[PATCH] remove gcc-2 checks (a1365647) · Commits · 戴 / test

Documentation/Changes

+5 −26

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		@@ -31,8 +31,6 @@ al espa
		Eine deutsche Version dieser Datei finden Sie unter
		<http://www.stefan-winter.de/Changes-2.4.0.txt>.

		Last updated: October 29th, 2002

		Chris Ricker (kaboom@gatech.edu or chris.ricker@genetics.utah.edu).

		Current Minimal Requirements
		@@ -48,7 +46,7 @@ necessary on all systems; obviously, if you don't have any ISDN
		hardware, for example, you probably needn't concern yourself with
		isdn4k-utils.

		o Gnu C 2.95.3 # gcc --version
		o Gnu C 3.2 # gcc --version
		o Gnu make 3.79.1 # make --version
		o binutils 2.12 # ld -v
		o util-linux 2.10o # fdformat --version
		@@ -74,26 +72,7 @@ GCC
		---

		The gcc version requirements may vary depending on the type of CPU in your
		computer. The next paragraph applies to users of x86 CPUs, but not
		necessarily to users of other CPUs. Users of other CPUs should obtain
		information about their gcc version requirements from another source.

		The recommended compiler for the kernel is gcc 2.95.x (x >= 3), and it
		should be used when you need absolute stability. You may use gcc 3.0.x
		instead if you wish, although it may cause problems. Later versions of gcc
		have not received much testing for Linux kernel compilation, and there are
		almost certainly bugs (mainly, but not exclusively, in the kernel) that
		will need to be fixed in order to use these compilers. In any case, using
		pgcc instead of plain gcc is just asking for trouble.

		The Red Hat gcc 2.96 compiler subtree can also be used to build this tree.
		You should ensure you use gcc-2.96-74 or later. gcc-2.96-54 will not build
		the kernel correctly.

		In addition, please pay attention to compiler optimization. Anything
		greater than -O2 may not be wise. Similarly, if you choose to use gcc-2.95.x
		or derivatives, be sure not to use -fstrict-aliasing (which, depending on
		your version of gcc 2.95.x, may necessitate using -fno-strict-aliasing).
		computer.

		Make
		----
		@@ -322,9 +301,9 @@ Getting updated software
		Kernel compilation
		******************

		gcc 2.95.3
		----------
		o <ftp://ftp.gnu.org/gnu/gcc/gcc-2.95.3.tar.gz>
		gcc
		---
		o <ftp://ftp.gnu.org/gnu/gcc/>

		Make
		----

README

+2 −5

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		@@ -183,11 +183,8 @@ CONFIGURING the kernel:

		COMPILING the kernel:

		- Make sure you have gcc 2.95.3 available.
		gcc 2.91.66 (egcs-1.1.2), and gcc 2.7.2.3 are known to miscompile
		some parts of the kernel, and are no longer supported.
		Also remember to upgrade your binutils package (for as/ld/nm and company)
		if necessary. For more information, refer to Documentation/Changes.
		- Make sure you have at least gcc 3.2 available.
		For more information, refer to Documentation/Changes.

		Please note that you can still run a.out user programs with this kernel.

arch/arm/kernel/asm-offsets.c

+2 −7

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		@@ -23,20 +23,15 @@
		#error Sorry, your compiler targets APCS-26 but this kernel requires APCS-32
		#endif
		/*
		* GCC 2.95.1, 2.95.2: ignores register clobber list in asm().
		* GCC 3.0, 3.1: general bad code generation.
		* GCC 3.2.0: incorrect function argument offset calculation.
		* GCC 3.2.x: miscompiles NEW_AUX_ENT in fs/binfmt_elf.c
		* (http://gcc.gnu.org/PR8896) and incorrect structure
		* initialisation in fs/jffs2/erase.c
		*/
		#if __GNUC__ < 2 \|\| \
		(__GNUC__ == 2 && __GNUC_MINOR__ < 95) \|\| \
		(__GNUC__ == 2 && __GNUC_MINOR__ == 95 && __GNUC_PATCHLEVEL__ != 0 && \
		__GNUC_PATCHLEVEL__ < 3) \|\| \
		(__GNUC__ == 3 && __GNUC_MINOR__ < 3)
		#if (__GNUC__ == 3 && __GNUC_MINOR__ < 3)
		#error Your compiler is too buggy; it is known to miscompile kernels.
		#error Known good compilers: 2.95.3, 2.95.4, 2.96, 3.3
		#error Known good compilers: 3.3
		#endif

		/* Use marker if you need to separate the values later */

arch/arm26/kernel/asm-offsets.c

+0 −7

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		@@ -25,13 +25,6 @@
		#if defined(__APCS_32__) && defined(CONFIG_CPU_26)
		#error Sorry, your compiler targets APCS-32 but this kernel requires APCS-26
		#endif
		#if __GNUC__ < 2 \|\| (__GNUC__ == 2 && __GNUC_MINOR__ < 95)
		#error Sorry, your compiler is known to miscompile kernels. Only use gcc 2.95.3 and later.
		#endif
		#if __GNUC__ == 2 && __GNUC_MINOR__ == 95
		/* shame we can't detect the .1 or .2 releases */
		#warning GCC 2.95.2 and earlier miscompiles kernels.
		#endif

		/* Use marker if you need to separate the values later */

arch/i386/Kconfig

+0 −4

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		@@ -630,10 +630,6 @@ config REGPARM
		and passes the first three arguments of a function call in registers.
		This will probably break binary only modules.

		This feature is only enabled for gcc-3.0 and later - earlier compilers
		generate incorrect output with certain kernel constructs when
		-mregparm=3 is used.

		config SECCOMP
		bool "Enable seccomp to safely compute untrusted bytecode"
		depends on PROC_FS

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