z/OS XL C/C++

z/OS V1R7 offers, as an optional priced feature, the z/OS V1R7 XL C/C++ compiler.

This compiler shares a common code base, including IBM's most advanced compiler optimization technology, with other members of the XL C/C++ and XL Fortran compiler families.

z/OS V1R7 XL C/C++ offers the following performance and usability enhancements in this new release:

Compliance with C99 Standard
The z/OS V1R7 XL C/C++ compiler complies with the latest C99 programming language standard (ISO/IEC 9899:1999). A new compiler invocation command, c99, is provided for use with the xlc utility to compile C99 program code.

LNew Compiler Options
z/OS V1R7 XL C/C++ introduces the following new compiler options:

• ARCHITECTURE(7)

• LANGLVL(ANSISINIT)

• LANGLVL(EXTC89)

• LANGLVL(EXTC99)

• LANGLVL(STDC89)

• LANGLVL(STDC99)

• TARGET(zOSV1R7)

• TUNE(7)

Support for CICS Transaction Server 3.1 & 3.2 Integrated Translator
Integrated CICS translation is supported for use with CICS Transaction Server for z/OS V3R1 and above. The integrated CICS translator enables users to embed CICS statements in C/C++ source and pass them through the compiler without the need for an explicit preprocessing step. This permits a more seamless operation of C/C++ within the CICS environment. See APAR PK48792 for more information.