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| author | Thomas Petazzoni <thomas.petazzoni@free-electrons.com> | 2013-09-02 18:06:29 +0200 |
|---|---|---|
| committer | Peter Korsgaard <jacmet@sunsite.dk> | 2013-09-15 22:50:20 +0200 |
| commit | 2babed4a50fcd050abc4686e05e24d0e374d10a8 (patch) | |
| tree | 28e47f2aecb6ad0aa8274e18539faa8a19f08a4a /package/gcc/gcc-initial/gcc-initial.mk | |
| parent | a8164107ecc07933b244fd436ad1025d8ae1aff1 (diff) | |
| download | buildroot-2babed4a50fcd050abc4686e05e24d0e374d10a8.tar.gz buildroot-2babed4a50fcd050abc4686e05e24d0e374d10a8.zip | |
toolchain-internal: skip gcc-intermediate when possible
When NPTL support was introduced, gcc required a three stages build
process. Since gcc 4.7, this is no longer necessary, and it is
possible to get back to a two stages build process. This patch takes
advantage of this, by doing a two stages build process when possible.
We introduce a few hidden kconfig options:
* BR2_GCC_VERSION_NEEDS_THREE_STAGE_BUILD, which is set by the gcc
Config.in logic to indicate that the compiler might need a three
stages build. Currently, all versions prior to 4.7.x are selecting
this kconfig option.
* BR2_TOOLCHAIN_LIBC_NEEDS_THREE_STAGE_BUILD, which indicates whether
the C library might need a three stages build. This is the case for
eglibc, and uClibc when NPTL is enabled.
* BR2_TOOLCHAIN_NEEDS_THREE_STAGE_BUILD finally is enabled when both
of the previous options are enabled. It indicates that a three
stages build is actually needed.
In addition to those options, the uClibc/gcc build logic is changed to
use only a two stages build process when possible.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Diffstat (limited to 'package/gcc/gcc-initial/gcc-initial.mk')
| -rw-r--r-- | package/gcc/gcc-initial/gcc-initial.mk | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/package/gcc/gcc-initial/gcc-initial.mk b/package/gcc/gcc-initial/gcc-initial.mk index 0eb492fa4d..83767ea509 100644 --- a/package/gcc/gcc-initial/gcc-initial.mk +++ b/package/gcc/gcc-initial/gcc-initial.mk @@ -29,6 +29,7 @@ HOST_GCC_INITIAL_CONF_OPT = \ --enable-languages=c \ --disable-shared \ --without-headers \ + --disable-threads \ --with-newlib \ --disable-largefile \ --disable-nls \ @@ -40,4 +41,11 @@ HOST_GCC_INITIAL_CONF_ENV = \ HOST_GCC_INITIAL_MAKE_OPT = all-gcc HOST_GCC_INITIAL_INSTALL_OPT = install-gcc +ifeq ($(BR2_TOOLCHAIN_NEEDS_THREE_STAGE_BUILD),) +ifeq ($(BR2_GCC_SUPPORTS_FINEGRAINEDMTUNE),y) +HOST_GCC_INITIAL_MAKE_OPT += all-target-libgcc +HOST_GCC_INITIAL_INSTALL_OPT += install-target-libgcc +endif +endif + $(eval $(host-autotools-package)) |
