компилятор C и C ++ проекта GNU  (GNU project C and C++ compiler)
  
Параметры подробно (Options detail)
Solaris 2
These -m options are supported on Solaris 2:
       -mclear-hwcap
           -mclear-hwcap tells the compiler to remove the hardware
           capabilities generated by the Solaris assembler.  This is
           only necessary when object files use ISA extensions not
           supported by the current machine, but check at runtime
           whether or not to use them.
       -mimpure-text
           -mimpure-text, used in addition to -shared, tells the
           compiler to not pass -z text to the linker when linking a
           shared object.  Using this option, you can link position-
           dependent code into a shared object.
           -mimpure-text suppresses the "relocations remain against
           allocatable but non-writable sections" linker error message.
           However, the necessary relocations trigger copy-on-write, and
           the shared object is not actually shared across processes.
           Instead of using -mimpure-text, you should compile all source
           code with -fpic or -fPIC.
       These switches are supported in addition to the above on Solaris
       2:
       -pthreads
           This is a synonym for -pthread.