ross
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