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authorJon Loeliger <jdl@freescale.com>2006-09-19 08:51:24 -0500
committerJon Loeliger <jdl@freescale.com>2006-09-19 08:51:24 -0500
commitafa98843e4665add11b69496341053b268156e3a (patch)
tree116878b6b94920a5f282d0a16e4b9ad9dfaf57ff /README
parentb440d0ef72e6278973d3220c10136a4c0624c286 (diff)
parentaeec782b020930732eab075af97212c3f03afcae (diff)
Merge branch 'master' of http://www.denx.de/git/u-boot
Conflicts: board/stxxtc/Makefile
Diffstat (limited to 'README')
-rw-r--r--README55
1 files changed, 49 insertions, 6 deletions
diff --git a/README b/README
index 621f3f3bd3f..32a5d686921 100644
--- a/README
+++ b/README
@@ -2328,6 +2328,26 @@ images ready for download to / installation on your system:
- "u-boot" is an image in ELF binary format
- "u-boot.srec" is in Motorola S-Record format
+By default the build is performed locally and the objects are saved
+in the source directory. One of the two methods can be used to change
+this behavior and build U-Boot to some external directory:
+
+1. Add O= to the make command line invocations:
+
+ make O=/tmp/build distclean
+ make O=/tmp/build NAME_config
+ make O=/tmp/build all
+
+2. Set environment variable BUILD_DIR to point to the desired location:
+
+ export BUILD_DIR=/tmp/build
+ make distclean
+ make NAME_config
+ make all
+
+Note that the command line "O=" setting overrides the BUILD_DIR environment
+variable.
+
Please be aware that the Makefiles assume you are using GNU make, so
for instance on NetBSD you might need to use "gmake" instead of
@@ -2381,6 +2401,22 @@ or to build on a native PowerPC system you can type
CROSS_COMPILE=' ' MAKEALL
+When using the MAKEALL script, the default behaviour is to build U-Boot
+in the source directory. This location can be changed by setting the
+BUILD_DIR environment variable. Also, for each target built, the MAKEALL
+script saves two log files (<target>.ERR and <target>.MAKEALL) in the
+<source dir>/LOG directory. This default location can be changed by
+setting the MAKEALL_LOGDIR environment variable. For example:
+
+ export BUILD_DIR=/tmp/build
+ export MAKEALL_LOGDIR=/tmp/log
+ CROSS_COMPILE=ppc_8xx- MAKEALL
+
+With the above settings build objects are saved in the /tmp/build, log
+files are saved in the /tmp/log and the source tree remains clean during
+the whole build process.
+
+
See also "U-Boot Porting Guide" below.
@@ -3523,12 +3559,19 @@ Coding Standards:
-----------------
All contributions to U-Boot should conform to the Linux kernel
-coding style; see the file "Documentation/CodingStyle" in your Linux
-kernel source directory.
-
-Please note that U-Boot is implemented in C (and to some small parts
-in Assembler); no C++ is used, so please do not use C++ style
-comments (//) in your code.
+coding style; see the file "Documentation/CodingStyle" and the script
+"scripts/Lindent" in your Linux kernel source directory. In sources
+originating from U-Boot a style corresponding to "Lindent -pcs" (adding
+spaces before parameters to function calls) is actually used.
+
+Source files originating from a different project (for example the
+MTD subsystem) are generally exempt from these guidelines and are not
+reformated to ease subsequent migration to newer versions of those
+sources.
+
+Please note that U-Boot is implemented in C (and to some small parts in
+Assembler); no C++ is used, so please do not use C++ style comments (//)
+in your code.
Please also stick to the following formatting rules:
- remove any trailing white space