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misc win32 cleanups

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This commit is contained in:
Gary V. Vaughan 1998-12-21 13:04:14 +00:00
parent 45279c6d70
commit 7fe8f5c785
9 changed files with 126 additions and 53 deletions
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36
ChangeLog
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@ -1,3 +1,39 @@
1998-12-21 Gary V. Vaughan <gvaughan@oranda.demon.co.uk>
* libtool.m4 (AM_SYS_NM_PARSE): apparently __ptr_t is predefined
on some systems - use lt_ptr_t instead.
* ltconfig.in: ditto.
* ltmain.in: ditto.
* libtool.m4 (AM_SYS_SYMBOL_UNDERSCORE): use an AC_SUBST to pass
the result of this into the compile rather than AC_DEFINE which
breaks when building with older versions of autoconf.
* ltconfig.in (symxfrm): Don't put the leading underscore back
with the global_symbol_pipe.
* demo/dlmain.c (main): No need to specialcase underscores in
dld_preloaded_symbols - it is fixed by symxfrm above!
* libltdl/configure.in: use AM_SYS_SYMBOL_UNDERSCORE from
libtool.m4 rather than reincent the wheel here =)O|
* ltmain.in: Fix deplibs methods to not rely on a.out (cygwin
uses a.exe!).
* libltdl/configure.in: Cleanups - fix header comment and emacs
local-vars.
* demo/dlmain.c (win32_force_data_import_address): a nasty hack
to force the address of imported data symbols into
dld_preloaded_symbols on win32, which does data imports
differently to function imports (sheesh!). This functionality
needs to be moved into the dld_preloaded_symbols generation code.
demo/helldl with static linking is broken on win32 by this change,
probably until after libtool-1.3 =(O|
* demo/foo.h: make sure __CYGWIN32__ is always defined on cygwin32
systems. Use the correct __declspec macro for lib exports/imports
on cygwin32.
* demo/foo.c, demo/hello.c: Make sure we tell foo.h that these
sources are inside libfoo, and want to export symbols.
1998-12-20 Thomas Tanner <tanner@gmx.de>
* autogen: configure demo, depdemo, libltdl and mdemo

32
demo/dlmain.c
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@ -29,6 +29,25 @@ struct dld_symlist
extern struct dld_symlist dld_preloaded_symbols[];
#ifdef __CYGWIN32__
int
win32_force_data_import_address __P((void))
{
struct dld_symlist *s;
s = dld_preloaded_symbols;
while (s->name)
{
if (!strcmp ("nothing", s->name))
s->address = &nothing;
s++;
}
return 0;
}
#endif
int
main (argc, argv)
int argc;
@ -41,20 +60,17 @@ main (argc, argv)
printf ("Welcome to *modular* GNU Hell!\n");
#ifdef __CYGWIN32__
/* runtime table initialisation */
(void) win32_force_data_import_address();
#endif
/* Look up the symbols we require for this demonstration. */
s = dld_preloaded_symbols;
while (s->name)
{
if (s->address) {
char *name = s->name;
#ifdef WITH_SYMBOL_UNDERSCORE
if (*name != '_')
{
fprintf(stderr, "ERROR: configure detected leading underscores incorrectly.\n");
exit(1);
}
name++;
#endif
printf ("found symbol: %s\n", name);
if (!strcmp ("hello", name))
phello = s->address;

5
demo/foo.c
View File

@ -18,12 +18,15 @@ along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA. */
#define _LIBFOO_COMPILATION_
#include "foo.h"
#undef _LIBFOO_COMPILATION
#include <stdio.h>
#include <math.h>
/* Give a global variable definition. */
int nothing;
int nothing = FOO_RET;
int
foo ()

25
demo/foo.h
View File

@ -22,6 +22,16 @@ USA. */
#ifndef _FOO_H_
#define _FOO_H_ 1
/* At some point, cygwin will stop defining __CYGWIN32__, but b19 and
* earlier do not define __CYGWIN__. This snippit allows us to check
* for __CYGWIN32__ reliably for both old and (probable) future releases.
*/
#ifdef __CYGWIN__
# ifndef __CYGWIN32__
# define __CYGWIN32__
# endif
#endif
/* __BEGIN_DECLS should be used at the beginning of your declarations,
so that C++ compilers don't mangle their names. Use __END_DECLS at
the end of C declarations. */
@ -39,21 +49,32 @@ USA. */
that don't understand ANSI C prototypes still work, and ANSI C
compilers can issue warnings about type mismatches. */
#undef __P
#if defined (__STDC__) || defined (_AIX) || (defined (__mips) && defined (_SYSTYPE_SVR4)) || defined(WIN32) || defined(__cplusplus)
#if defined (__STDC__) || defined (_AIX) || (defined (__mips) && defined (_SYSTYPE_SVR4)) || defined(__CYGWIN32__) || defined(__cplusplus)
# define __P(protos) protos
#else
# define __P(protos) ()
#endif
#ifdef __CYGWIN32__
# ifdef _LIBFOO_COMPILATION_
# define EXTERN __declspec(dllexport)
# else
# define EXTERN extern __declspec(dllimport)
# endif
#else
# define EXTERN extern
#endif
/* Silly constants that the functions return. */
#define HELLO_RET 0xe110
#define FOO_RET 0xf00
/* Declarations. Note the wonderful use of the above macros. */
__BEGIN_DECLS
int foo __P((void));
int hello __P((void));
extern int nothing;
EXTERN int nothing;
__END_DECLS
#endif /* !_FOO_H_ */

3
demo/hello.c
View File

@ -18,7 +18,10 @@ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA. */
/* Written by Gordon Matzigkeit <gord@gnu.ai.mit.edu> */
#define _LIBFOO_COMPILATION
#include "foo.h"
#undef _LIBFOO_COMPILATION
#include <stdio.h>
int

22
libltdl/configure.in
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@ -1,4 +1,5 @@
dnl Initialize the hell package.
dnl Process this file with autoconf to create configure.
dnl Initialize the ltdl package.
AC_INIT(ltdl.c)
AM_INIT_AUTOMAKE(libltdl,1.0)
@ -32,18 +33,8 @@ AC_CHECK_FUNCS(dlopen, AC_DEFINE(HAVE_LIBDL),
)
AC_SUBST(LIBADD_DL)
AC_CACHE_CHECK([for underscore before symbols], libltdl_cv_uscore, [
echo "main(){int i=1;} fnord(){int i=23; int ltuae=42;}" > conftest.c
${CC} -c conftest.c > /dev/null
if (nm conftest.$ac_objext | grep _fnord) > /dev/null; then
libltdl_cv_uscore=yes
else
libltdl_cv_uscore=no
fi
rm -f conftest*
])
if test x"$libltdl_cv_uscore" = xyes; then
AM_SYS_SYMBOL_UNDERSCORE
if test x"$USE_SYMBOL_UNDERSCORE" = xyes; then
if test x"$ac_cv_func_dlopen" = xyes ||
test x"$ac_cv_lib_dl_dlopen" = xyes ; then
AC_CACHE_CHECK([whether we have to add an underscore for dlsym],
@ -67,3 +58,8 @@ fi
dnl Output the makefile
AC_OUTPUT(Makefile)
# Local Variables:
# mode:shell-script
# sh-indentation:2
# End:

16
libtool.m4 vendored
View File

@ -428,9 +428,9 @@ EOF
cat <<EOF >> conftest.c
#if defined (__STDC__) && __STDC__
# define __ptr_t void *
# define lt_ptr_t void *
#else
# define __ptr_t char *
# define lt_ptr_t char *
#endif
/* The number of symbols in dld_preloaded_symbols, -1 if unsorted. */
@ -439,16 +439,16 @@ int dld_preloaded_symbol_count = $ac_count;
/* The mapping between symbol names and symbols. */
struct {
char *name;
__ptr_t address;
lt_ptr_t address;
}
changequote(,)dnl
dld_preloaded_symbols[] =
changequote([,])dnl
{
EOF
sed 's/^\(.*\) \(.*\)$/ {"\1", (__ptr_t) \&\2},/' < "$ac_nlist" >> conftest.c
sed 's/^\(.*\) \(.*\)$/ {"\1", (lt_ptr_t) \&\2},/' < "$ac_nlist" >> conftest.c
cat <<\EOF >> conftest.c
{0, (__ptr_t) 0}
{0, (lt_ptr_t) 0}
};
#ifdef __cplusplus
@ -537,8 +537,6 @@ fi
rm -rf conftest*
])
AC_MSG_RESULT($ac_cv_sys_symbol_underscore)
if test x$ac_cv_sys_symbol_underscore = xyes; then
AC_DEFINE(WITH_SYMBOL_UNDERSCORE,1,
[define if compiled symbols have a leading underscore])
fi
USE_SYMBOL_UNDERSCORE=${ac_cv_sys_symbol_underscore=no}
AC_SUBST(USE_SYMBOL_UNDERSCORE)dnl
])

12
ltconfig.in
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@ -1382,7 +1382,6 @@ aix*)
;;
sunos* | cygwin32* | mingw32*)
sympat='_\([_A-Za-z][_A-Za-z0-9]*\)'
symxfrm='_\1 \1'
;;
irix*)
# Cannot use undefined symbols on IRIX because inlined functions mess us up.
@ -1455,9 +1454,9 @@ EOF
cat <<EOF >> conftest.c
#if defined (__STDC__) && __STDC__
# define __ptr_t void *
# define lt_ptr_t void *
#else
# define __ptr_t char *
# define lt_ptr_t char *
#endif
/* The number of symbols in dld_preloaded_symbols, -1 if unsorted. */
@ -1466,14 +1465,14 @@ int dld_preloaded_symbol_count = $count;
/* The mapping between symbol names and symbols. */
struct {
char *name;
__ptr_t address;
lt_ptr_t address;
}
dld_preloaded_symbols[] =
{
EOF
sed 's/^\(.*\) \(.*\)$/ {"\1", (__ptr_t) \&\2},/' < "$nlist" >> conftest.c
sed 's/^\(.*\) \(.*\)$/ {"\1", (lt_ptr_t) \&\2},/' < "$nlist" >> conftest.c
cat <<\EOF >> conftest.c
{0, (__ptr_t) 0}
{0, (lt_ptr_t) 0}
};
#ifdef __cplusplus
@ -1606,6 +1605,7 @@ cygwin32* | mingw32*)
dynamic_linker='Win32 ld.exe'
libname_spec='$name'
need_lib_prefix=no
# FIXME: first we should search . and the directory the executable is in
shlibpath_var=PATH
;;

28
ltmain.in
View File

@ -1399,10 +1399,10 @@ compiler."
cat > conftest.c <<EOF
int main() { return 0; }
EOF
$rm a.out
$C_compiler conftest.c $deplibs
$rm conftest
$C_compiler -o conftest conftest.c $deplibs
if test $? -eq 0 ; then
ldd_output=`ldd a.out`
ldd_output=`ldd conftest`
for i in $deplibs; do
name="`expr $i : '-l\(.*\)'`"
# If $name is empty we are operating on a -L argument.
@ -1431,11 +1431,11 @@ EOF
name="`expr $i : '-l\(.*\)'`"
# If $name is empty we are operating on a -L argument.
if test "$name" != "" ; then
$rm a.out
$C_compiler conftest.c $i
$rm conftest
$C_compiler -o conftest conftest.c $i
# Did it work?
if test $? -eq 0 ; then
ldd_output=`ldd a.out`
ldd_output=`ldd conftest`
libname=`eval \\$echo \"$libname_spec\"`
deplib_matches=`eval \\$echo \"$library_names_spec\"`
set dummy $deplib_matches
@ -1838,15 +1838,15 @@ extern \"C\" {
#undef dld_preloaded_symbols
#if defined (__STDC__) && __STDC__
# define __ptr_t void *
# define lt_ptr_t void *
#else
# define __ptr_t char *
# define lt_ptr_t char *
#endif
/* The mapping between symbol names and symbols. */
struct {
char *name;
__ptr_t address;
lt_ptr_t address;
}
dld_preloaded_symbols[] =
{\
@ -1854,25 +1854,25 @@ dld_preloaded_symbols[] =
if test -n "$export_symbols"; then
echo >> "$output_objdir/$dlsyms" "\
{\"${output}\", (__ptr_t) 0},"
sed 's/^\(.*\)/ {"\1", (__ptr_t) \&\1},/' < "$export_symbols" >> "$output_objdir/$dlsyms"
{\"${output}\", (lt_ptr_t) 0},"
sed 's/^\(.*\)/ {"\1", (lt_ptr_t) \&\1},/' < "$export_symbols" >> "$output_objdir/$dlsyms"
fi
for arg in $dlprefiles; do
name=`echo "$arg" | sed -e 's%^.*/%%'`
echo >> "$output_objdir/$dlsyms" "\
{\"$name\", (__ptr_t) 0},"
{\"$name\", (lt_ptr_t) 0},"
eval "$NM $arg | $global_symbol_pipe > '$nlist'"
if test -f "$nlist"; then
sed 's/^\(.*\) \(.*\)$/ {"\1", (__ptr_t) \&\2},/' < "$nlist" >> "$output_objdir/$dlsyms"
sed 's/^\(.*\) \(.*\)$/ {"\1", (lt_ptr_t) \&\2},/' < "$nlist" >> "$output_objdir/$dlsyms"
else
echo '/* NONE */' >> "$output_objdir/$dlsyms"
fi
done
$echo >> "$output_objdir/$dlsyms" "\
{0, (__ptr_t) 0}
{0, (lt_ptr_t) 0}
};
#ifdef __cplusplus