Building Mimer Applications on OpenVMS

There are three native API’s provided in the Mimer distribution. Each API has a shared library and an options file (.OPT) for linking. There is also a logical name for each shared library, defined by the SYS$MANAGER:MIMER$SETUP_xxxxx.COM procedure:

The options file directs the linker to use the logical name to find the shareable image. For example, MIMER$LIB:MIMER$SQL.OPT contains:

MIMER$SQL/SHARE

 

If you link your application with this options file, the resulting program will contain a reference to the shared library named MIMER$SQL (without a version suffix), as shown by the following example:

$ LINK EXAMPLE,MIMER$LIB:MIMER$SQL/OPT

$ ANALYZE/IMAGE/OUT=X.TMP EXAMPLE

$ SEA X.TMP "SHAREABLE IMAGE LIST" /WIN=(0,10)

    Shareable Image List

        MIMER$SQL

            (LESS/EQUAL, 11., 1105.)

        DECC$SHR

            LESS/EQUAL, 1., 1.)

 

If you try to run this program without a definition of the logical name MIMER$SQL, the shareable image will not be found.

$ RUN EXAMPLE

%DCL-W-ACTIMAGE, error activating image MIMER$SQL

-CLI-E-IMAGEFNF, image file not found SIV$DKA100:[SYS0.SYSCOMMON.][SYSLIB]MIMER$SQL.EXE;

 

Use SYS$MANAGER:MIMER$SETUP_xxxxx.COM to select the Mimer version to use, which defines the required logical names.

$ @SYS$MANAGER:MIMER$SETUP_1108A

$ SHOW LOG MIMER$SQL

   "MIMER$SQL" = "SYS$SHARE:MIMER$SQL_1108A.EXE" (LNM$PROCESS_TABLE)

$ RUN EXAMPLE

INFORMATION_SCHEMA ASSERTIONS VIEW

INFORMATION_SCHEMA ATTRIBUTES VIEW

INFORMATION_SCHEMA CHARACTER_SETS VIEW

INFORMATION_SCHEMA CHECK_CONSTRAINTS VIEW

...

 

Since EXAMPLE.EXE is linked to a logical name, the SYS$MANAGER:MIMER$SETUP_xxxxx.COM procedure will set the version of the Mimer libraries the program uses, without having to re-link.

Building example programs

The directory MIMER$EXAMPLES contains numerous example programs you can build on OpenVMS. Please read the supplied .TXT files for more information.

$ DIR MIMER$EXAMPLES:*.TXT

 

Directory SYS$COMMON:[MIMER1108A.EXAMPLES]

 

README_ESQL.TXT;1   README_MIMERAPI.TXT;1                   README_MSQL.TXT;1