* Lists of exported symbols should be stored in the pseudo library
so that the size of lt_preloaded_symbols can be reduced.
-* The definitions for AC_LTDL_SHLIBEXT and AC_LTDL_SHLIBPATH should not
-rely on the output of ./libtool --config. This involves moving the code
-which sets the variables library_names_spec and shlibpath_var from
-ltconfig.in to libtool.m4, and AC_REQUIRING the newly moved macros in
-the respective ltdl.m4 macros.
-
In the future:
**************
+* The definitions for AC_LTDL_SHLIBEXT, AC_LTDL_SHLIBPATH and
+AC_LTDL_SYSSEARCHPATH should not rely on the _LT_AC_LTCONFIG_HACK
+macro. This involves moving the code which sets the variables
+library_names_spec, shlibpath_var and sys_lib_dlsearch_path_spec from
+into a separate macro, and AC_REQUIRING the newly extracted macro in the
+respective ltdl.m4 macros.
+
* Godmar Back writes:
libltdl uses such stdio functions as fopen, fgets, feof, fclose, and others.
These functions are not async-signal-safe. While this does not make
# serial 1 AC_LIB_LTDL
+# AC_LIB_LTDL
+# -----------
AC_DEFUN(AC_LIB_LTDL,
[AC_PREREQ(2.13)dnl
AC_REQUIRE([AC_PROG_CC])dnl
AC_REQUIRE([AC_C_CONST])dnl
AC_REQUIRE([AC_C_INLINE])dnl
-dnl AC_LIB_LTDL must perform all the checks necessary for compilation
-dnl of the ltdl objects -- including compiler checks (above) and header
-dnl checks (below).
+# Perform all the checks necessary for compilation of the ltdl objects
+# -- including compiler checks (above) and header checks (below).
AC_REQUIRE([AC_HEADER_STDC])dnl
AC_CHECK_HEADERS(malloc.h memory.h stdlib.h stdio.h ctype.h dlfcn.h dl.h dld.h)
AC_REQUIRE([AC_LTDL_DLPREOPEN])dnl
AC_REQUIRE([AC_LTDL_DLLIB])dnl
AC_REQUIRE([AC_LTDL_SYMBOL_USCORE])dnl
-])
+])# AC_LIB_LTDL
+# AC_LTDL_ENABLE_INSTALL
+# ----------------------
AC_DEFUN(AC_LTDL_ENABLE_INSTALL,
[AC_ARG_ENABLE(ltdl-install,
[ --enable-ltdl-install install libltdl])
AM_CONDITIONAL(INSTALL_LTDL, test x"${enable_ltdl_install-no}" != xno)
AM_CONDITIONAL(CONVENIENCE_LTDL, test x"${enable_ltdl_convenience-no}" != xno)
-])])
-
-
-AC_DEFUN(AC_LTDL_SNARF_CONFIG,
-[# Read the libtool configuration
-rm -f conftest
-${SHELL-/bin/sh} ./libtool --config > conftest
-. ./conftest
-rm -f conftest
-])
+])])# AC_LTDL_ENABLE_INSTALL
+# AC_LTDL_SHLIBEXT
+# ----------------
AC_DEFUN(AC_LTDL_SHLIBEXT,
-[AC_REQUIRE([AC_LTDL_SNARF_CONFIG])dnl
+[AC_REQUIRE([_LT_AC_LTCONFIG_HACK])
AC_CACHE_CHECK([which extension is used for shared libraries],
- libltdl_cv_shlibext, [dnl
-(
- last=
- for spec in $library_names_spec; do
- last="$spec"
+ libltdl_cv_shlibext,
+[ac_last=
+ for ac_spec in $library_names_spec; do
+ ac_last="$ac_spec"
done
- echo "$last" | [sed 's/\[.*\]//;s/^[^.]*//;s/\$.*$//;s/\.$//'] > conftest
-)
+ echo "$ac_last" | [sed 's/\[.*\]//;s/^[^.]*//;s/\$.*$//;s/\.$//'] > conftest
libltdl_cv_shlibext=`cat conftest`
rm -f conftest
])
AC_DEFINE_UNQUOTED(LTDL_SHLIB_EXT, "$libltdl_cv_shlibext",
[Define to the extension used for shared libraries, say, ".so". ])
fi
-])
+])# AC_LTDL_SHLIBEXT
+# AC_LTDL_SHLIBPATH
+# -----------------
AC_DEFUN(AC_LTDL_SHLIBPATH,
-[AC_REQUIRE([AC_LTDL_SNARF_CONFIG])dnl
+[AC_REQUIRE([_LT_AC_LTCONFIG_HACK])
AC_CACHE_CHECK([which variable specifies run-time library path],
libltdl_cv_shlibpath_var, [libltdl_cv_shlibpath_var="$shlibpath_var"])
if test -n "$libltdl_cv_shlibpath_var"; then
AC_DEFINE_UNQUOTED(LTDL_SHLIBPATH_VAR, "$libltdl_cv_shlibpath_var",
[Define to the name of the environment variable that determines the dynamic library search path. ])
fi
-])
+])# AC_LTDL_SHLIBPATH
+# AC_LTDL_SYSSEARCHPATH
+# ---------------------
AC_DEFUN(AC_LTDL_SYSSEARCHPATH,
-[AC_REQUIRE([AC_LTDL_SNARF_CONFIG])dnl
+[AC_REQUIRE([_LT_AC_LTCONFIG_HACK])
AC_CACHE_CHECK([for the default library search path],
libltdl_cv_sys_search_path, [libltdl_cv_sys_search_path="$sys_lib_dlsearch_path_spec"])
if test -n "$libltdl_cv_sys_search_path"; then
AC_DEFINE_UNQUOTED(LTDL_SYSSEARCHPATH, "$sys_search_path",
[Define to the system default library search path. ])
fi
-])
+])# AC_LTDL_SYSSEARCHPATH
+# AC_LTDL_OBJDIR
+# --------------
AC_DEFUN(AC_LTDL_OBJDIR,
[AC_CACHE_CHECK([for objdir],
libltdl_cv_objdir, [libltdl_cv_objdir="$objdir"
fi])
AC_DEFINE_UNQUOTED(LTDL_OBJDIR, "$libltdl_cv_objdir/",
[Define to the sub-directory in which libtool stores uninstalled libraries. ])
-])
+])# AC_LTDL_OBJDIR
+# AC_LTDL_DLPREOPEN
+# -----------------
AC_DEFUN(AC_LTDL_DLPREOPEN,
[AC_REQUIRE([AC_LIBTOOL_SYS_GLOBAL_SYMBOL_PIPE])dnl
AC_CACHE_CHECK([whether libtool supports -dlopen/-dlpreopen],
AC_DEFINE(HAVE_PRELOADED_SYMBOLS, 1,
[Define if libtool can extract symbol lists from object files. ])
fi
-])
+])# AC_LTDL_DLPREOPEN
+# AC_LTDL_DLLIB
+# -------------
AC_DEFUN(AC_LTDL_DLLIB,
[LIBADD_DL=
AC_CHECK_LIB(dl, dlopen, [AC_DEFINE(HAVE_LIBDL, 1,
AC_CHECK_FUNCS(dlerror)
LIBS="$LIBS_SAVE"
fi
-])
+])# AC_LTDL_DLLIB
+# AC_LTDL_SYMBOL_USCORE
+# ---------------------
AC_DEFUN(AC_LTDL_SYMBOL_USCORE,
[dnl does the compiler prefix global symbols with an underscore?
AC_REQUIRE([AC_LIBTOOL_SYS_GLOBAL_SYMBOL_PIPE])dnl
])
AC_MSG_RESULT($ac_cv_sys_symbol_underscore)
AC_LTDL_DLSYM_USCORE
-])
+])# AC_LTDL_SYMBOL_USCORE
+# AC_LTDL_DLSYM_USCORE
+# --------------------
AC_DEFUN(AC_LTDL_DLSYM_USCORE,
[AC_REQUIRE([AC_LTDL_SYMBOL_USCORE])dnl
if test x"$ac_cv_sys_symbol_underscore" = xyes; then
AC_DEFINE(NEED_USCORE, 1,
[Define if dlsym() requires a leading underscode in symbol names. ])
fi
-])
+])# AC_LTDL_DLSYM_USCORE
+
projects / thirdparty / libtool.git / commitdiff
