Table C-2. HP-UX aCC and g++ Compiler Switches Comparison Table
HP aCC Option[3] | GNU g++ Option[4] | Description |
|---|
-.suffix | None | The suffix parameter represents the character or characters to be used as the output filename suffix. |
-Aa | -ansi -std=standard | Instructs the compiler to use Koenig lookup and strict ANSI for scope rules. |
-AA | -std=c++98 (close option found) | Conforms to the ISO C++ standard. |
-AC89 | -std=c89 | Invokes the compiler in ANSI C89 compilation mode. |
-AC99 | -std=c99[5] (also invoke pendantic flag to receive all diagnostics) | Invokes the compiler in ANSI C99 compilation mode with its features. |
-Ae | -std=gnu89 | Invokes as an ANSI C compiler, with additional support for HP C or GNU language extensions. |
-AOa -AOe | -std=iso9899:1990 -std=iso9899:199409 (invoke with Ox flag for optimization options) | In addition to specifying the ANSI C language dialect, allows the optimizer to aggressively exploit the assumption that the source code conforms to the ANSI programming language C standard ISO 9899:1990. |
-AP | None | Turns off -AA mode and uses the older C++ runtime libraries. |
-b | None | Creates a shared library rather than an executable file. |
-c | -c | Compiles one or more source files but does not enter the linking phase. |
-C | -C | Prevents the preprocessor from stripping comments. |
-dynamic | -Wl,-Bdynamic | Produces dynamically bound executables. |
-Dname[=def] | -Dname=def | Defines a symbol name (name) to the preprocessor, as if defined by the preprocessing directive #define. |
+d | -fno-default- inline (close but not exact) | Prevents the expansion of inline functions. |
| | -fno-inline | |
+dryrun | -### | Displays the options passed, but does not execute. |
-ext +e | None | Enables platform-dependent C++ standards extensions. |
-E | -E | Runs only the preprocessor on the named C++ files and sends the result to standard output (stdout). |
-fast | None | Selects a combination of optimization options for optimum execution speed for reasonable build times. |
-fpeval= precision | None | Specifies the minimum precision to use for floating-point expression evaluation. |
-g[0|1] | -g[1|2|3] | Emits different levels of debug information. |
-G | -pg | Compiles and creates the executable file instrumented for use with gprof. |
-Idirs -I- | -I | Indicates an optional list of -Idirectory specifications. |
-mt | D_REENTRANT -lpthread | Compiles multithreaded. |
-n | -shared -Bshareable | Causes the program file produced by the linker to be marked as sharable. |
-N | None | Causes the program file produced by the linker to be marked as unsharable. |
-o outfile | -o outfile | Causes the output of the compilation to be placed in outfile. |
-O | -O2 | Invokes the optimizer to perform level 2 optimizations. |
-p | -p | Compiles and creates the executable file instrumented for use with prof. |
-P | None | Only preprocesses the files named on the command line without invoking further phases. Leaves the result in corresponding files with the suffix .i. |
-q | None | Causes the output file from the linker to be marked as demand-loadable. |
-Q | None | Causes the program file from the linker to be marked as not demand-loadable. |
-r | -r | Retains relocation information in the output file for subsequent relinking. |
-s | -Wl,-s | Causes the executable program file created by the linker to be stripped of symbol table information. |
-S | -S | Compiles the named program and leaves the assembly language output in a corresponding file with an .s suffix. |
-Uname | -u -undefined=symbol | name is the symbol name whose definition is removed from the preprocessor. |
-v | -v | Enables verbose mode, sending a step-by-step description of the compilation process to stderr. |
-V-version | --version | Displays the version numbers of the current compiler and linker (if the linker is executed). |
-w | -w | Suppresses all warning messages. |
-Wc,-ansi_for_scope,[on][off] | -ffor-scope-fno-for-scope | Enables or disables the standard scoping rules for init declarations in for statements. |
-Wc,-koenig_lookup,[on][off] | None | Enables or disables standard argument-dependent lookup rules (also known as Koenig lookup). |
-Wx,arg1 [,arg2,..,argn] | -Wx,arg1 [,arg2,..,argn] | Passes the arguments arg1 through argn to the subprocess x of the compilation. |
-Y | None | Enables Native Language Support (NLS) of 8-bit, 16-bit, and 4-byte EUC characters in comments, string literals, and character constants. |
-z | Default | Disallows dereferencing of null pointers at runtime. |
-Z | None | Allows dereferencing of null pointers at runtime. |
+help | None | Invokes the initial menu window of HP aC++ Online Programmer's Guide. |
+ild | -Wl,-i | Specifies incremental linking. |
+noeh | None | Disables exception handling. |
+nostl | None | Eliminates references to the standard header files and libraries bundled with HP aC++. |
+O[no]initcheck | -Wuninitialized -O | The initialization checking feature. |
+sb | None | Specifies unqualified char/short/int/ long/long long bitfields as signed. |
+tls=[static|dynamic] | -ftls-model=model | Specifies whether references to thread local data items are to be performed according to the mode. |
+ub | None | Specifies unqualified char/short/int/ long/long long bitfields as unsigned. |
+uc | None | Specifying +uc causes an unqualified (plain) char data type to be treated as unsigned char. |
+Warg1 [,arg2,..argn] | None | Selectively suppresses any specified warning messages, where arg1 through argn are valid compiler warning message numbers. |
+We | -Werror | Interprets all warning and future error messages as errors. |
+Wearg1 [,arg2,..argn] | None | Selectively interprets any specified warning or future error messages as errors. arg1 through argn are valid compiler warning message numbers. |
+Wwarg1 [,arg2,..argn] | None | Selectively treats compiler warnings as warnings. arg1 through argn are valid compiler message numbers. |
-Wl,+FPVZO | None | Hardware trap FPEs. |
