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60f761c7e5
gcc/libstdc++-v3
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Hans-Peter Nilsson 60f761c7e5 libstdc++: Use GCC_TRY_COMPILE_OR_LINK for getentropy, arc4random 
Since r12-5056-g3439657b0286, there has been a regression in
test results; an additional 100 FAILs running the g++ and
libstdc++ testsuite on cris-elf, a newlib target.  The
failures are linker errors, not finding a definition for
getentropy.  It appears newlib has since 2017-12-03
declarations of getentropy and arc4random, and provides an
implementation of arc4random using getentropy, but provides no
definition of getentropy, not even a stub yielding ENOSYS.
This is similar to what it does for many other functions too.

While fixing newlib (like adding said stub) would likely help,
it still leaves older newlib releases hanging.  Thankfully,
the libstdc++ configury test can be improved to try linking
where possible; using the bespoke GCC_TRY_COMPILE_OR_LINK
instead of AC_TRY_COMPILE.  BTW, I see a lack of consistency;
some tests use AC_TRY_COMPILE and some GCC_TRY_COMPILE_OR_LINK
for no apparent reason, but this commit just amends
r12-5056-g3439657b0286.

libstdc++-v3:
	PR libstdc++/103166
	* acinclude.m4 (GLIBCXX_CHECK_GETENTROPY, GLIBCXX_CHECK_ARC4RANDOM):
	Use GCC_TRY_COMPILE_OR_LINK instead of AC_TRY_COMPILE.
	* configure: Regenerate.
2021-11-13 01:45:06 +01:00
..
config libstdc++: Print assertion messages to stderr [PR59675] 2021-11-12 12:23:10 +00:00
doc libstdc++: Deprecate std::unexpected and handler functions 2021-11-04 20:53:29 +00:00
include libstdc++: Print assertion messages to stderr [PR59675] 2021-11-12 12:23:10 +00:00
libsupc++ libstdc++: Deprecate std::unexpected and handler functions 2021-11-04 20:53:29 +00:00
po Update copyright years. 2021-01-04 10:26:59 +01:00
python libstdc++: Fix pretty printing of std::unique_ptr [PR103086] 2021-11-04 22:50:02 +00:00
scripts libstdc++: Improve generated man pages for libstdc++ 2021-10-21 22:24:57 +01:00
src libstdc++: Print assertion messages to stderr [PR59675] 2021-11-12 12:23:10 +00:00
testsuite libstdc++: Print assertion messages to stderr [PR59675] 2021-11-12 12:23:10 +00:00
acinclude.m4 libstdc++: Use GCC_TRY_COMPILE_OR_LINK for getentropy, arc4random 2021-11-13 01:45:06 +01:00
aclocal.m4
ChangeLog Daily bump. 2021-11-13 00:16:39 +00:00
ChangeLog-1998
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ChangeLog-2019
ChangeLog-2020 libstdc++: Fix typo in ChangeLog-2020 2021-01-13 11:02:13 +00:00
config.h.in libstdc++: Support getentropy and arc4random in std::random_device 2021-11-09 14:40:33 +00:00
configure libstdc++: Use GCC_TRY_COMPILE_OR_LINK for getentropy, arc4random 2021-11-13 01:45:06 +01:00
configure.ac libstdc++: Support getentropy and arc4random in std::random_device 2021-11-09 14:40:33 +00:00
configure.host Scope libstdc++ configuration for vxworks to all versions 2020-10-22 16:40:57 +00:00
crossconfig.m4 libstdc++: Check for TLS support on mingw cross-compilers 2021-09-15 09:49:33 +01:00
fragment.am libstdc++: Add C++ runtime support for new 128-bit long double format 2020-12-16 23:25:01 +00:00
linkage.m4
Makefile.am Update copyright years. 2021-01-04 10:26:59 +01:00
Makefile.in libstdc++: Add C++ runtime support for new 128-bit long double format 2020-12-16 23:25:01 +00:00
README

README 

file: libstdc++-v3/README

New users may wish to point their web browsers to the file
index.html in the 'doc/html' subdirectory.  It contains brief
building instructions and notes on how to configure the library in
interesting ways.