From 7fdd4fcee1c6698daa8eb5f52017e768b0771503 Mon Sep 17 00:00:00 2001 From: Joseph Myers Date: Fri, 1 Sep 2023 15:20:47 +0000 Subject: [PATCH] config: Fix host -rdynamic detection for build != host != target [Merge from GCC commit 4d9bc81a5d8d884dee7a7781fa4c1577a6c9681a.] The GCC_ENABLE_PLUGINS configure logic for detecting whether -rdynamic is necessary and supported uses an appropriate objdump for $host binaries (running on $build) in cases where $host is $build or $target. However, it is missing such logic in the case where $host is neither $build nor $target, resulting in the compilers not being linked with -rdynamic and plugins not being usable with such a compiler. In fact $ac_cv_prog_OBJDUMP, as used when $build = $host, is always an objdump for $host binaries that runs on $build; that is, it's appropriate to use in this case as well. Tested in such a configuration that it does result in cc1 being linked with -rdynamic as expected. Also bootstrapped with no regressions for x86_64-pc-linux-gnu. config/ * gcc-plugin.m4 (GCC_ENABLE_PLUGINS): Use export_sym_check="$ac_cv_prog_OBJDUMP -T" also when host is not build or target. --- config/gcc-plugin.m4 | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/config/gcc-plugin.m4 b/config/gcc-plugin.m4 index c731a6fab38..c30cfdd8fad 100644 --- a/config/gcc-plugin.m4 +++ b/config/gcc-plugin.m4 @@ -49,7 +49,7 @@ AC_DEFUN([GCC_ENABLE_PLUGINS], elif test x$host = x$target; then export_sym_check="$gcc_cv_objdump -T" else - export_sym_check= + export_sym_check="$ac_cv_prog_OBJDUMP -T" fi ;; esac -- 2.30.2