I have since figured out how to do this by adding -Wl, --verbose, and it
shows the library that is being found is the right one, under /lib.
I also have checked that this file contains the required symbols:
readelf -Ws libpthread.so | grep atfork 62: 0 FUNC
GLOBAL DEFAULT
> The error is not about whether you have definitions in your header
> files; the error is about the linker being unable to find a definition
> for `pthread_atfork` in whatever libraries you're linking against.
> I'd check whether your LDFLAGS specified to `make` are actually
> getting through to
EDIT: I found it in /lib/libpthread-2.8.so, and it does contain
a reference to that function:
"readelf -Ws libpthread-2.8.so | grep atfork":
62: 0 FUNC GLOBAL DEFAULT UND
__register_atfork@GLIBC_2.4 (4)
218: b46c 24 FUNC GLOBAL DEFAULT 12
I forgot to say that -lpthread is in the linker arguments, and near the
end as one would expect.
The full linker commandline is:
arm-unknown-linux-gnueabi-gcc --sysroot=/home/wmt/nas-sysroot -shared
-Wl,--gc-sections -Wl,-z,defs -Wl,-soname -Wl,libsoftokn3.so
On Thu, Sep 5, 2019 at 8:56 AM Hamish MB wrote:
> The build gets a fair way, but eventually fails with:
>
> Linux2.6_arm_glibc_PTH_DBG.OBJ/pkcs11.o: In function `nsc_CommonInitialize':
> /home/wmt/Downloads/nss-3.25.1/nss/lib/softoken/pkcs11.c:3022: undefined
> reference to `pthread_atfork'
>
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