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Add a configure check for RTLD_GLOBAL. (James Vega, Roland Puntaier)

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This commit is contained in:
Bram Moolenaar
2010-08-13 16:22:57 +02:00
parent 2a988a162c
commit b744b2fa32
8 changed files with 162 additions and 36 deletions
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6
runtime/doc/if_pyth.txt
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@@ -1,4 +1,4 @@
*if_pyth.txt* For Vim version 7.3f. Last change: 2010 Aug 10
*if_pyth.txt* For Vim version 7.3f. Last change: 2010 Aug 13
VIM REFERENCE MANUAL by Paul Moore
@@ -348,8 +348,10 @@ Vim can be built in four ways (:version output):
3. Python 3 support only (-python, +python3 or +python3/dyn)
4. Python 2 and 3 support (+python/dyn, +python3/dyn)
*E836* *E837*
You can see that when Python 2 and Python 3 are both supported they must be
loaded dynamically.
loaded dynamically. Depending on how the libraries have been build it might
be impossible to use ":py3" and ":python" in one Vim session.
On Linux/Unix systems this can only be done without importing global symbols.
In this case python's "import" might fail, if the library expects the symbols

9
runtime/doc/todo.txt
View File

@@ -30,15 +30,14 @@ be worked on, but only if you sponsor Vim development. See |sponsor|.
*known-bugs*
-------------------- Known bugs and current work -----------------------
Have a close look at :find completion, anything that could be wrong?
Patch for :python + :py3. (James Vega, Roland Puntaier, 2010 Aug 12)
Patch for crash with cmdline editing functions. (Dominique Pelle, 2010 Aug 12)
Test 73 fails on MS-Windows when compiled with DJGPP.
:find completion with 'path' set to "./**" results in full path for
"./subdir/file", should shorten to start with "./".
Have a close look at :find completion, anything that could be wrong?
Test 73 fails on MS-Windows when compiled with DJGPP and run twice. How to
delete the Xfind directory?
Before release 7.3:
- Rename vim73 branch to default (hints: Xavier de Gaye, 2010 May 23)

1
src/Makefile
View File

@@ -2255,6 +2255,7 @@ clean celan: testclean
-rm -f *.o objects/* core $(VIMTARGET).core $(VIMTARGET) vim xxd/*.o
-rm -f $(TOOLS) auto/osdef.h auto/pathdef.c auto/if_perl.c
-rm -f conftest* *~ auto/link.sed
-rm -f runtime pixmaps
-rm -rf $(APPDIR)
-rm -rf mzscheme_base.c
if test -d $(PODIR); then \

87
src/auto/configure vendored
View File

@@ -1424,8 +1424,8 @@ Optional Features:
--enable-luainterp=OPTS Include Lua interpreter. default=no OPTS=no/yes/dynamic
--enable-mzschemeinterp Include MzScheme interpreter.
--enable-perlinterp=OPTS Include Perl interpreter. default=no OPTS=no/yes/dynamic
--enable-pythoninterp Include Python interpreter.
--enable-python3interp Include Python3 interpreter.
--enable-pythoninterp=OPTS Include Python interpreter. default=no OPTS=no/yes/dynamic
--enable-python3interp=OPTS Include Python3 interpreter. default=no OPTS=no/yes/dynamic
--enable-tclinterp Include Tcl interpreter.
--enable-rubyinterp Include Ruby interpreter.
--enable-cscope Include cscope interface.
@@ -5118,7 +5118,7 @@ fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $enable_pythoninterp" >&5
$as_echo "$enable_pythoninterp" >&6; }
if test "$enable_pythoninterp" = "yes"; then
if test "$enable_pythoninterp" = "yes" -o "$enable_pythoninterp" = "dynamic"; then
# Extract the first word of "python", so it can be a program name with args.
set dummy python; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
@@ -5409,7 +5409,7 @@ fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $enable_python3interp" >&5
$as_echo "$enable_python3interp" >&6; }
if test "$enable_python3interp" = "yes"; then
if test "$enable_python3interp" = "yes" -o "$enable_python3interp" = "dynamic"; then
# Extract the first word of "python3", so it can be a program name with args.
set dummy python3; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
@@ -5614,8 +5614,8 @@ rm -f core conftest.err conftest.$ac_objext \
$as_echo "no" >&6; }
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if compile and link flags for Python are sane" >&5
$as_echo_n "checking if compile and link flags for Python are sane... " >&6; }
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if compile and link flags for Python 3 are sane" >&5
$as_echo_n "checking if compile and link flags for Python 3 are sane... " >&6; }
cflags_save=$CFLAGS
libs_save=$LIBS
CFLAGS="$CFLAGS $PYTHON3_CFLAGS"
@@ -5667,10 +5667,85 @@ if test "$python_ok" = yes && test "$python3_ok" = yes; then
$as_echo "#define DYNAMIC_PYTHON3 1" >>confdefs.h
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we can do without RTLD_GLOBAL" >&5
$as_echo_n "checking whether we can do without RTLD_GLOBAL... " >&6; }
cflags_save=$CFLAGS
CFLAGS="$CFLAGS $PYTHON3_CFLAGS"
ldflags_save=$LDFLAGS
LDFLAGS="$LDFLAGS -ldl"
if test "$cross_compiling" = yes; then :
{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
as_fn_error "cannot run test program while cross compiling
See \`config.log' for more details." "$LINENO" 5; }
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
#include <dlfcn.h>
/* If this program fails, then RTLD_GLOBAL is needed.
* RTLD_GLOBAL will be used and then it is not possible to
* have both python versions enabled in the same vim instance.
* Only the first pyhton version used will be switched on.
*/
int no_rtl_global_needed_for(char *python_instsoname)
{
int needed = 0;
void* pylib = dlopen(python_instsoname, RTLD_LAZY);
if (pylib != 0)
{
void (*init)(void) = dlsym(pylib, "Py_Initialize");
int (*simple)(char*) = dlsym(pylib, "PyRun_SimpleString");
void (*final)(void) = dlsym(pylib, "Py_Finalize");
(*init)();
needed = (*simple)("import termios") == -1;
(*final)();
dlclose(pylib);
}
return !needed;
}
int main(int argc, char** argv)
{
int not_needed = 0;
if (no_rtl_global_needed_for("libpython2.7.so.1.0") && no_rtl_global_needed_for("libpython3.1.so.1.0"))
not_needed = 1;
return !not_needed;
}
_ACEOF
if ac_fn_c_try_run "$LINENO"; then :
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
$as_echo "yes" >&6; };$as_echo "#define PY_NO_RTLD_GLOBAL 1" >>confdefs.h
else
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }
fi
rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
conftest.$ac_objext conftest.beam conftest.$ac_ext
fi
CFLAGS=$cflags_save
LDFLAGS=$ldflags_save
PYTHON_SRC="if_python.c"
PYTHON_OBJ="objects/if_python.o"
PYTHON_CFLAGS="$PYTHON_CFLAGS -DDYNAMIC_PYTHON_DLL=\\\"${python_INSTSONAME}\\\""
PYTHON_LIBS=
PYTHON3_SRC="if_python3.c"
PYTHON3_OBJ="objects/if_python3.o"
PYTHON3_CFLAGS="$PYTHON3_CFLAGS -DDYNAMIC_PYTHON3_DLL=\\\"${python3_INSTSONAME}\\\""
PYTHON3_LIBS=
elif test "$python_ok" = yes && test "$enable_pythoninterp" = "dynamic"; then
$as_echo "#define DYNAMIC_PYTHON 1" >>confdefs.h
PYTHON_SRC="if_python.c"
PYTHON_OBJ="objects/if_python.o"
PYTHON_CFLAGS="$PYTHON_CFLAGS -DDYNAMIC_PYTHON_DLL=\\\"${python_INSTSONAME}\\\""
PYTHON_LIBS=
elif test "$python3_ok" = yes && test "$enable_python3interp" = "dynamic"; then
$as_echo "#define DYNAMIC_PYTHON3 1" >>confdefs.h
PYTHON3_SRC="if_python3.c"
PYTHON3_OBJ="objects/if_python3.o"
PYTHON3_CFLAGS="$PYTHON3_CFLAGS -DDYNAMIC_PYTHON3_DLL=\\\"${python3_INSTSONAME}\\\""

3
src/config.h.in
View File

@@ -343,6 +343,9 @@
/* Define for linking via dlopen() or LoadLibrary() */
#undef DYNAMIC_PYTHON3
/* Define if dynamic python does not require RTLD_GLOBAL */
#undef PY_NO_RTLD_GLOBAL
/* Define if you want to include the Ruby interpreter. */
#undef FEAT_RUBY

62
src/configure.in
View File

@@ -757,10 +757,10 @@ AC_SUBST(PERL_LIBS)
AC_MSG_CHECKING(--enable-pythoninterp argument)
AC_ARG_ENABLE(pythoninterp,
[ --enable-pythoninterp Include Python interpreter.], ,
[ --enable-pythoninterp[=OPTS] Include Python interpreter. [default=no] [OPTS=no/yes/dynamic]], ,
[enable_pythoninterp="no"])
AC_MSG_RESULT($enable_pythoninterp)
if test "$enable_pythoninterp" = "yes"; then
if test "$enable_pythoninterp" = "yes" -o "$enable_pythoninterp" = "dynamic"; then
dnl -- find the python executable
AC_PATH_PROG(vi_cv_path_python, python)
if test "X$vi_cv_path_python" != "X"; then
@@ -944,10 +944,10 @@ AC_SUBST(PYTHON_OBJ)
AC_MSG_CHECKING(--enable-python3interp argument)
AC_ARG_ENABLE(python3interp,
[ --enable-python3interp Include Python3 interpreter.], ,
[ --enable-python3interp[=OPTS] Include Python3 interpreter. [default=no] [OPTS=no/yes/dynamic]], ,
[enable_python3interp="no"])
AC_MSG_RESULT($enable_python3interp)
if test "$enable_python3interp" = "yes"; then
if test "$enable_python3interp" = "yes" -o "$enable_python3interp" = "dynamic"; then
dnl -- find the python3 executable
AC_PATH_PROG(vi_cv_path_python3, python3)
if test "X$vi_cv_path_python3" != "X"; then
@@ -1075,7 +1075,7 @@ eof
dnl check that compiling a simple program still works with the flags
dnl added for Python.
AC_MSG_CHECKING([if compile and link flags for Python are sane])
AC_MSG_CHECKING([if compile and link flags for Python 3 are sane])
cflags_save=$CFLAGS
libs_save=$LIBS
CFLAGS="$CFLAGS $PYTHON3_CFLAGS"
@@ -1109,6 +1109,46 @@ dnl with dlopen(), dlsym(), dlclose()
if test "$python_ok" = yes && test "$python3_ok" = yes; then
AC_DEFINE(DYNAMIC_PYTHON)
AC_DEFINE(DYNAMIC_PYTHON3)
AC_MSG_CHECKING(whether we can do without RTLD_GLOBAL)
cflags_save=$CFLAGS
CFLAGS="$CFLAGS $PYTHON3_CFLAGS"
ldflags_save=$LDFLAGS
LDFLAGS="$LDFLAGS -ldl"
AC_RUN_IFELSE([
#include <dlfcn.h>
/* If this program fails, then RTLD_GLOBAL is needed.
* RTLD_GLOBAL will be used and then it is not possible to
* have both python versions enabled in the same vim instance.
* Only the first pyhton version used will be switched on.
*/
int no_rtl_global_needed_for(char *python_instsoname)
{
int needed = 0;
void* pylib = dlopen(python_instsoname, RTLD_LAZY);
if (pylib != 0)
{
void (*init)(void) = dlsym(pylib, "Py_Initialize");
int (*simple)(char*) = dlsym(pylib, "PyRun_SimpleString");
void (*final)(void) = dlsym(pylib, "Py_Finalize");
(*init)();
needed = (*simple)("import termios") == -1;
(*final)();
dlclose(pylib);
}
return !needed;
}
int main(int argc, char** argv)
{
int not_needed = 0;
if (no_rtl_global_needed_for("libpython2.7.so.1.0") && no_rtl_global_needed_for("libpython3.1.so.1.0"))
not_needed = 1;
return !not_needed;
}],
[AC_MSG_RESULT(yes);AC_DEFINE(PY_NO_RTLD_GLOBAL)], [AC_MSG_RESULT(no)])
CFLAGS=$cflags_save
LDFLAGS=$ldflags_save
PYTHON_SRC="if_python.c"
PYTHON_OBJ="objects/if_python.o"
PYTHON_CFLAGS="$PYTHON_CFLAGS -DDYNAMIC_PYTHON_DLL=\\\"${python_INSTSONAME}\\\""
@@ -1117,6 +1157,18 @@ if test "$python_ok" = yes && test "$python3_ok" = yes; then
PYTHON3_OBJ="objects/if_python3.o"
PYTHON3_CFLAGS="$PYTHON3_CFLAGS -DDYNAMIC_PYTHON3_DLL=\\\"${python3_INSTSONAME}\\\""
PYTHON3_LIBS=
elif test "$python_ok" = yes && test "$enable_pythoninterp" = "dynamic"; then
AC_DEFINE(DYNAMIC_PYTHON)
PYTHON_SRC="if_python.c"
PYTHON_OBJ="objects/if_python.o"
PYTHON_CFLAGS="$PYTHON_CFLAGS -DDYNAMIC_PYTHON_DLL=\\\"${python_INSTSONAME}\\\""
PYTHON_LIBS=
elif test "$python3_ok" = yes && test "$enable_python3interp" = "dynamic"; then
AC_DEFINE(DYNAMIC_PYTHON3)
PYTHON3_SRC="if_python3.c"
PYTHON3_OBJ="objects/if_python3.o"
PYTHON3_CFLAGS="$PYTHON3_CFLAGS -DDYNAMIC_PYTHON3_DLL=\\\"${python3_INSTSONAME}\\\""
PYTHON3_LIBS=
fi
AC_MSG_CHECKING(--enable-tclinterp argument)

15
src/if_python.c
View File

@@ -102,9 +102,7 @@ struct PyMethodDef { Py_ssize_t a; };
# include <dlfcn.h>
# define FARPROC void*
# define HINSTANCE void*
# ifdef FEAT_PYTHON3
/* Don't use RTLD_GLOBAL, it may cause a crash if both :python and :py3 are
* used. But without it importing may fail, e.g., for termios. */
# ifdef PY_NO_RTLD_GLOBAL
# define load_dll(n) dlopen((n), RTLD_LAZY)
# else
# define load_dll(n) dlopen((n), RTLD_LAZY|RTLD_GLOBAL)
@@ -351,16 +349,15 @@ python_runtime_link_init(char *libname, int verbose)
{
int i;
#if 0 /* this should be OK now that we don't use RTLD_GLOBAL */
#if defined(UNIX) && defined(FEAT_PYTHON3)
/* Can't have Python and Python3 loaded at the same time, it may cause a
* crash. */
#if !defined(PY_NO_RTLD_GLOBAL) && defined(UNIX) && defined(FEAT_PYTHON3)
/* Can't have Python and Python3 loaded at the same time.
* It cause a crash, because RTLD_GLOBAL is needed for
* standard C extension libraries of one or both python versions. */
if (python3_loaded())
{
EMSG(_("E999: Python: Cannot use :py and :py3 in one session"));
EMSG(_("E836: This Vim cannot execute :python after using :py3"));
return FAIL;
}
#endif
#endif
if (hinstPython)

15
src/if_python3.c
View File

@@ -80,9 +80,7 @@ static void init_structs(void);
# include <dlfcn.h>
# define FARPROC void*
# define HINSTANCE void*
# ifdef FEAT_PYTHON
/* Don't use RTLD_GLOBAL, it may cause a crash if both :python and :py3 are
* used. But without it importing may fail, e.g., for termios. */
# ifdef PY_NO_RTLD_GLOBAL
# define load_dll(n) dlopen((n), RTLD_LAZY)
# else
# define load_dll(n) dlopen((n), RTLD_LAZY|RTLD_GLOBAL)
@@ -338,16 +336,15 @@ py3_runtime_link_init(char *libname, int verbose)
int i;
void *ucs_from_string, *ucs_from_string_and_size;
# if 0 /* this should be OK now that we don't use RTLD_GLOBAL */
# if defined(UNIX) && defined(FEAT_PYTHON)
/* Can't have Python and Python3 loaded at the same time, it may cause a
* crash. */
# if !defined(PY_NO_RTLD_GLOBAL) && defined(UNIX) && defined(FEAT_PYTHON)
/* Can't have Python and Python3 loaded at the same time.
* It cause a crash, because RTLD_GLOBAL is needed for
* standard C extension libraries of one or both python versions. */
if (python_loaded())
{
EMSG(_("E999: Python: Cannot use :py and :py3 in one session"));
EMSG(_("E837: This Vim cannot execute :py3 after using :python"));
return FAIL;
}
# endif
# endif
if (hinstPy3 != 0)