Only used on Cygwin/MS-Windows at the moment.
@end defvar
+@defvar LT_SYS_LIBRARY_PATH
+Libtool has heuristics for the system search path for runtime-loaded
+libraries. If the guessed default does not match the setup of the host
+system, this variable can be used to modify that path list, as follows
+(@code{LT_SYS_LIBRARY_PATH} is a colon-delimited list like @code{PATH}):
+@itemize @bullet
+@item @code{path:}
+The heuristically determined paths will be appened after the trailing
+colon;
+@item @code{:path}
+The heuristically determined paths will be prepended before the leading
+colon;
+@item @code{path::path}
+The heuristically determined paths will be inserted between the double
+colons;
+@item @code{path}
+With no dangling colons, the heuristically determined paths will be
+ignored entirely.
+@end itemize
+@end defvar
+
With 1.3 era libtool, if you wanted to know any details of what
libtool had discovered about your architecture and environment, you
had to run the script with @option{--config} and grep through the
and all recent releases of XEmacs.
@item
-When building on some GNU/Linux systems for multilib targets
-@command{libtool} sometimes guesses the wrong paths that the linker
-and dynamic linker search by default. If this occurs, you may override
-libtool's guesses at @command{configure} time by setting the
-@command{autoconf} cache variables
-@code{lt_cv_sys_lib_search_path_spec} and
-@code{lt_cv_sys_lib_dlsearch_path_spec} respectively to the correct search
-paths.
+When building on some GNU/Linux systems for multilib targets @command{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
+@code{LT_SYS_LIBRARY_PATH} environment variable to adjust. Otherwise, at
+@command{configure} time you may override libtool's guesses by setting the
+@command{autoconf} cache variables @code{lt_cv_sys_lib_search_path_spec} and
+@code{lt_cv_sys_lib_dlsearch_path_spec} respectively.
@end itemize
_LT_LIBTOOL_TAG_VARS
# ### END LIBTOOL CONFIG
+_LT_EOF
+
+ cat <<'_LT_EOF' >> "$cfgfile"
+## -------------------------------------- ##
+## Shell functions shared with configure. ##
+## -------------------------------------- ##
+
+_LT_PREPARE_MUNGE_PATH_LIST
+
_LT_EOF
case $host_os in
])# _LT_CMD_STRIPLIB
+# _LT_PREPARE_MUNGE_PATH_LIST
+# ---------------------------
+# Make sure func_munge_path_list() is defined correctly.
+m4_defun([_LT_PREPARE_MUNGE_PATH_LIST],
+[[# func_munge_path_list VARIABLE PATH
+# -----------------------------------
+# VARIABLE is name of variable containing _space_ separated list of
+# directories to be munged by the contents of PATH, which is string
+# having a format:
+# "DIR[:DIR]:"
+# string "DIR[ DIR]" will be prepended to VARIABLE
+# ":DIR[:DIR]"
+# string "DIR[ DIR]" will be appended to VARIABLE
+# "DIRP[:DIRP]::[DIRA:]DIRA"
+# string "DIRP[ DIRP]" will be prepended to VARIABLE and string
+# "DIRA[ DIRA]" will be appended to VARIABLE
+# "DIR[:DIR]"
+# VARIABLE will be replaced by "DIR[ DIR]"
+func_munge_path_list ()
+{
+ case x@S|@2 in
+ x)
+ ;;
+ *:)
+ eval @S|@1=\"`$ECHO @S|@2 | $SED 's/:/ /g'` \$@S|@1\"
+ ;;
+ x:*)
+ eval @S|@1=\"\@S|@@S|@1 `$ECHO @S|@2 | $SED 's/:/ /g'`\"
+ ;;
+ *::*)
+ eval @S|@1=\"\@S|@@S|@1\ `$ECHO @S|@2 | $SED -e 's/.*:://' -e 's/:/ /g'`\"
+ eval @S|@1=\"`$ECHO @S|@2 | $SED -e 's/::.*//' -e 's/:/ /g'`\ \@S|@@S|@1\"
+ ;;
+ *)
+ eval @S|@1=\"`$ECHO @S|@2 | $SED 's/:/ /g'`\"
+ ;;
+ esac
+}
+]])# _LT_PREPARE_PATH_LIST
+
+
# _LT_SYS_DYNAMIC_LINKER([TAG])
# -----------------------------
# PORTME Fill in your ld.so characteristics
m4_require([_LT_DECL_OBJDUMP])dnl
m4_require([_LT_DECL_SED])dnl
m4_require([_LT_CHECK_SHELL_FEATURES])dnl
+m4_require([_LT_PREPARE_MUNGE_PATH_LIST])dnl
AC_MSG_CHECKING([dynamic linker characteristics])
m4_if([$1],
[], [
# flags to be left without arguments
need_version=unknown
+AC_ARG_VAR([LT_SYS_LIBRARY_PATH],
+[User-defined run-time library search path.])
+
case $host_os in
aix3*)
version_type=linux # correct to gnu/linux during the next big refactor
# before this can be enabled.
hardcode_into_libs=yes
- # Append ld.so.conf contents to the search path
+ # Ideally, we could use ldconfig to report *all* directores which are
+ # searched for libraries, however this is still not possible. Aside from not
+ # being certain /sbin/ldconfig is available, command
+ # 'ldconfig -N -X -v | grep ^/' on 64bit Fedora does not report /usr/lib64,
+ # even though it is searched at run-time. Try to do the best guess by
+ # appending ld.so.conf contents (and includes) to the search path.
if test -f /etc/ld.so.conf; then
lt_ld_extra=`awk '/^include / { system(sprintf("cd /etc; cat %s 2>/dev/null", \[$]2)); skip = 1; } { if (!skip) print \[$]0; skip = 0; }' < /etc/ld.so.conf | $SED -e 's/#.*//;/^[ ]*hwcap[ ]/d;s/[:, ]/ /g;s/=[^=]*$//;s/=[^= ]* / /g;s/"//g;/^$/d' | tr '\n' ' '`
sys_lib_dlsearch_path_spec="/lib /usr/lib $lt_ld_extra"
fi
- # Ideally we could use /sbin/ldconfig to report what directories are
- # searched, but (aside from not being certain /sbin/ldconfig is
- # available) Fedora on 64bit does not report /usr/lib64, even though
- # it is searched at run-time.
- case $host_cpu in
- # match at least x86_64, ia64, powerpc64*, s390x (add other glibc/ELF 64bit cpus here):
- *64*|s390x) sys_lib_dlsearch_path_spec="/lib64 /usr/lib64 $sys_lib_dlsearch_path_spec" ;;
- esac
# We used to test for /lib/ld.so.1 and disable shared libraries on
# powerpc, because MkLinux only supported shared libraries with the
if test set = "${lt_cv_sys_lib_search_path_spec+set}"; then
sys_lib_search_path_spec=$lt_cv_sys_lib_search_path_spec
fi
+
+func_munge_path_list sys_lib_dlsearch_path_spec "$LT_SYS_LIBRARY_PATH"
+
if test set = "${lt_cv_sys_lib_dlsearch_path_spec+set}"; then
sys_lib_dlsearch_path_spec=$lt_cv_sys_lib_dlsearch_path_spec
fi
projects / thirdparty / libtool.git / commitdiff
