])
+# _LT_AC_CHECK_DLFCN
+# --------------------
+AC_DEFUN(_LT_AC_CHECK_DLFCN,
+[AC_CHECK_HEADERS(dlfcn.h)
+])# _LT_AC_CHECK_DLFCN
+
# AC_LIBTOOL_SYS_GLOBAL_SYMBOL_PIPE
# ---------------------------------
AC_DEFUN([AC_LIBTOOL_SYS_GLOBAL_SYMBOL_PIPE],
AC_DIVERT_POP
])# _LT_AC_PROG_ECHO_BACKSLASH
+# _LT_AC_TRY_DLOPEN_SELF (ACTION-IF-TRUE, ACTION-IF-TRUE-W-USCORE,
+# ACTION-IF-FALSE, ACTION-IF-CROSS-COMPILING)
+# ------------------------------------------------------------------
+AC_DEFUN(_LT_AC_TRY_DLOPEN_SELF,
+[if test "$cross_compiling" = yes; then :
+ [$4]
+else
+ AC_REQUIRE([_LT_AC_CHECK_DLFCN])dnl
+ lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
+ lt_status=$lt_dlunknown
+ cat > conftest.$ac_ext <<EOF
+[#line __oline__ "configure"
+#include "confdefs.h"
+
+#if HAVE_DLFCN_H
+#include <dlfcn.h>
+#endif
+
+#include <stdio.h>
+
+#ifdef RTLD_GLOBAL
+# define LT_DLGLOBAL RTLD_GLOBAL
+#else
+# ifdef DL_GLOBAL
+# define LT_DLGLOBAL DL_GLOBAL
+# else
+# define LT_DLGLOBAL 0
+# endif
+#endif
+
+/* We may have to define LT_DLLAZY_OR_NOW in the command line if we
+ find out it does not work in some platform. */
+#ifndef LT_DLLAZY_OR_NOW
+# ifdef RTLD_LAZY
+# define LT_DLLAZY_OR_NOW RTLD_LAZY
+# else
+# ifdef DL_LAZY
+# define LT_DLLAZY_OR_NOW DL_LAZY
+# else
+# ifdef RTLD_NOW
+# define LT_DLLAZY_OR_NOW RTLD_NOW
+# else
+# ifdef DL_NOW
+# define LT_DLLAZY_OR_NOW DL_NOW
+# else
+# define LT_DLLAZY_OR_NOW 0
+# endif
+# endif
+# endif
+# endif
+#endif
+
+#ifdef __cplusplus
+extern "C" void exit (int);
+#endif
+
+fnord() { int i=42;}
+main ()
+{
+ void *self = dlopen (0, LT_DLGLOBAL|LT_DLLAZY_OR_NOW);
+ int status = $lt_dlunknown;
+
+ if (self)
+ {
+ if (dlsym (self,"fnord")) status = $lt_dlno_uscore;
+ else if (dlsym( self,"_fnord")) status = $lt_dlneed_uscore;
+ dlclose (self);
+ }
+
+ exit (status);
+}]
+EOF
+ if AC_TRY_EVAL(ac_link) && test -s conftest${ac_exeext} 2>/dev/null; then
+ (./conftest; exit; ) 2>/dev/null
+ lt_status=$?
+ case x$lt_status in
+ x$lt_dlno_uscore) $1 ;;
+ x$lt_dlneed_uscore) $2 ;;
+ x$lt_unknown|x*) $3 ;;
+ esac
+ else :
+ # compilation failed
+ $3
+ fi
+fi
+rm -fr conftest*
+])# _LT_AC_TRY_DLOPEN_SELF
+
+# AC_LIBTOOL_DLOPEN_SELF
+# -------------------
+AC_DEFUN(AC_LIBTOOL_DLOPEN_SELF,
+[if test "x$enable_dlopen" != xyes; then
+ enable_dlopen=unknown
+ enable_dlopen_self=unknown
+ enable_dlopen_self_static=unknown
+else
+ lt_cv_dlopen=no
+ lt_cv_dlopen_libs=
+
+ case "$host_os" in
+ beos*)
+ lt_cv_dlopen="load_add_on"
+ lt_cv_dlopen_libs=
+ lt_cv_dlopen_self=yes
+ ;;
+
+ cygwin* | mingw* | pw32*)
+ lt_cv_dlopen="LoadLibrary"
+ lt_cv_dlopen_libs=
+ ;;
+
+ *)
+ AC_CHECK_LIB(dl, dlopen, [lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-ldl"],
+ [AC_CHECK_FUNC(dlopen, lt_cv_dlopen="dlopen",
+ [AC_CHECK_FUNC(shl_load, lt_cv_dlopen="shl_load",
+ [AC_CHECK_LIB(svld, dlopen,
+ [lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-lsvld"],
+ [AC_CHECK_LIB(dld, shl_load,
+ [lt_cv_dlopen="dld_link" lt_cv_dlopen_libs="-dld"])
+ ])
+ ])
+ ])
+ ])
+ ;;
+ esac
+
+ if test "x$lt_cv_dlopen" != xno; then
+ enable_dlopen=yes
+ else
+ enable_dlopen=no
+ fi
+
+ case "$lt_cv_dlopen" in
+ dlopen)
+ save_CPPFLAGS="$CPP_FLAGS"
+ AC_REQUIRE([_LT_AC_CHECK_DLFCN])dnl
+ test "x$ac_cv_header_dlfcn_h" = xyes && CPPFLAGS="$CPPFLAGS -DHAVE_DLFCN_H"
+
+ save_LDFLAGS="$LDFLAGS"
+ eval LDFLAGS=\"\$LDFLAGS $export_dynamic_flag_spec\"
+
+ save_LIBS="$LIBS"
+ LIBS="$lt_cv_dlopen_libs $LIBS"
+
+ AC_CACHE_CHECK([whether a program can dlopen itself],
+ lt_cv_dlopen_self, [dnl
+ _LT_AC_TRY_DLOPEN_SELF(
+ lt_cv_dlopen_self=yes, lt_cv_dlopen_self=yes,
+ lt_cv_dlopen_self=no, lt_cv_dlopen_self=cross)
+ ])
+
+ if test "x$lt_cv_dlopen_self" = xyes; then
+ LDFLAGS="$LDFLAGS $link_static_flag"
+ AC_CACHE_CHECK([whether a statically linked program can dlopen itself],
+ lt_cv_dlopen_self_static, [dnl
+ _LT_AC_TRY_DLOPEN_SELF(
+ lt_cv_dlopen_self_static=yes, lt_cv_dlopen_self_static=yes,
+ lt_cv_dlopen_self_static=no, lt_cv_dlopen_self_static=cross)
+ ])
+ fi
+
+ CPPFLAGS="$save_CPPFLAGS"
+ LDFLAGS="$save_LDFLAGS"
+ LIBS="$save_LIBS"
+ ;;
+ esac
+
+ case "$lt_cv_dlopen_self" in
+ yes|no) enable_dlopen_self=$lt_cv_dlopen_self ;;
+ *) enable_dlopen_self=unknown ;;
+ esac
+
+ case "$lt_cv_dlopen_self_static" in
+ yes|no) enable_dlopen_self_static=$lt_cv_dlopen_self_static ;;
+ *) enable_dlopen_self_static=unknown ;;
+ esac
+fi
+])# AC_LIBTOOL_DLOPEN_SELF
+
AC_DEFUN([_LT_AC_LTCONFIG_HACK],
-[AC_REQUIRE([AC_LIBTOOL_SYS_GLOBAL_SYMBOL_PIPE])
+[AC_REQUIRE([AC_LIBTOOL_SYS_GLOBAL_SYMBOL_PIPE])dnl
# Sed substitution that helps us do robust quoting. It backslashifies
# metacharacters that are still active within double-quoted strings.
Xsed='sed -e s/^X//'
library_names_spec='${libname}.so'
dynamic_linker="$host_os ld.so"
shlibpath_var=LIBRARY_PATH
- lt_cv_dlopen="load_add_on"
- lt_cv_dlopen_libs=
- lt_cv_dlopen_self=yes
;;
bsdi4*)
dynamic_linker='Win32 ld.exe'
# FIXME: first we should search . and the directory the executable is in
shlibpath_var=PATH
- lt_cv_dlopen="LoadLibrary"
- lt_cv_dlopen_libs=
;;
freebsd1*)
variables_saved_for_relink="$variables_saved_for_relink GCC_EXEC_PREFIX COMPILER_PATH LIBRARY_PATH"
fi
-## FIXME: this should be a separate macro
-##
-if test "x$enable_dlopen" != xyes; then
- enable_dlopen=unknown
- enable_dlopen_self=unknown
- enable_dlopen_self_static=unknown
-else
- lt_cv_dlopen=no
- lt_cv_dlopen_libs=
- AC_CHECK_LIB(dl, dlopen, [lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-ldl"],
- [AC_CHECK_FUNC(dlopen, lt_cv_dlopen="dlopen",
- [AC_CHECK_FUNC(shl_load, lt_cv_dlopen="shl_load",
- [AC_CHECK_LIB(svld, dlopen,
- [lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-lsvld"],
- [AC_CHECK_LIB(dld, shl_load,
- [lt_cv_dlopen="dld_link" lt_cv_dlopen_libs="-dld"])
- ])
- ])
- ])
- ])
-
- if test "x$lt_cv_dlopen" != xno; then
- enable_dlopen=yes
- else
- enable_dlopen=no
- fi
-
- case "$lt_cv_dlopen" in
- dlopen)
- save_CPPFLAGS="$CPP_FLAGS"
- save_LDFLAGS="$LD_FLAGS"
- save_LIBS="$LIBS"
- AC_CHECK_HEADER(dlfcn.h, CPPFLAGS="$CPPFLAGS -DHAVE_DLFCN_H")
- eval LDFLAGS=\"\$LDFLAGS $export_dynamic_flag_spec\"
- LIBS="$lt_cv_dlopen_libs $LIBS"
-
- AC_MSG_CHECKING([whether a program can dlopen itself])
- AC_TRY_RUN([
-#if HAVE_DLFCN_H
-#include <dlfcn.h>
-#endif
-
-#include <stdio.h>
-
-#ifdef RTLD_GLOBAL
-# define LTDL_GLOBAL RTLD_GLOBAL
-#else
-# ifdef DL_GLOBAL
-# define LTDL_GLOBAL DL_GLOBAL
-# else
-# define LTDL_GLOBAL 0
-# endif
-#endif
-
-/* We may have to define LTDL_LAZY_OR_NOW in the command line if we
- find out it does not work in some platform. */
-#ifndef LTDL_LAZY_OR_NOW
-# ifdef RTLD_LAZY
-# define LTDL_LAZY_OR_NOW RTLD_LAZY
-# else
-# ifdef DL_LAZY
-# define LTDL_LAZY_OR_NOW DL_LAZY
-# else
-# ifdef RTLD_NOW
-# define LTDL_LAZY_OR_NOW RTLD_NOW
-# else
-# ifdef DL_NOW
-# define LTDL_LAZY_OR_NOW DL_NOW
-# else
-# define LTDL_LAZY_OR_NOW 0
-# endif
-# endif
-# endif
-# endif
-#endif
-
-fnord() { int i=42;}
-main() { void *self, *ptr1, *ptr2; self=dlopen(0,LTDL_GLOBAL|LTDL_LAZY_OR_NOW);
- if(self) { ptr1=dlsym(self,"fnord"); ptr2=dlsym(self,"_fnord");
- if(ptr1 || ptr2) { dlclose(self); exit(0); } } exit(1); }
-], lt_cv_dlopen_self=yes, lt_cv_dlopen_self=no, lt_cv_dlopen_self=cross)
- AC_MSG_RESULT([$lt_cv_dlopen_self])
-
- if test "$lt_cv_dlopen_self" = yes; then
- LDFLAGS="$LDFLAGS $link_static_flag"
- AC_MSG_CHECKING([whether a statically linked program can dlopen itself])
- AC_TRY_RUN([
-#if HAVE_DLFCN_H
-#include <dlfcn.h>
-#endif
-
-#include <stdio.h>
-
-#ifdef RTLD_GLOBAL
-# define LTDL_GLOBAL RTLD_GLOBAL
-#else
-# ifdef DL_GLOBAL
-# define LTDL_GLOBAL DL_GLOBAL
-# else
-# define LTDL_GLOBAL 0
-# endif
-#endif
-
-/* We may have to define LTDL_LAZY_OR_NOW in the command line if we
- find out it does not work in some platform. */
-#ifndef LTDL_LAZY_OR_NOW
-# ifdef RTLD_LAZY
-# define LTDL_LAZY_OR_NOW RTLD_LAZY
-# else
-# ifdef DL_LAZY
-# define LTDL_LAZY_OR_NOW DL_LAZY
-# else
-# ifdef RTLD_NOW
-# define LTDL_LAZY_OR_NOW RTLD_NOW
-# else
-# ifdef DL_NOW
-# define LTDL_LAZY_OR_NOW DL_NOW
-# else
-# define LTDL_LAZY_OR_NOW 0
-# endif
-# endif
-# endif
-# endif
-#endif
-
-fnord() { int i=42;}
-main() { void *self, *ptr1, *ptr2; self=dlopen(0,LTDL_GLOBAL|LTDL_LAZY_OR_NOW);
- if(self) { ptr1=dlsym(self,"fnord"); ptr2=dlsym(self,"_fnord");
- if(ptr1 || ptr2) { dlclose(self); exit(0); } } exit(1); }
-], lt_cv_dlopen_self_static=yes, lt_cv_dlopen_self_static=no,
- lt_cv_dlopen_self_static=cross)
- AC_MSG_RESULT([$lt_cv_dlopen_self_static])
- fi
- CPPFLAGS="$save_CPPFLAGS"
- LDFLAGS="$save_LDFLAGS"
- LIBS="$save_LIBS"
- ;;
- esac
-
- case "$lt_cv_dlopen_self" in
- yes|no) enable_dlopen_self=$lt_cv_dlopen_self ;;
- *) enable_dlopen_self=unknown ;;
- esac
-
- case "$lt_cv_dlopen_self_static" in
- yes|no) enable_dlopen_self_static=$lt_cv_dlopen_self_static ;;
- *) enable_dlopen_self_static=unknown ;;
- esac
-fi
-##
-## END FIXME
+AC_LIBTOOL_DLOPEN_SELF
## FIXME: this should be a separate macro
##
## configuration script generated by Autoconf, you may include it under
## the same distribution terms that you use for the rest of that program.
-# serial 1 AC_LIB_LTDL
+# serial 2 AC_LIB_LTDL
# AC_LIB_LTDL
# -----------
# Perform all the checks necessary for compilation of the ltdl objects
# -- including compiler checks (above) and header checks (below).
AC_REQUIRE([AC_HEADER_STDC])dnl
+AC_REQUIRE([_LT_AC_CHECK_DLFCN])dnl
-AC_CHECK_HEADERS(malloc.h memory.h stdlib.h stdio.h ctype.h dlfcn.h dl.h dld.h)
+AC_CHECK_HEADERS(malloc.h memory.h stdlib.h stdio.h ctype.h dl.h dld.h)
AC_CHECK_HEADERS(string.h strings.h, break)
AC_CHECK_FUNCS(strchr index, break)
AC_CHECK_FUNCS(strrchr rindex, break)
fi
else
echo "configure: failed program was:" >&AC_FD_CC
- cat conftest.$ac_ext >&AC_FD_CC
+ cat conftest.c >&AC_FD_CC
fi
rm -rf conftest*
])
AC_MSG_RESULT($ac_cv_sys_symbol_underscore)
])# AC_LTDL_SYMBOL_USCORE
+
# AC_LTDL_DLSYM_USCORE
# --------------------
AC_DEFUN(AC_LTDL_DLSYM_USCORE,
test x"$ac_cv_lib_dl_dlopen" = xyes ; then
AC_CACHE_CHECK([whether we have to add an underscore for dlsym],
libltdl_cv_need_uscore, [dnl
- AC_TRY_RUN([
-#if HAVE_DLFCN_H
-#include <dlfcn.h>
-#endif
-
-#include <stdio.h>
-
-#ifdef RTLD_GLOBAL
-# define LTDL_GLOBAL RTLD_GLOBAL
-#else
-# ifdef DL_GLOBAL
-# define LTDL_GLOBAL DL_GLOBAL
-# else
-# define LTDL_GLOBAL 0
-# endif
-#endif
-
-/* We may have to define LTDL_LAZY_OR_NOW in the command line if we
- find out it does not work in some platform. */
-#ifndef LTDL_LAZY_OR_NOW
-# ifdef RTLD_LAZY
-# define LTDL_LAZY_OR_NOW RTLD_LAZY
-# else
-# ifdef DL_LAZY
-# define LTDL_LAZY_OR_NOW DL_LAZY
-# else
-# ifdef RTLD_NOW
-# define LTDL_LAZY_OR_NOW RTLD_NOW
-# else
-# ifdef DL_NOW
-# define LTDL_LAZY_OR_NOW DL_NOW
-# else
-# define LTDL_LAZY_OR_NOW 0
-# endif
-# endif
-# endif
-# endif
-#endif
-
-fnord() { int i=42;}
-main() { void *self, *ptr1, *ptr2; self=dlopen(0,LTDL_GLOBAL|LTDL_LAZY_OR_NOW);
- if(self) { ptr1=dlsym(self,"fnord"); ptr2=dlsym(self,"_fnord");
- if(ptr1 && !ptr2) { dlclose(self); exit(0); } } exit(1); }
-], libltdl_cv_need_uscore=no, libltdl_cv_need_uscore=yes,
- libltdl_cv_need_uscore=cross
-)])
+ libltdl_cv_need_uscore=unknown
+ _LT_AC_TRY_DLOPEN_SELF(
+ libltdl_cv_need_uscore=no, libltdl_cv_need_uscore=yes,
+ [], libltdl_cv_need_uscore=cross)
+ ])
fi
fi
[Define if dlsym() requires a leading underscode in symbol names. ])
fi
])# AC_LTDL_DLSYM_USCORE
-
projects / thirdparty / libtool.git / commitdiff
