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Update help message printed by the Makefile 

The message printed by 'make help' is incomplete. It doesn't
mention all relevant supported targets. This patch updates it.

The format of the first line of the help message has been changed
so that it no longer lists all supported targets. This eases the
maintenance as we don't need to update the list in 2 places
anymore whenever a new target is added.

Also add a reference to the user guide to get the list of
supported options.

Change-Id: I79d8b815b0ffc0c43b4c05124378fce0e938365c
This commit is contained in:
Sandrine Bailleux 2015-02-18 16:18:00 +00:00
parent 5930eadbe5
commit 1b57859651
1 changed files with 11 additions and 4 deletions
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15
Makefile
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@ -625,16 +625,23 @@ cscope:
${Q}cscope -b -q -k
help:
@echo "usage: ${MAKE} PLAT=<${HELP_PLATFORMS}> <all|bl1|bl2|bl31|distclean|clean|checkcodebase|checkpatch>"
@echo "usage: ${MAKE} PLAT=<${HELP_PLATFORMS}> [OPTIONS] [TARGET]"
@echo ""
@echo "PLAT is used to specify which platform you wish to build."
@echo "If no platform is specified, PLAT defaults to: ${DEFAULT_PLAT}"
@echo ""
@echo "Please refer to the User Guide for a list of all supported options."
@echo "Note that the build system doesn't track dependencies for build "
@echo "options. Therefore, if any of the build options are changed "
@echo "from a previous build, a clean build must be performed."
@echo ""
@echo "Supported Targets:"
@echo " all Build the BL1, BL2 and BL31 binaries"
@echo " all Build all individual bootloader binaries"
@echo " bl1 Build the BL1 binary"
@echo " bl2 Build the BL2 binary"
@echo " bl31 Build the BL31 binary"
@echo " bl31 Build the BL3-1 binary"
@echo " bl32 Build the BL3-2 binary"
@echo " fip Build the Firmware Image Package (FIP)"
@echo " checkcodebase Check the coding style of the entire source tree"
@echo " checkpatch Check the coding style on changes in the current"
@echo " branch against BASE_COMMIT (default origin/master)"
@ -644,7 +651,7 @@ help:
@echo " certtool Build the Certificate generation tool"
@echo " fiptool Build the Firmware Image Package(FIP) creation tool"
@echo ""
@echo "note: most build targets require PLAT to be set to a specific platform."
@echo "Note: most build targets require PLAT to be set to a specific platform."
@echo ""
@echo "example: build all targets for the FVP platform:"
@echo " CROSS_COMPILE=aarch64-none-elf- make PLAT=fvp all"