04-24-2013
Quote:
Originally Posted by
millsy5
Just wondering why using the exe that was generated using the C compiler doesn't work (as opposed to using the Unix compiled one).
I think you're confusing the concepts. In your original script you were trying to run a flat text file which happened to have a
.c extension. Its contents cannot be interpreted by a shell nor by "Unix" (assuming you're referring to the operating system).
So you basically forgot the step where you compile the code before running it.
This User Gave Thanks to verdepollo For This Post:
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LEARN ABOUT NETBSD
genassym
GENASSYM(1) BSD General Commands Manual GENASSYM(1)
NAME
genassym -- emit an assym.h file
SYNOPSIS
genassym [-c] [-f] C compiler invocation
DESCRIPTION
genassym is a shell script normally used during the kernel build process to create an assym.h file. This file defines a number of cpp con-
stants derived from the configuration information genassym reads from stdin. The generated file is used by kernel sources written in assem-
bler to gain access to information (e.g. structure offsets and sizes) normally only known to the C compiler.
Arguments to genassym are usually of the form ${CC} ${CFLAGS} ${CPPFLAGS} where ${CC} is the C compiler used to compile the kernel, while
${CFLAGS} and ${CPPFLAGS} are flag arguments to the C compiler. The script creates a C source file from its input. Then the C compiler is
called according to the script's arguments to compile this file.
Normally genassym instructs the C compiler to create an assembler source from the constructed C source. The resulting file is then processed
to extract the information needed to create the assym.h file. The -c flag instructs genassym to create slightly different code, generate an
executable from this code and run it. In both cases the assym.h file is written to stdout. The -f flag instructs genassym to create forth
code.
DIAGNOSTICS
Either self-explanatory, or generated by one of the programs called from the script.
SEE ALSO
genassym.cf(5)
HISTORY
The genassym command appeared in NetBSD 1.3 as ``genassym.sh'' in /usr/src/sys/kern. It became a userland utility in NetBSD 4.0.
BSD
April 13, 2010 BSD