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GENASSYM.CF(5)						      BSD File Formats Manual						    GENASSYM.CF(5)

NAME -- assym.h definition file DESCRIPTION
The file is used by genassym(1) to make constant C expressions known to assembler source files. Lines starting with '#' are dis- carded by genassym(1). Lines starting with include, ifdef, if, else or endif are preceded with '#' and passed otherwise unmodified to the C compiler. Lines starting with quote get passed on with the quote command removed. The first word after a define command is taken as a CPP identifier and the rest of the line has to be a constant C expression. The output of genassym(1) will assign the numerical value of this expression to the CPP identifier. export X is a shorthand for define X X. struct X remembers X for the member command and does a define X_SIZEOF sizeof(X). member X does a define X offsetof(<last struct>, X). config <ctype> <gcc constraint> <asm print modifier> can be used to customize the output of genassym(1). When producing C output, values are casted to <ctype> (default: long) before they get handed to printf. <gcc constraint> (default: n) is the constraint used in the __asm__ statements. <asm print modifier> (default: empty) can be used to force gcc to output operands in different ways then normal. The "a" modifier e.g. stops gcc from emitting immediate prefixes in front of con- stants for the i386 and m68k port. FILES
/usr/src/sys/arch/${MACHINE}/${MACHINE}/ SEE ALSO
genassym(1) HISTORY
The file appeared in NetBSD 1.3. BSD
August 18, 2005 BSD

Check Out this Related Man Page

BUILDER-CC(1)							 Debian GNU/Linux						     BUILDER-CC(1)

builder-cc - gcc wrapper to facilitate pentium-optimizations SYNOPSIS
export DEBIAN_BUILDARCH=architecture export DEBIAN_BUILDGCCVER=gcc-version gcc ... DESCRIPTION
The builder-cc wrapper is normally used by calling gcc as usual. If the environment variable DEBIAN_BUILDARCH is not set, builder-cc does nothing, and the real gcc is invoked with the specified arguments. When the DEBIAN_BUILDARCH environment variable is set, builder-cc invokes gcc with the specified arguments, plus -mcpu=DEBIAN_BUILDARCH -march=DEBIAN_BUILDARCH This has the effect of telling gcc to use architecture-specific optimizations without changing the command line. This is particularly useful for package builds. If DEBIAN_BUILDGCCVER is not set, builder-cc calls gcc.real. If DEBIAN_BUILDGCCVER is set, builder-cc calls gcc-DEBIAN_BUILDGCCVER instead. ENVIRONMENT
DEBIAN_BUILDARCH If set, the architecture to compile for. Useful values are pentium or pentiumpro. DEBIAN_BUILDGCCVER If set, the version of gcc to be invoked. Useful values are 3.0 or 2.95. NOTES
The real gcc is renamed gcc.real, and a diversion is registered with dpkg-divert(1). Thus builder-cc's idea of the default gcc is dictated by whatever package installed /usr/bin/gcc. SEE ALSO
gcc(1) Debian Project 2002-03-02 BUILDER-CC(1)
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