H-Series Application Migration Guide (H06.03+)

Native C and C++ Migration Tasks
H-Series Application Migration Guide—429855-006
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Library Names Changed
The following C++ library migrations should require no additional source code
changes:
•
C++ VERSION2 on G-series to C++ VERSION2 on H-series
•
C++ VERSION3 on G-series to C++ VERSION3 on H-series
The following migrations will likely require source code changes:
•
C++ VERSION1 on G-series to C++ VERSION2 or VERSION3 on H-series
•
C++ VERSION2 on G-series to C++ VERSION3 on H-series
For this migration, It is recommended that you first convert to C++ VERSION3 on a
G-series system, then to C++ VERSION3 on an H-series system.
Library Names Changed
The C++ libraries in the H-series RVUs are implemented as DLLs and have new
names. If you are explicitly using eld to link as a separate step, you need to change the
library names specified in the eld command. See Table 2-3 on page 2-6 for the new H-
series library names.
Tools.h++ Version 6 Class Library Not Supported
Two versions of the Tools.h++ class library, version 6.1 and version 7, have been
available since the D45 and G05 RVUs. Tools.h++ version 6.1 uses VERSION1 of the
Standard C++ Library. Tools.h++ version 7 uses VERSION2 of the Standard C++
Library. The H-series RVUs support only version 7 of Tools.h++. Programs using
earlier versions of Tools.h++ must be converted to use Tools.h++ version 7 and
VERSION2 of the C++ Standard Library.
The VERSION3 C++ run-time library does not support any version of Tools.h++.
Therefore, if you migrate to the VERSION3 run-time library from either the VERSION1
or VERSION2 run-time library, you need to make some additional code changes for the
removal of Tools.h++.
Toolsh++ TLHMAP File Names Changed
On H-series systems, the names of certain files listed in the TLHMAP file have
changed. The changed files are:
To avoid compilation errors, make sure you specify the new H-series file names if you
are using your own private map file.
G-Series File Name H-Series File Name
generich rwgenerh
locale3h rwlocalh
newh rwnewh
regexph rwregexh