Re: dlopen man page example fails for x86_64 (release 4.12), OK for 32-bit target
From: Mats Wichmann <hidden>
Date: 2017-08-23 14:57:30
Possibly related (same subject, not in this thread)
- 2017-08-23 · Re: dlopen man page example fails for x86_64 (release 4.12), OK for 32-bit target · Michael Kerrisk (man-pages) <hidden>
- 2017-08-23 · Re: dlopen man page example fails for x86_64 (release 4.12), OK for 32-bit target · Mats Wichmann <hidden>
- 2017-08-22 · Re: dlopen man page example fails for x86_64 (release 4.12), OK for 32-bit target · Michael Kerrisk (man-pages) <hidden>
On 08/23/2017 08:11 AM, Mats Wichmann wrote:
On 08/22/2017 05:11 PM, Michael Kerrisk (man-pages) wrote:quoted
David, On 22 August 2017 at 04:53, David C. Rankin [off-list ref] wrote:quoted
All, The man 3 dlopen example needs updating to run on x86_64. It will run fine as a 32-bit compile (with -m32), but fails without it, e.g. $ gcc -Wall -Wextra -pedantic -Wshadow -std=gnu11 -Ofast -ldl -o bin/dlopen_man_ex dlopen_man_ex.c $ ./bin/dlopen_man_ex /usr/lib/libm.so: invalid ELF headerThis sounds like you're picking up the linker script, which is not an ELF file, but rather link-time instructions - you can't dlopen that. If the "magic" in /usr/include/gnu is working, you should be getting an soname line "libc.so.6" plugged in, not "libc.so".
of course, libm rather than libc. sigh. -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html