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commit db03874df9843ab98c4faeb658f04d17e6db83a6
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Author: Florian Weimer <fweimer@redhat.com>
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Date: Thu Oct 8 15:33:00 2020 +0200
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elf: Print the full name of the dynamic loader in the ld.so help message
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This requires defining a macro for the full path, matching the
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-Wl,--dynamic-link= arguments used for linking glibc programs,
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and ldd script.
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Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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diff --git a/elf/Makefile b/elf/Makefile
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index e5666e5bf7817c3c..bc96b8fd65e376cc 100644
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--- a/elf/Makefile
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+++ b/elf/Makefile
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@@ -641,7 +641,8 @@ libof-ldconfig = ldconfig
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CFLAGS-dl-cache.c += $(SYSCONF-FLAGS)
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CFLAGS-cache.c += $(SYSCONF-FLAGS)
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CFLAGS-rtld.c += $(SYSCONF-FLAGS)
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-CFLAGS-dl-usage.c += $(SYSCONF-FLAGS)
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+CFLAGS-dl-usage.c += $(SYSCONF-FLAGS) \
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+ -D'RTLD="$(rtlddir)/$(rtld-installed-name)"'
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cpp-srcs-left := $(all-rtld-routines:=.os)
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lib := rtld
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diff --git a/elf/dl-usage.c b/elf/dl-usage.c
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index 8c24c13770500df9..1003a435bfc2b39e 100644
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--- a/elf/dl-usage.c
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+++ b/elf/dl-usage.c
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@@ -76,6 +76,8 @@ setting environment variables (which would be inherited by subprocesses).\n\
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--argv0 STRING set argv[0] to STRING before running\n\
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--help display this help and exit\n\
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--version output version information and exit\n\
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+\n\
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+This program interpreter self-identifies as: " RTLD "\n\
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",
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argv0);
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_exit (EXIT_SUCCESS);
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