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libbacktrace: check for sys/link.h

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QNX uses sys/link.h rather than link.h for dl_iterate_phdr

Fixes #86

	* configure.ac: Check for sys/link.h.  Use either link.h or
	sys/link.h when checking for dl_iterate_phdr.
	* elf.c: Include sys/link.h if available.
	* configure, config.h.in: Regenerate.
This commit is contained in:
Ian Lance Taylor
2022-07-08 10:28:24 -07:00
parent 7409767403
commit 8602fda64e
4 changed files with 27 additions and 10 deletions
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10
configure.ac
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@@ -325,13 +325,17 @@ fi
AC_SUBST(BACKTRACE_USES_MALLOC)
# Check for dl_iterate_phdr.
AC_CHECK_HEADERS(link.h)
if test "$ac_cv_header_link_h" = "no"; then
AC_CHECK_HEADERS(link.h sys/link.h)
if test "$ac_cv_header_link_h" = "no" -a "$ac_cv_header_sys_link_h" = "no"; then
have_dl_iterate_phdr=no
else
if test -n "${with_target_subdir}"; then
link_h=link.h
if test "$ac_cv_header_link_h" = "no"; then
link_h=sys/link.h
fi
# When built as a GCC target library, we can't do a link test.
AC_EGREP_HEADER([dl_iterate_phdr], [link.h], [have_dl_iterate_phdr=yes],
AC_EGREP_HEADER([dl_iterate_phdr], [$link_h], [have_dl_iterate_phdr=yes],
[have_dl_iterate_phdr=no])
case "${host}" in
*-*-solaris2.10*)