6.5 Files generated when targeting C

• .c files are C source code.
• .o files are object code (generated by C compilers other than MSVC).
• .obj files are object code (generated by MSVC).
• .pic_o files are object code files that contain position-independent (PIC) code.

.mh and .mih files are C header files generated by the Mercury compiler. Their non-standard extensions are necessary to avoid conflicts with system header files.

• .mh files contain the declarations of C function versions of Mercury predicates and/or functions that are exported to C code by ‘foreign_export’ pragmas written by programmers. They are intended to be #included by the user-written C code that the ‘foreign_export’ pragmas were intended for.
• .mih files are C header files that are part of the Mercury implementation. They are intended to be #included only by C source files that are generated automatically by the Mercury compiler.