libstdc++: use -D_GNU_SOURCE when building libbacktrace
commit2b64e4a54042fb8f75f1c1429eb1c13afb9fa118
authorIan Lance Taylor <iant@golang.org>
Mon, 6 Nov 2023 23:09:18 +0000 (6 15:09 -0800)
committerIan Lance Taylor <iant@golang.org>
Mon, 6 Nov 2023 23:11:43 +0000 (6 15:11 -0800)
treee9638beccba5e169b061080f90aadbd77aa679ca
parent471fb6ee435034c6635576fb92c325420f007804
libstdc++: use -D_GNU_SOURCE when building libbacktrace

PR libbacktrace/111315
PR libbacktrace/112263
* acinclude.m4: Set -D_GNU_SOURCE in BACKTRACE_CPPFLAGS and when
grepping link.h for dl_iterate_phdr.
* configure: Regenerate.
libstdc++-v3/acinclude.m4
libstdc++-v3/configure