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@@ -2323,6 +2323,26 @@ images ready for download to / installation on your system:
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- "u-boot" is an image in ELF binary format
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- "u-boot.srec" is in Motorola S-Record format
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+By default the build is performed locally and the objects are saved
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+in the source directory. One of the two methods can be used to change
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+this behavior and build U-Boot to some external directory:
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+
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+1. Add O= to the make command line invocations:
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+
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+ make O=/tmp/build distclean
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+ make O=/tmp/build NAME_config
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+ make O=/tmp/build all
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+
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+2. Set environment variable BUILD_DIR to point to the desired location:
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+
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+ export BUILD_DIR=/tmp/build
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+ make distclean
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+ make NAME_config
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+ make all
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+
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+Note that the command line "O=" setting overrides the BUILD_DIR environment
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+variable.
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+
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Please be aware that the Makefiles assume you are using GNU make, so
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for instance on NetBSD you might need to use "gmake" instead of
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@@ -2376,6 +2396,22 @@ or to build on a native PowerPC system you can type
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CROSS_COMPILE=' ' MAKEALL
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+When using the MAKEALL script, the default behaviour is to build U-Boot
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+in the source directory. This location can be changed by setting the
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+BUILD_DIR environment variable. Also, for each target built, the MAKEALL
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+script saves two log files (<target>.ERR and <target>.MAKEALL) in the
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+<source dir>/LOG directory. This default location can be changed by
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+setting the MAKEALL_LOGDIR environment variable. For example:
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+
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+ export BUILD_DIR=/tmp/build
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+ export MAKEALL_LOGDIR=/tmp/log
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+ CROSS_COMPILE=ppc_8xx- MAKEALL
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+
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+With the above settings build objects are saved in the /tmp/build, log
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+files are saved in the /tmp/log and the source tree remains clean during
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+the whole build process.
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+
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+
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See also "U-Boot Porting Guide" below.
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Marian Balakowicz