https://git.savannah.gnu.org/gitweb/?p=gnulib.git;a=commitdiff;h=cca32830b57e91f837c01d15b8732f23ff97fc36
Upstream fix
** Changed in: libidn (Ubuntu)
Status: New => Fix Released
** Changed in: libunistring (Ubuntu)
Status: New => Fix Released
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gcc u.c -Wl,--no-as-needed -lm; ./a.out; echo $?
0
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https://bugs.launchpad.net/bugs/1340250
Title:
"#pragma weak" symbol is 0 even when defined
Status in binutils
Wl,--no-as-needed works, while adding a manual "-lpthread" doesn't,
because the library doesn't get linked to the program. Reason is
probably that weak symbols are not added by the linker
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the Ubuntu gcc (as well as the OpenSuse gcc) sets ---as-needed as the
default, so your configure test fails, making wrong assumptions. So
better build your configure test with -Wl,--no-as-needed.
** Changed in: gcc-defaults (Ubuntu)
Importance: High => Undecided
** Changed in: gcc-defaults
** Also affects: binutils (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1340250
Title:
"#pragma weak" symbol is 0 even when
https://lists.gnu.org/archive/html/bug-gnulib/2014-07/msg00061.html
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https://bugs.launchpad.net/bugs/1340250
Title:
"#pragma weak" symbol is 0 even when defined
this seems to be the reason for libunistring and libidn failures
** Changed in: gcc-defaults (Ubuntu)
Status: New => Confirmed
** Changed in: gcc-defaults (Ubuntu)
Importance: Undecided => High
** Also affects: libunistring (Ubuntu)
Importance: Undecided
Status: New
** Also
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