D - Link error using template in library - 1 attachment
- Patrick Down (223/223) Apr 20 2003 I'm getting a linker error while trying to make
Patrick Down <pat codemoon.com>
I'm getting a linker error while trying to make
a library that uses a template.
---------------------------------------------------------
Here is the template library file: temp.d
---------------------------------------------------------
Z:\D\errreport1>type temp.d
module temp;
template Foo(Type)
{
bit isSorted(Type[] array, int delegate(Type a,Type b) cmp)
{
for(int i = 1; i < array.length; ++i)
{
if(cmp(array[i-1],array[i]) > 0)
return false;
}
return true;
}
void insertionSort(Type array[], int delegate(Type a,Type b) cmp)
in
{
assert(cmp);
}
out
{
assert(isSorted(array,cmp));
}
body
{
for (int i=1; i < array.length; i++)
{
Type index = array[i];
int j = i;
while ((j > 0) && cmp(index,array[j-1]) == -1)
{
array[j] = array[j-1];
j = j - 1;
}
array[j] = index;
}
}
}
---------------------------------------------------------
Compile it and make it into a library
---------------------------------------------------------
Z:\D\errreport1>dmd -c temp.d
Z:\D\errreport1>lib -c temp.lib temp.obj
Digital Mars Librarian Version 8.00n
Copyright (C) Digital Mars 2000-2002 All Rights Reserved
www.digitalmars.com
Digital Mars Librarian complete.
---------------------------------------------------------
Here is the library that uses the template: usetemp.d
---------------------------------------------------------
Z:\D\errreport1>type usetemp.d
module usetemp;
import temp;
alias instance Foo(int).insertionSort intSort;
void bar(int[] arr)
{
intSort(arr,
delegate int(int a,int b)
{
if(a < b) return -1;
else if(a == b) return 0;
else return 1;
});
}
---------------------------------------------------------
Compile it and make it into a library
---------------------------------------------------------
Z:\D\errreport1>dmd -c usetemp.d
Z:\D\errreport1>lib -c usetemp.lib usetemp.obj
Digital Mars Librarian Version 8.00n
Copyright (C) Digital Mars 2000-2002 All Rights Reserved
www.digitalmars.com
Digital Mars Librarian complete.
---------------------------------------------------------
Here is the test file
---------------------------------------------------------
Z:\D\errreport1>type err.d
import usetemp;
int main(char[][] argv)
{
int[] test;
test ~= 5;
test ~= 12;
test ~= 1;
test ~= 3;
test ~= 15;
test ~= 45;
test ~= 12;
test ~= 9;
bar(test);
return 0;
}
---------------------------------------------------------
Try to put it all together and get a linker error
---------------------------------------------------------
Z:\D\errreport1>dmd err.d usetemp.lib temp.lib
Z:\tools\dmd\bin\link.exe err,,,usetemp.lib+temp.lib+user32+kernel32/noi;
OPTLINK (R) for Win32 Release 7.50B1
Copyright (C) Digital Mars 1989 - 2001 All Rights Reserved
temp.lib
Warning 140: Library probably needs FIXLIB
usetemp.lib(usetemp)
Error 42: Symbol Undefined _assert_temp
usetemp.lib(usetemp)
Error 42: Symbol Undefined _array_temp
--- errorlevel 2
---------------------------------------------------------
Try compiling in the template directly same problem
---------------------------------------------------------
Z:\D\errreport1>dmd err.d usetemp.lib temp.d
Z:\tools\dmd\bin\link.exe err+temp,,,usetemp.lib+user32+kernel32/noi;
OPTLINK (R) for Win32 Release 7.50B1
Copyright (C) Digital Mars 1989 - 2001 All Rights Reserved
usetemp.lib(usetemp)
Error 42: Symbol Undefined _assert_temp
usetemp.lib(usetemp)
Error 42: Symbol Undefined _array_temp
--- errorlevel 2
---------------------------------------------------------
Finally this works
---------------------------------------------------------
Z:\D\errreport1>dmd err.d usetemp.d temp.d
Z:\tools\dmd\bin\link.exe err+usetemp+temp,,,user32+kernel32/noi;
---------------------------------------------------------
DMD version
---------------------------------------------------------
Z:\D\errreport1>dmd
Digital Mars D Compiler Beta v0.61
Copyright (c) 1999-2003 by Digital Mars written by Walter Bright
www.digitalmars.com/d/index.html
Usage:
dmd files.d ... { -switch }
files.d D source files
-c do not link
-d allow deprecated features
-g add symbolic debug info
-gt add trace profiling hooks
-v verbose
-O optimize
-oobjdir write .obj files to directory objdir
-Ipath where to look for imports
-Llinkerflag pass linkerflag to link
-debug compile in debug code
-debug=level compile in debug code <= level
-debug=ident compile in debug code identified by ident
-inline do function inlining
-release compile release version
-unittest compile in unit tests
-version=level compile in version code >= level
-version=ident compile in version code identified by ident
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end
Apr 20 2003