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> The hack that I used is to create a new pseudo directive in gas called > .compiler that takes a string argument in order to update the Compilation > Unit for each module. I modified ASM_IDENTIFY_GCC to include this pseudo > directive. However, that also means I needed to include the directive in > gcc/config/pa/*.asm. For MPE and the HP3000, that's OK because gas is the > only assembler available there. However, on HP-UX it is possible to not > use gas, and these directives would break that assembler. > > Is there a better way to approach this in order to communicate the pertinent > information to gas in order to generate the SOM Compilation Unit records > in BFD for MPE without breaking things elsewhere? Where the existing ports need to emit this information, they use FILE_ASM_OP - usually defined to something like file or .file, or better, output_file_directive . output_file_directive uses ASM_OUTPUT_MAIN_SOURCE_FILENAME or ASM_OUTPUT_SOURCE_FILENAME, if defined. output_file_directive can be called from ASM_FILE_START; e.g. look at config/svr4.h .