Hi,

Denys Vlasenko wrote:

> and I theorize you just didn't clean up old headers, so
> libm_hidden_proto() is still present in them, thus remapping the names to
> __GI_xxxx.

no, I am using a buildroot-like compile environment provided by the Tuxbox
project where I rebuild everything (binutils, kernel headers, gcc...) from
scratch, I tried this again with latest uClibc SVN rev 25343 and Busybox
1.7.2 failed like before:

>   LINK    busybox_unstripped
> Trying libraries: crypt m
> Failed: powerpc-tuxbox-linux-uclibc-gcc -o
busybox_unstripped -Wl,-Map -Wl,busybox_unstripped.map -Wl,--warn-common 
-Wl,--sort-common -Wl,--gc-sections -Wl,--start-group
applets/built-in.o archival/lib.a archival/libunarchive/lib.a
console-tools/lib.a coreutils/lib.a coreutils/libcoreutils/lib.a
debianutils/lib.a e2fsprogs/lib.a editors/lib.a findutils/lib.a init/lib.a
ipsvd/lib.a libbb/lib.a libpwdgrp/lib.a loginutils/lib.a miscutils/lib.a
modutils/lib.a networking/lib.a networking/libiproute/lib.a
networking/udhcp/lib.a procps/lib.a runit/lib.a selinux/lib.a shell/lib.a
sysklogd/lib.a util-linux/lib.a archival/built-in.o
archival/libunarchive/built-in.o console-tools/built-in.o
coreutils/built-in.o coreutils/libcoreutils/built-in.o
debianutils/built-in.o e2fsprogs/built-in.o editors/built-in.o
findutils/built-in.o init/built-in.o ipsvd/built-in.o libbb/built-in.o
libpwdgrp/built-in.o loginutils/built-in.o miscutils/built-in.o
modutils/built-in.o networking/built-in.o networking/libiproute/built-in.o
networking/udhcp/built-in.o procps/built-in.o runit/built-in.o
selinux/built-in.o shell/built-in.o sysklogd/built-in.o
util-linux/built-in.o -Wl,--end-group -Wl,--start-group -Wl,--start-group 
-lcrypt -lm -Wl,--end-group -Wl,--end-group
> /root/tuxbox/work_uclibc/image/cdk/lib/gcc/powerpc-tuxbox-linux-uclibc/3.4.6/../../../../powerpc-tuxbox-linux-uclibc/lib/nof/libm.so:
undefined reference to `__GI___isnanl'
> /root/tuxbox/work_uclibc/image/cdk/lib/gcc/powerpc-tuxbox-linux-uclibc/3.4.6/../../../../powerpc-tuxbox-linux-uclibc/lib/nof/libm.so:
undefined reference to `__GI___isinfl'

> If it does not help, find out which object file contains
> references to __GI___isinfl. Say, it's a file.o.

The problem is that Busybox itself does neither use isnanl nor isinfl, it
only tests for libm, like you can see above - and here it fails.
DO_C99_MATH=y is activated in uClibc .config.

Btw, this bug reminds me of this bug:
https://bugs.busybox.net/show_bug.cgi?id=55

Greetings, rhabarber1848


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