File naming conventions

.c

C source file

Implies --c90

.ac

C source file

Implies --c90 --arm

.tc

C source file

Implies --c90 --thumb

.cpp

.c++

.cxx

.cc

.CC

C++ source file

Implies --cpp

The compiler uses the suffixes .cc and .CC to identify files for implicit inclusion. See Implicit inclusion in the Compiler Reference Guide for more information.

.acpp

C++ source file

Implies --cpp --arm

.tcpp

C++ source file

Implies --cpp --thumb

.d

Dependency list file

.d is the default output filename suffix for files output using the ‑‑md option.

.h

C or C++ header file

--cpp --arm

.o

.obj

ARM object file

.s

ARM or Thumb assembly language source file.

For files in the input file list suffixed with .s, the compiler invokes the assembler, armasm, to assemble the file.

.s is the default output filename suffix for files output using either the option -S or --asm.

.lst

Error and warning list file

.lst is the default output filename suffix for files output using the ‑‑list option.

.pch

.pch is the default output filename suffix for files output using the ‑‑pch option.

.txt

.txt is the default output filename suffix for files output using the ‑S or ‑‑asm option in combination with the ‑‑interleave option.