Kernel Build - Revision history

Ralf at 15:26, 13 August 2010

2010-08-13T15:26:39Z

Ralf: Move and rename sections.

2010-08-13T14:58:38Z

Move and rename sections.

Ralf: Incorporate the kernel specifics from the GCC page

2010-08-13T14:55:49Z

Incorporate the kernel specifics from the GCC page

Ralf: /* Build Requirements */

2010-05-29T17:43:53Z

‎Build Requirements

Ralf: /* Build Requirements */

2010-05-27T10:52:09Z

‎Build Requirements

Ralf at 13:15, 25 May 2010

2010-05-25T13:15:07Z

Ralf: Document build requirements.

2010-05-25T13:11:57Z

Document build requirements.

Headless at 16:19, 24 October 2005

2005-10-24T16:19:27Z

Ralf at 14:32, 2 August 2005

2005-08-02T14:32:32Z

Alec v at 17:13, 12 June 2005

2005-06-12T17:13:39Z

@@ Line 1: / Line 1: @@
-First get Linux/MIPS kernel sources, for example from [[Net_Resources#Anonymous_CVS|CVS]].  In the next step we need to configure the kernel sources by running <tt>make config</tt>, <tt>make menuconfig</tt>, <tt>make xconfig</tt>
+First get Linux/MIPS kernel sources, for example from the [[git]] archive.  In the next step we need to configure the kernel sources by running <tt>make config</tt>, <tt>make menuconfig</tt>, <tt>make xconfig</tt>
 == Build Requirements ==
 === Linux 2.4 ===
-The recommended compiler for [[Kernel_Build|building]] Linux&nbsp;2.4 is gcc&nbsp;2.95 however the large majority of developers is probably user a more modern GCC.  New compilers up to gcc&nbsp;3.3 have been used successfully to build the kernel and only the latest 2.4 kernels have fixed the issues with gcc&nbsp;3.4. GCC 4.x can not be used and with Linux&nbsp;2.4 being in deep freeze mode we generally don't intend to fix such problems but rather recommend to use an older compiler for the kernel.
+The recommended compiler for building Linux&nbsp;2.4 is gcc&nbsp;2.95 however the large majority of developers is probably user a more modern GCC.  New compilers up to gcc&nbsp;3.3 have been used successfully to build the kernel and only the latest 2.4 kernels have fixed the issues with gcc&nbsp;3.4. GCC 4.x can not be used and with Linux&nbsp;2.4 being in deep freeze mode we generally don't intend to fix such problems but rather recommend to use an older compiler for the kernel.
 The latest official [http://gcc.gnu.org/ GCC 2] is version 2.95.3<ref>http://gcc.gnu.org/gcc-2.95/ GCC 2.95 release notes</ref>. GCC&nbsp;2.96<ref>http://gcc.gnu.org/gcc-2.96.html GCC steering committee on GCC 2.96</ref> is an unofficial, massively patched version. It provides more efficient optimization with -O2, more strict syntax checking and supports more recent C++ standards. Unfortunately the C++ ABI is not fully compatible<ref>http://www.redhat.com/advice/speaks_gcc.html Red Hat Speaks on gcc 2.96-RH</ref> with the official 2.95.3 nor 3.0.  This is not a concern for building the kernel or modules as those are written in plain C but is a consideration if using a single toolchain for an entire distribution or product.
 === Linux 2.6 ===
-The following is about building vanilla linux-mips.org kernels using unmodified GNU toolchains.  Further requirements are documented in <tt>Documentation/Changes</tt>.  Below are additional MIPS-specific requirements.  If you're trying to build a vendor kernel, please consider using the vendor supplied or recommended toolchain.
+==== Platform specific constraints ====
-* The Lemote 2F defconfig build requires binutils 2.20.2 or binutils 2.21 which at the time of this writing are both still unreleased.  It is not clear when they will be released.  Alternatively a CVS version can be used; for details see the binutils web pages<ref>http://www.gnu.org/software/binutils/</ref>.
+* [[IP32|O2]] with an [[R10000]] or [[R12000]] and [[IP22|Indigo²]] with [[R10000]] processors need GCC 4.4 or a patched older version.
 * GCC 3.2 is a lost cause for building 64-bit kernels
 * GCC 3.3 is broken for 64-bit kernels but can just about be kludged to build a 64-bit kernel.
 * GCC 3.2 used to work for the rest but it's a very long time since I tested this for a modern kernel.
-* Linux 2.6.29 and older need a GCC older than 4.4.0 to compile.  This dependency is being fixed on 2010-05-29 while writing this so you may have to update your kernel to get rid of this dependency.
 * Linux 2.6.16 and older need a GCC older than 4.3.0 to compile.
 == Common problems ==

@@ Line 1: / Line 1: @@
 First get Linux/MIPS kernel sources, for example from [[Net_Resources#Anonymous_CVS|CVS]].  In the next step we need to configure the kernel sources by running <tt>make config</tt>, <tt>make menuconfig</tt>, <tt>make xconfig</tt>
 === Linux 2.4 ===
 The recommended compiler for [[Kernel_Build|building]] Linux&nbsp;2.4 is gcc&nbsp;2.95 however the large majority of developers is probably user a more modern GCC.  New compilers up to gcc&nbsp;3.3 have been used successfully to build the kernel and only the latest 2.4 kernels have fixed the issues with gcc&nbsp;3.4. GCC 4.x can not be used and with Linux&nbsp;2.4 being in deep freeze mode we generally don't intend to fix such problems but rather recommend to use an older compiler for the kernel.
@@ Line 6: / Line 7: @@
 The latest official [http://gcc.gnu.org/ GCC 2] is version 2.95.3<ref>http://gcc.gnu.org/gcc-2.95/ GCC 2.95 release notes</ref>. GCC&nbsp;2.96<ref>http://gcc.gnu.org/gcc-2.96.html GCC steering committee on GCC 2.96</ref> is an unofficial, massively patched version. It provides more efficient optimization with -O2, more strict syntax checking and supports more recent C++ standards. Unfortunately the C++ ABI is not fully compatible<ref>http://www.redhat.com/advice/speaks_gcc.html Red Hat Speaks on gcc 2.96-RH</ref> with the official 2.95.3 nor 3.0.  This is not a concern for building the kernel or modules as those are written in plain C but is a consideration if using a single toolchain for an entire distribution or product.
-=== Build Requirements ===
+=== Linux 2.6 ===
 The following is about building vanilla linux-mips.org kernels using unmodified GNU toolchains.  Further requirements are documented in <tt>Documentation/Changes</tt>.  Below are additional MIPS-specific requirements.  If you're trying to build a vendor kernel, please consider using the vendor supplied or recommended toolchain.
 * The Lemote 2F defconfig build requires binutils 2.20.2 or binutils 2.21 which at the time of this writing are both still unreleased.  It is not clear when they will be released.  Alternatively a CVS version can be used; for details see the binutils web pages<ref>http://www.gnu.org/software/binutils/</ref>.
@@ Line 15: / Line 16: @@
 * Linux 2.6.29 and older need a GCC older than 4.4.0 to compile.  This dependency is being fixed on 2010-05-29 while writing this so you may have to update your kernel to get rid of this dependency.
 * Linux 2.6.16 and older need a GCC older than 4.3.0 to compile.
 == Common problems ==
@@ Line 64: / Line 62: @@
 === Linux 2.6 build fails with <tt>"ld: final link failed: Bad value"</tt> ===
 This is caused by a linker bug that exists in at least binutils&nbsp;2.15.  If you hit it you should upgrade to binutils&nbsp;2.16.

@@ Line 1: / Line 1: @@
 First get Linux/MIPS kernel sources, for example from [[Net_Resources#Anonymous_CVS|CVS]].  In the next step we need to configure the kernel sources by running <tt>make config</tt>, <tt>make menuconfig</tt>, <tt>make xconfig</tt>
-== Build Requirements ==
+=== Linux 2.4 ===
-The following is about building vanilla linux-mips.org kernels using unmodified GNU toolchains.  Further requirements are documented in <tt>Documentation/Changes</tt>.  Below are additional MIPS-specific requirements.  If you're trying to build a vendor kernel, please use the vender supplied or recommended toolchain.
+The recommended compiler for [[Kernel_Build|building]] Linux&nbsp;2.4 is gcc&nbsp;2.95 however the large majority of developers is probably user a more modern GCC.  New compilers up to gcc&nbsp;3.3 have been used successfully to build the kernel and only the latest 2.4 kernels have fixed the issues with gcc&nbsp;3.4. GCC 4.x can not be used and with Linux&nbsp;2.4 being in deep freeze mode we generally don't intend to fix such problems but rather recommend to use an older compiler for the kernel.
-* The Lemote 2F defconfig build requires binutils 2.20.2 which at the time of this writing is still unreleased.
 * GCC 3.2 is a lost cause for building 64-bit kernels
-* GCC 3.3 is broken but can just about be kludged to build a 64-bit kernel.
+* GCC 3.3 is broken for 64-bit kernels but can just about be kludged to build a 64-bit kernel.
 * GCC 4.4 or a patched older version is required to build a kernel O2 or Indigo² with R10000 processors.
 * GCC 3.2 used to work for the rest but it's a very long time since I tested this for a modern kernel.
 * Linux 2.6.29 and older need a GCC older than 4.4.0 to compile.  This dependency is being fixed on 2010-05-29 while writing this so you may have to update your kernel to get rid of this dependency.
 * Linux 2.6.16 and older need a GCC older than 4.3.0 to compile.
 == Common problems ==

@@ Line 8: / Line 8: @@
 * GCC 4.4 or a patched older version is required to build a kernel O2 or Indigo² with R10000 processors.
 * GCC 3.2 used to work for the rest but it's a very long time since I tested this for a modern kernel.
-* Linux 2.6.29 and older need a GCC older than 4.4.0 to compile.
+* Linux 2.6.29 and older need a GCC older than 4.4.0 to compile.  This dependency is being fixed on 2010-05-29 while writing this so you may have to update your kernel to get rid of this dependency.
 == Common problems ==

@@ Line 3: / Line 3: @@
 == Build Requirements ==
 The following is about building vanilla linux-mips.org kernels using unmodified GNU toolchains.  Further requirements are documented in <tt>Documentation/Changes</tt>.  Below are additional MIPS-specific requirements.  If you're trying to build a vendor kernel, please use the vender supplied or recommended toolchain.
-* The Lemote 2F defconfig requires binutils 2.20 to build.
+* The Lemote 2F defconfig build requires binutils 2.20.2 which at the time of this writing is still unreleased.
 * GCC 3.2 is a lost cause for building 64-bit kernels
 * GCC 3.3 is broken but can just about be kludged to build a 64-bit kernel.

← Older revision		Revision as of 13:11, 25 May 2010
Line 1:		Line 1:
	First get Linux/MIPS kernel sources, for example from [[Net_Resources#Anonymous_CVS\|CVS]]. In the next step we need to configure the kernel sources by running <tt>make config</tt>, <tt>make menuconfig</tt>, <tt>make xconfig</tt>		First get Linux/MIPS kernel sources, for example from [[Net_Resources#Anonymous_CVS\|CVS]]. In the next step we need to configure the kernel sources by running <tt>make config</tt>, <tt>make menuconfig</tt>, <tt>make xconfig</tt>
		+
		+	== Build Requirements ==
		+	The following is about building vanilla linux-mips.org kernels using unmodified GNU toolchains. If you're trying to build a vendor kernel, please use the vender supplied or recommended toolchain.
		+	* The Lemote 2F defconfig requires binutils 2.20 to build.
		+	* GCC 3.2 is a lost cause for building 64-bit kernels
		+	* GCC 3.3 is broken but can just about be kludged to build a 64-bit kernel.
		+	* GCC 4.4 or a patched older version is required to build a kernel O2 or Indigo² with R10000 processors.
		+	* GCC 3.2 used to work for the rest but it's a very long time since I tested this for a modern kernel.
		+	* Linux 2.6.29 and older need a GCC older than 4.4.0 to compile.

	== Common problems ==		== Common problems ==

@@ Line 17: / Line 17: @@
 _MIPS_SZLONG etc. are normally defined by the gcc compiler driver.  That is they should never be defined by the application itself. The precense of such kludgery usually indicates the use of a [[Toolchains|toolchain]] that wasn't configured for a Linux/MIPS target.
-=== Ld dies with signal 6 ===
+=== <tt>ld</tt> dies with signal 6 ===
 <pre>
@@ Line 44: / Line 44: @@
 * A few early Linux&nbsp;2.6 kernels had a bug which would always result in this error message.  In this case you really should upgrade.
-=== Linux 2.6 built fails with "ld: final link failed: Bad value" ===
+=== Linux 2.6 build fails with <tt>"ld: final link failed: Bad value"</tt> ===
-This is caused by a linker bug that exists in at least binutils&nbps;2.15.  If you hit it you should upgrade to binutils&nbsp;2.16.
+This is caused by a linker bug that exists in at least binutils&nbsp;2.15.  If you hit it you should upgrade to binutils&nbsp;2.16.

← Older revision		Revision as of 14:32, 2 August 2005
Line 43:		Line 43:
	* Make sure you have set CONFIG_CROSSCOMPILE or add <code>CROSS_COMPILE=<[[Endianess#GNU_Configuration_Names\|target]]></code> to the make invocation.		* Make sure you have set CONFIG_CROSSCOMPILE or add <code>CROSS_COMPILE=<[[Endianess#GNU_Configuration_Names\|target]]></code> to the make invocation.
	* A few early Linux 2.6 kernels had a bug which would always result in this error message. In this case you really should upgrade.		* A few early Linux 2.6 kernels had a bug which would always result in this error message. In this case you really should upgrade.
		+
		+	=== Linux 2.6 built fails with "ld: final link failed: Bad value" ===
		+	This is caused by a linker bug that exists in at least binutils&nbps;2.15. If you hit it you should upgrade to binutils 2.16.