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FATAL_EXIT_CODESUCCESS_EXIT_CODEUSE_C_ALLOCAalloca
provided by libiberty.a. This only affects how some parts of the
compiler itself allocate memory. It does not change code generation.
When GCC is built with a compiler other than itself, the C alloca
is always used. This is because most other implementations have serious
bugs. You should define this macro only on a system where no
stack-based alloca can possibly work. For instance, if a system
has a small limit on the size of the stack, GCC's builtin alloca
will not work reliably.
COLLECT2_HOST_INITIALIZATIONcollect2 is being initialized.
GCC_DRIVER_HOST_INITIALIZATIONHOST_LONG_LONG_FORMATlong
long to functions like printf. The default value is
"ll".
In addition, if configure generates an incorrect definition of any of the macros in auto-host.h, you can override that definition in a host configuration header. If you need to do this, first see if it is possible to fix configure.