I have built a libpcre2-8.dll with the help of this Git Repo.
I'm now trying to access the function pcre2_compile from an ABL (Progress) program. (Progress is an old 4GL Language). I'm constantly hitting the error
Could not find the entrypoint _pcre2_compile@40. (3260)
I've already tried many things but it still doesn't work.
The Dynamic Library is 64 bit and Progress is also running in 64 bit.
In ABL (Progress) you can specify the LIBRARY-CALLING-CONVENTION but whether I set it to STDCALL or CDECL or just don't specify it, the error remains the same.
This is a snippet of the Progress ABL I'm trying to execute the function: (code comes from this Git Repo, which works, but only for 32 bit)
PROCEDURE pcre2_compile :
DEFINE INPUT PARAMETER pattern AS CHARACTER. /* const char * */
DEFINE INPUT PARAMETER options AS INTEGER. /* int */
DEFINE OUTPUT PARAMETER errcodeptr AS INTEGER. /* int * */
DEFINE OUTPUT PARAMETER errptr AS MEMPTR. /* const char ** */
DEFINE OUTPUT PARAMETER erroffset AS MEMPTR. /* int * */
DEFINE INPUT PARAMETER tableptr AS INTEGER. /* const unsigned char * */
DEFINE OUTPUT PARAMETER result AS MEMPTR. /* pcre * */
DEFINE VARIABLE libName AS CHARACTER NO-UNDO.
DEFINE VARIABLE hCall AS HANDLE NO-UNDO.
libName = get-library().
CREATE CALL hCall.
ASSIGN
hCall:CALL-NAME = "pcre2_compile"
hCall:LIBRARY = "lib/libpcre2-8.dll"
//hCall:LIBRARY-CALLING-CONVENTION = "STDCALL"
hCall:CALL-TYPE = DLL-CALL-TYPE
hCall:NUM-PARAMETERS = 6
hCall:RETURN-VALUE-DLL-TYPE = "MEMPTR".
hCall:SET-PARAMETER(1, "CHARACTER", "INPUT" , pattern ).
hCall:SET-PARAMETER(2, "LONG" , "INPUT" , options ).
hCall:SET-PARAMETER(3, "HANDLE TO LONG" , "OUTPUT", errcodeptr ).
hCall:SET-PARAMETER(4, "MEMPTR" , "OUTPUT", errptr ).
hCall:SET-PARAMETER(5, "MEMPTR" , "OUTPUT", erroffset ).
hCall:SET-PARAMETER(6, "LONG" , "INPUT" , tableptr ).
hCall:INVOKE().
ASSIGN result = hCall:RETURN-VALUE.
DELETE OBJECT hCall.
END PROCEDURE.
What am I missing?
Update: Checked with Dependency Walker and the functions seem to be visible. They do have a _8 suffix... But even when trying pcre2_compile_8 it still gives me the same error.
So the problem was that the name of the entry point was "pcre2_compile_8" instead of "pcre2_compile"... Wanted to delete the question because now it looks quite dumb but leaving it anyway...