70350a7985
ltdl do it. On win32 I'm using ltdl even the it considers my DLLs to NOT be a libtool archive, and it's making the symbol name transformation mess up. If I do it myself, I can avoid this.
92 lines
2.5 KiB
C++
92 lines
2.5 KiB
C++
#include <stdio.h>
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#include <stdlib.h>
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#include <assert.h>
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#define LT_SCOPE extern /* so that ltdl.h does not export anything */
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#include <ltdl.h>
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#define MAIN_DLL_EXPORT
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#include "main.h"
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#include "modules.h"
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const char *version_string = "uselib-test6-1.0";
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#if 1
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// This lines forces main.cc to link in the functions associated with
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// the new operator. If there is no "new" in the whole executable, the
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// Solaris linker decides not to link in __builtin_new, giving this error
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// when you try to load a module:
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// fatal: relocation error: file .libs/libmodule1.so.0:
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// symbol __builtin_new: referenced symbol not found
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int *force_builtin_new = new int;
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#endif
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int register_module (const char *name)
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{
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printf ("register_module was called by module '%s'\n", name);
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return 0;
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}
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int load_module (const char *fmt, const char *modname)
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{
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char buf[512];
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sprintf (buf, fmt, modname);
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printf ("loading module from VARIES{%s}\n", buf);
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lt_dlhandle handle = lt_dlopenext (buf);
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printf ("handle is VARIES{%p}\n", handle);
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if (!handle) {
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printf ("lt_dlopen error: %s\n", lt_dlerror ());
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return -1;
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}
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char sym[1024];
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sprintf (sym, "%s_LTX_%s", modname, "module_init");
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modload_func func = (modload_func) lt_dlsym (handle, sym);
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printf ("module_init function is at VARIES{%p}\n", func);
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if (func != NULL) {
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printf ("Calling module_init\n");
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DeviceInterface *device = (*func)();
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if (device) {
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printf ("%s's device is called '%s'\n", modname, device->getName ());
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printf ("%s can do '%s'\n", modname, device->getFeatures ());
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printf ("Calling the device's print method:\n ");
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device->print (stdout);
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printf ("\n");
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} else {
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printf ("%s has not defined any device\n", modname);
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}
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} else {
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printf ("lt_dlsym error: %s\n", lt_dlerror ());
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return -1;
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}
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return 0;
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}
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int main (int argc, char **argv)
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{
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printf ("start\n");
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if (lt_dlinit () != 0) {
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printf ("lt_dlinit error: %s\n", lt_dlerror ());
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return -1;
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}
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#ifdef WIN32
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const char *module_name_format = "%s";
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#else
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const char *module_name_format = "lib%s.la";
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#endif
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printf ("loading module1\n");
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// try to load module1
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if (load_module (module_name_format, "module1") < 0) {
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printf ("load module1 failed\n");
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}
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if (load_module (module_name_format, "module2") < 0) {
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printf ("load module2 failed\n");
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}
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int arg;
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for (int arg=1; arg < argc; arg++) {
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if (load_module (module_name_format, argv[arg]) < 0) {
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printf ("load %s failed\n", argv[arg]);
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}
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}
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printf ("stop\n");
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exit (77);
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}
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