z/OS XL C/C++

z/OS V1R6 offers, as an optional priced feature, a C/C++ compiler with the following performance and usability enhancements for the V1R6 release:

New compiler suboptions
z/OS V1R6 C/C++ introduces the following new compiler suboptions:

• ARCH(6)

• TARGET(zOSV1R6)

• TUNE(6)

New cataloged procedures
z/OS V1R6 C/C++ introduces the following new cataloged procedures:

• CBCQB - to bind a 64-bit C++ program

• CBCQBG - to bind and run a 64-bit C++ program

• CBCQCB - to compile and bind a 64-bit program

• CBCQCBG - to compile, bind, and run a 64-bit program

• CCNQPD1B - to bind the results of IPA(LINK,PDF1) for 64-bit applications

• EDCQB - to bind 64-bit C programs

• EDCQBG - to bind and run 64-bit C programs

• EDCQCB - to compile and bind a 64-bit C program

• EDCQCBG - to compile, bind, and run a 64-bit C program

New keyword
z/OS V1R6 C/C++ introduces the following new keyword, which is used in a declaration to specify an alignment for a declared variable:

• __attribute__((aligned(n)))

For further information on this keyword, see http://gcc.gnu.org/onlinedocs.

New xlc compiler invocation utility.
This release includes the new xlc compiler invocation utility, which supports the following invocation commands that accept AIX option syntax:

• c89 - to compile ANSI compliant C programs

• cc - to compile non-standard C programs

• xlc - to compile any C program

This release includes the following additional invocation commands, which can also be used to compile C++ code:

• c++

• cxx

• xlC

• xlc++

All of the invocation commands listed above can have the following suffixes:

• _x - to compile the program with XPLINK (for example, c89_x)

• _64 - to compile the program in 64-bit mode (for example, c89_64)