z/OS V1R9.0 UNIX System Services Command ... - Christian Grothoff

makedepend
The following options correspond to the z/OS UNIX c89,cc,c++ compiler options.
For more information about these options and their corresponding usage notes, see
c89 — Compiler invocation using host environment variables.
–+ Specifies that all source files are to be recognized as C++ source files. All
file.s, file.o, and file.a files will continue to be recognized as assembler
source, object, and archive files respectively. However, any C file.c or file.i
files will be processed as corresponding C++ file.C or file.i files, and any
other file suffix which would otherwise be unrecognized will be processed
as a file.C file.
–D name[=value]
Defines a C or C++ macro for use in compilation. If only name is provided,
a value of 1 is used for the macro it specifies. For information about macros
that c89/cc/c++ automatically define, see Usage Note 2. Also see Usage
Note 3.
–Idir1[,dir2]...
Note: The –I option is an uppercase i, not a lowercase L.
–I specifies the directories to be used during compilation in searching for
include files (also called header files).
Absolute pathnames specified on #include directives are searched exactly
as specified. The directories specified using the –I option or from the usual
places are not searched.
If absolute pathnames are not specified on #include directives, then the
search order is as follows:
1. Include files enclosed in double quotes (") are first searched for in the
directory of the file containing the #include directive. Include files
enclosed in angle-brackets (< >) skip this initial search.
2. The include files are then searched for in all directories specified by the
–I option, in the order specified.
3. Finally, the include files are searched for in the usual places. (See
Usage Note 1 for a description of the usual places.)
You can specify an MVS data set name as an include file search directory.
Also, MVS data set names can explicitly be specified on #include
directives. You can indicate both by specifying a leading double slash (//).
For example, to include the include file DEF that is a member of the MVS
PDS ABC.HDRS, code your C or C++ source as follows:
#include
MVS data set include files are handled according to z/OS XL C/C++
compiler conversion rules (see Usage Note 1).. When specifying an
#include directive with a leading double slash (in a format other than
#include and #include), the specified name is
paired only with MVS data set names specified on the –I option. That is,
when you explicitly specify an MVS data set name, any hierarchical file
system (HFS) directory names specified on the –I option are ignored.
–0, –O (–1), –2, –3
Specifies the level of compiler optimization (including inlining) to be used.
The level –1 (number one) is equivalent to –O (letter capital O). The level
–3 gives the highest level of optimization. The default is –0 (level zero), no
optimization and no inlining, when not using IPA (Interprocedural Analysis).
416 z/OS V1R9.0 UNIX System Services Command Reference