4 You currently need GNU make to build the Libtool package itself.
7 On AIX there are two different styles of shared linking, one in which symbols
8 are bound at link-time and one in which symbols are bound at runtime only,
9 similar to ELF@. In case of doubt use @code{LDFLAGS=-Wl,-brtl} for the latter style.
12 On AIX, native tools are to be preferred over binutils; especially for C++ code,
13 if using the AIX Toolbox GCC 4.0 and binutils, configure with
14 @code{AR=/usr/bin/ar LD=/usr/bin/ld NM='/usr/bin/nm -B'}.
17 On AIX, the @command{/bin/sh} is very slow due to its inefficient handling
18 of here-documents. A modern shell is preferable:
20 CONFIG_SHELL=/bin/bash; export $CONFIG_SHELL
21 $CONFIG_SHELL ./configure [...]
25 For C++ code with templates, it may be necessary to specify the way the compiler
26 will generate the instantiations. For Portland pgCC version5, use
27 @code{CXX='pgCC --one_instantiation_per_object'} and avoid parallel @command{make}.
30 On Darwin, for C++ code with templates you need two level shared libraries.
31 Libtool builds these by default if @env{MACOSX_DEPLOYMENT_TARGET} is set to
32 10.3 or later at @command{configure} time. See @url{rdar://problem/4135857}
33 for more information on this issue.
36 @c FreeBSD @command{make} does not conform to @sc{posix} in its handling
37 @c of file modification times, which causes it to loop while building libtool.
38 @c Consider using a different @command{such} as GNU make instead.
41 The default shell on UNICOS 9, a ksh 88e variant, is too buggy to
42 correctly execute the libtool script. Users are advised to install a
43 modern shell such as GNU bash.
46 Some HP-UX @command{sed} programs are horribly broken, and cannot handle
47 libtool's requirements, so users may report unusual problems. There
48 is no workaround except to install a working @command{sed} (such as GNU sed)
52 The vendor-distributed NCR MP-RAS @command{cc} programs emits copyright
53 on standard error that confuse tests on size of @file{conftest.err}. The
54 workaround is to specify @env{CC} when run configure with
55 @code{CC='cc -Hnocopyr'}.
58 Any earlier DG/UX system with ELF executables, such as R3.10 or
59 R4.10, is also likely to work, but hasn't been explicitly tested.
62 On Reliant Unix libtool has only been tested with the Siemens C-compiler
63 and an old version of @command{gcc} provided by Marco Walther.
66 @file{libtool.m4}, @file{ltdl.m4} and the @file{configure.ac} files are marked
67 to use autoconf-mode, which is distributed with GNU Emacs 21, Autoconf itself,
68 and all recent releases of XEmacs.
71 When building on some GNU/Linux systems for multilib targets
72 @command{libtool} sometimes guesses the wrong paths that the linker
73 and dynamic linker search by default. If this occurs, you may override
74 libtool's guesses at @command{configure} time by setting the
75 @command{autoconf} cache variables
76 @code{lt_cv_sys_lib_search_path_spec} and
77 @code{lt_cv_sys_lib_dlsearch_path_spec} respectively to the correct search