[Mono-bugs] [Bug 63130][Blo] New - P/Invoke fails to resolve platform specific prefixes and suffixes

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Changed by infodate@aster.pl.

http://bugzilla.ximian.com/show_bug.cgi?id=63130

--- shadow/63130	2004-08-16 06:40:55.000000000 -0400
+++ shadow/63130.tmp.13537	2004-08-16 06:40:55.000000000 -0400
@@ -0,0 +1,104 @@
+Bug#: 63130
+Product: Mono: Class Libraries
+Version: unspecified
+OS: SUSE 9.1
+OS Details: Pro all patches applied
+Status: NEW   
+Resolution: 
+Severity: Unknown
+Priority: Blocker
+Component: CORLIB
+AssignedTo: mono-bugs@ximian.com                            
+ReportedBy: infodate@aster.pl               
+QAContact: mono-bugs@ximian.com
+TargetMilestone: ---
+URL: 
+Cc: 
+Summary: P/Invoke fails to resolve platform specific prefixes and suffixes
+
+Description of Problem:
+
+In some situations P/Invoke call fails with DllNotFoundException.
+
+
+Steps to reproduce the problem:
+
+On SuSE 9.1 Pro
+
+glue.cpp 
+ 
+extern "C" { 
+ 
+unsigned long long get_processor_ticks_p() { 
+ 
+    unsigned long long result = 0; 
+ 
+    __asm__ __volatile__ (  
+    "rdtsc \n\t" 
+   : "=A" (result) 
+   );  
+ 
+     return result; 
+} 
+ 
+} 
+ 
+after creating static and shared libs with libtool everything is installed 
+in /usr/local/lib as: 
+libglue.so.0.0.0 
+libglue.so.0 (symlink to 0.0.0) 
+libglue.so (symlink to so.0.0.0) 
+ 
+ldconfig is run and library is properly registered for loading 
+( /etc/ld.so.conf contains /usr/local/lib and /etc/ld.so.cache contains 
+required entry) and than can be called from the following code: 
+ 
+test.cpp 
+ 
+#include <iostream> 
+#include glue.h 
+ 
+using namespace std; 
+ 
+int main() { 
+ 
+    cout<<"Test processor ticks: "; 
+    cout<<get_processor_ticks_p()<<endl; 
+    return 0; 
+} 
+ 
+compiled with -lglue linking directive (code is linked to shared library). 
+ 
+The following C# call fails 
+ 
+[DllImport("glue", CallingConvention=CallingConvention.Cdcel)] 
+static extern ulong get_processor_ticks_p(); 
+ 
+static void Main(string[] args) { 
+ 
+    Console.WriteLine("P/Invoke call: {0}", 
+     get_processor_ticks_p()); 
+ 
+} 
+
+while changing DllImport assembly attribute to "libglue.so" removes the 
+error. 
+
+The above code works fine using "glue" with both Mono-1.0/1.0.1 and .NET 
+1.1 on WinXP.
+
+Actual Results:
+
+Exception is thrown while calling properly installed shared library 
+with "cross platform" name. P/Invoke routine does not handle properly 
+platform specific prefix "lib" and suffix ".so".
+
+
+Expected Results:
+
+Successfull call with P/Invoke with cross platform name "glue" instead 
+of "libglue.so".
+ 
+How often does this happen? 
+
+Everytime test is run