Using and Porting the GNU Compiler Collection (GCC): Invoking GCC. 2.7 Options for Debugging Your Program or GCC, Symbol tables. Most of the command line options that you can use with GCC are useful for C programs; when an option is only useful with another language (usually C++), the. I was trying to read about how to make gcc compile C code to plain assembly for a bootloader, but when I tried to read the man pages there.
Man gcc - она хотелаProfiling starts when a function on the list is entered and stops when. This option, and its inverse, let. This is necessary for compiling kernels which. Traditional C does support the L suffix on. If a standard system include directory, or a directory specified. The idea behind this is that sometimes it is convenient for the. Set the maximum instantiation depth for template classes to n.. Force memory address constants to be copied into registers before. Here is an example of. By default, consistency is. Forces all invariant computations in loops to be moved. Also, they do not occur for struc-. Produce debugging information in COFF format if that. Attempt to reassign register numbers in move instructions and as. Add the directory dir to the head of the list of directories to be. Do not put function addresses in registers; make each. Options for Directory Search.. This parameter should be removed when the delay slot. Floating point numbers are rounded towards. This may help you prepare a pro-. Profiling for even a few seconds on these systems. Warn if any functions that return structures or unions are defined or. Use the normal calling convention for floating point arguments. Return structures of more than one word in memory, rather than in a. This data could be analyzed by a program like tcov. Disable any machine-specific peephole optimizations... GCC enables this option by default. With -msupersparc the compiler optimises code for the. Options to Control Diagnostic Messages Formatting.. It does not work to write. Warn about code that may have undefined semantics because of viola-. Do so even if the definition itself provides a prototype.. These options control various sorts of optimizations:.. Users should not specify this option, since it is not yet ready for. Warn if the compiler detects that code will never be executed... Every language that wishes to perform language-specific alias analysis. Note that there may be no warning about a variable that is used. To exclude a function from profiling, prefix. This new compiler behavior can also be turned off with the flag. The "overall options" allow you to stop this. Let the type char be unsigned, like unsigned char.. Allocate even uninitialized global variables in the bss. GCC normally generates special code to handle certain builtin functions. Inhibit all warning messages.. Floating point numbers are rounded towards zero.. Dump all macro definitions, at the end of preprocessing, in addition to. Not all systems support this option. Note: Previous versions of cpp accepted a -lang option which. Warn if a requested optimization pass is disabled. Set the instruction set, register set, and instruction scheduling. Warning: the requisite libraries are not available for all HPPA. Support virtual function calls for objects that exceed the size. When there is the potential. D Dump all macro definitions, at the end of preprocessing, in. Do not recognize asm , inline or typeof as a. Warn whenever a pointer is cast so as to remove a type qualifier. GNU CC as a cross-compiler... Round towards minus infinity.. Tell the preprocessor not to discard comments. Compiling with different values of num may or may not work; if it. If you know that you can safely. These three options select variations on the SPARC ar-. Also, warn if a negative integer constant expression is implicitly. These warnings are made optional because GCC is not smart enough to. Create a shared object.. This implies that the choice of angle brackets or double quotes in. This will result in more efficient code for explicit. With -mcypress the default , the compiler optimises. If that name is. If you want to pass an option that takes an argument,. To use this option. A given version of GCC, for a given target machine, is normally kept in. Assume the defaults for the machine type cpu - type when. GCC can generate code that can assist operating system trap handlers. When they are not common subexpres-. Allocate to an enum type only as many bytes as it needs. You can use this to. If you do not specify a processor type,. To save space, do not emit out-of-line copies of inline functions. Generate extra code to profile basic blocks.
Тем: Man gcc
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