(as.info)Invoking


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Command-Line Options
********************

   This chapter describes command-line options available in *all*
versions of the GNU assembler; Note: Machine Dependencies., for
options specific to particular machine architectures.

   If you are invoking `as' via the GNU C compiler (version 2), you can
use the `-Wa' option to pass arguments through to the assembler.  The
assembler arguments must be separated from each other (and the `-Wa')
by commas.  For example:

     gcc -c -g -O -Wa,-alh,-L file.c

emits a listing to standard output with high-level and assembly source.

   Usually you do not need to use this `-Wa' mechanism, since many
compiler command-line options are automatically passed to the assembler
by the compiler.  (You can call the GNU compiler driver with the `-v'
option to see precisely what options it passes to each compilation
pass, including the assembler.)

* a
-a[dhlns] enable listings
* D
-D for compatibility
* f
-f to work faster
* I
-I for .include search path
* K
-K for difference tables
* L
-L to retain local labels
* o
-o to name the object file
* R
-R to join data and text sections
* statistics
-statistics to see statistics about assembly
* v
-v to announce version
* W
-W to suppress warnings
* Z
-Z to make object file even after errors

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