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• You currently need GNU make to build the Libtool package itself.
• On AIX there are two different styles of shared linking, one where
symbols are bound at link-time and one where symbols are bound at
runtime only, similar to ELF. In case of doubt use
‘LDFLAGS=-Wl,-brtl’ for the latter style.
• On AIX, native tools are to be preferred over binutils; especially
for C++ code, if using the AIX Toolbox GCC 4.0 and binutils,
configure with ‘AR=/usr/bin/ar LD=/usr/bin/ld NM='/usr/bin/nm -B'’.
• On AIX, the ‘/bin/sh’ is very slow due to its inefficient handling
of here-documents. A modern shell is preferable:
CONFIG_SHELL=/bin/bash; export $CONFIG_SHELL
$CONFIG_SHELL ./configure [...]
• For C++ code with templates, it may be necessary to specify the way
the compiler will generate the instantiations. For Portland pgCC
version5, use ‘CXX='pgCC --one_instantiation_per_object'’ and avoid
parallel ‘make’.
• For C++ code, it may be necessary to specify a library if it is a
dependency of a link/compile flag. For example in GNU G++, if you
want to use ‘-fsanitize=address’ you need to specify the ‘-lasan’
library, like so: ‘g++ -o libx.la -fsanitize=address -lasan -rpath
[...]’.
• On Darwin, for C++ code with templates you need two level shared
libraries. Libtool builds these by default if
‘MACOSX_DEPLOYMENT_TARGET’ is set to 10.3 or later at ‘configure’
time. See <rdar://problem/4135857> for more information on this
issue.
• The default shell on UNICOS 9, a ksh 88e variant, is too buggy to
correctly execute the libtool script. Users are advised to install
a modern shell such as GNU bash.
• Some HP-UX ‘sed’ programs are horribly broken, and cannot handle
libtool's requirements, so users may report unusual problems.
There is no workaround except to install a working ‘sed’ (such as
GNU sed) on these systems.
• The vendor-distributed NCR MP-RAS ‘cc’ programs emits copyright on
standard error that confuse tests on size of ‘conftest.err’. The
workaround is to specify ‘CC’ when run configure with ‘CC='cc
-Hnocopyr'’.
• Any earlier DG/UX system with ELF executables, such as R3.10 or
R4.10, is also likely to work, but hasn't been explicitly tested.
• On Reliant Unix libtool has only been tested with the Siemens
C-compiler and an old version of ‘gcc’ provided by Marco Walther.
• ‘libtool.m4’, ‘ltdl.m4’ and the ‘configure.ac’ files are marked to
use autoconf-mode, which is distributed with GNU Emacs 21, Autoconf
itself, and all recent releases of XEmacs.
• When building on some GNU/Linux systems for multilib targets
‘libtool’ sometimes guesses the wrong paths that the linker and
dynamic linker search by default. If this occurs for the dynamic
library path, you may use the ‘LT_SYS_LIBRARY_PATH’ environment
variable to adjust. Otherwise, at ‘configure’ time you may
override libtool's guesses by setting the ‘autoconf’ cache
variables ‘lt_cv_sys_lib_search_path_spec’ and
‘lt_cv_sys_lib_dlsearch_path_spec’ respectively.
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