Commit Graph

6 Commits

Author SHA1 Message Date
Thomas Petazzoni
62a84ded2f grub: improve help text with detailed instructions to install grub
These instructions should probaby go in the Buildroot manual, but at
this point, it's not clear in which section they should go. So in
order to not loose those notes, add them to the Grub help text.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2013-12-01 23:45:07 +01:00
Thomas Petazzoni
1cece2813b grub: add option to configure the list of supported filesystems
Grub can be configured to enable or disable the filesystems supported
in the stage 2. In addition, there are filesystem specific stage
1.5. In order to save space and build time, we provide a new option
that allows to give a space-separated list of filesystems that Grub
should support.

We default to support FAT and ext2, since most of the other
filesystems are fairly unlikely to be used.

We use this option to:

 1) Pass --enable-<fs> or --disable-<fs>, which enables/disables the
    support of <fs> in Grub stage 2.

 2) Install only the stage 1.5 that correspond to the selected
    filesystems.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2013-12-01 23:44:13 +01:00
Thomas Petazzoni
da60753a43 grub: support build on x86-64, and misc other improvements
This commit brings a number of improvements to the grub packaging:

 * It builds grub with the host compiler, which is needed so that we
   can build a 32 bits grub even if the target architecture is
   x86-64. To make sure we have a host compiler capable of generating
   32 bits code, grub now selects the BR2_HOSTARCH_NEEDS_IA32_COMPILER
   option. Building with the host compiler is done by cheating and
   passing $(HOST_CONFIGURE_OPTS) in GRUB_CONF_ENV.

 * Some additional CFLAGS are added to make sure grub builds properly
   with modern compilers (-O0, --build-id=none, -fno-stack-protector).

 * Removal of the GRUB_INSTALL_STAGING_CMDS which were not used, since
   GRUB_INSTALL_STAGING was not set to YES.

 * Installation of the "grub" binary in $(HOST_DIR) instead of
   $(TARGET_DIR) since it's actually used only on the host to install
   grub into an image or device.

 * Removal of the grub uninstall commands, since they are generally
   considered useless.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2013-12-01 23:35:28 +01:00
Thomas Petazzoni
76422721f7 grub: factorize BR2_TARGET_GRUB dependency in Config.in
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2013-12-01 23:33:24 +01:00
Peter Korsgaard
ec9ec06b56 boot: get rid of toplevel submenus
Sub options are indented anyway, so no need for empty menus / force people
to enter sub menus to see configuration options.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2011-09-18 22:09:42 +02:00
Thomas Petazzoni
649b5b9250 bootloaders: move bootloader build code to boot/
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2010-06-10 21:05:12 +02:00