diff options
Diffstat (limited to 'Documentation/kbuild')
| -rw-r--r-- | Documentation/kbuild/kbuild.txt | 16 | ||||
| -rw-r--r-- | Documentation/kbuild/makefiles.txt | 20 |
2 files changed, 33 insertions, 3 deletions
diff --git a/Documentation/kbuild/kbuild.txt b/Documentation/kbuild/kbuild.txt index f3355b6812d..bb3bf38f03d 100644 --- a/Documentation/kbuild/kbuild.txt +++ b/Documentation/kbuild/kbuild.txt @@ -65,6 +65,22 @@ INSTALL_PATH INSTALL_PATH specifies where to place the updated kernel and system map images. Default is /boot, but you can set it to other values. +INSTALLKERNEL +-------------------------------------------------- +Install script called when using "make install". +The default name is "installkernel". + +The script will be called with the following arguments: + $1 - kernel version + $2 - kernel image file + $3 - kernel map file + $4 - default install path (use root directory if blank) + +The implmentation of "make install" is architecture specific +and it may differ from the above. + +INSTALLKERNEL is provided to enable the possibility to +specify a custom installer when cross compiling a kernel. MODLIB -------------------------------------------------- diff --git a/Documentation/kbuild/makefiles.txt b/Documentation/kbuild/makefiles.txt index d76cfd8712e..71c602d6168 100644 --- a/Documentation/kbuild/makefiles.txt +++ b/Documentation/kbuild/makefiles.txt @@ -18,6 +18,7 @@ This document describes the Linux kernel Makefiles. --- 3.9 Dependency tracking --- 3.10 Special Rules --- 3.11 $(CC) support functions + --- 3.12 $(LD) support functions === 4 Host Program support --- 4.1 Simple Host Program @@ -435,14 +436,14 @@ more details, with real examples. The second argument is optional, and if supplied will be used if first argument is not supported. - ld-option - ld-option is used to check if $(CC) when used to link object files + cc-ldoption + cc-ldoption is used to check if $(CC) when used to link object files supports the given option. An optional second option may be specified if first option are not supported. Example: #arch/i386/kernel/Makefile - vsyscall-flags += $(call ld-option, -Wl$(comma)--hash-style=sysv) + vsyscall-flags += $(call cc-ldoption, -Wl$(comma)--hash-style=sysv) In the above example, vsyscall-flags will be assigned the option -Wl$(comma)--hash-style=sysv if it is supported by $(CC). @@ -570,6 +571,19 @@ more details, with real examples. endif endif +--- 3.12 $(LD) support functions + + ld-option + ld-option is used to check if $(LD) supports the supplied option. + ld-option takes two options as arguments. + The second argument is an optional option that can be used if the + first option is not supported by $(LD). + + Example: + #Makefile + LDFLAGS_vmlinux += $(call really-ld-option, -X) + + === 4 Host Program support Kbuild supports building executables on the host for use during the |