Add libmissing

This patch adds a libmissing library to mtd-utils, containing
implementations of functionality found in glibc but typically
missing from embedded C libraries such as uclibc ot musl.

For now, the library only contains stub implementations of
the backtrace*() family of functions.

Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Signed-off-by: Richard Weinberger <richard@nod.at>

1 files changed, 15 insertions, 0 deletions

diff --git a/include/libmissing.h b/include/libmissing.h
new file mode 100644
index 0000000..c765f6d
--- /dev/null
+++ b/include/libmissing.h
@@ -0,0 +1,15 @@
+#ifndef LIBMISSING_H
+#define LIBMISSING_H
+
+#ifdef HAVE_EXECINFO
+#include <execinfo.h>
+#endif
+
+#ifndef HAVE_EXECINFO
+int backtrace(void **buffer, int size);
+char **backtrace_symbols(void *const *buffer, int size);
+void backtrace_symbols_fd(void *const *buffer, int size, int fd);
+#endif
+
+#endif /* LIBMISSING_H */
+