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authorGravatar Thomas Petazzoni <thomas.petazzoni@free-electrons.com>2013-09-02 18:06:29 +0200
committerGravatar Peter Korsgaard <jacmet@sunsite.dk>2013-09-15 22:50:20 +0200
commit2babed4a50fcd050abc4686e05e24d0e374d10a8 (patch)
tree28e47f2aecb6ad0aa8274e18539faa8a19f08a4a /package/gcc/Config.in.host
parenta8164107ecc07933b244fd436ad1025d8ae1aff1 (diff)
downloadbuildroot-2babed4a50fcd050abc4686e05e24d0e374d10a8.tar.gz
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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/Config.in.host')
-rw-r--r--package/gcc/Config.in.host11
1 files changed, 11 insertions, 0 deletions
diff --git a/package/gcc/Config.in.host b/package/gcc/Config.in.host
index a6acaa25c6..7e6df2d9e6 100644
--- a/package/gcc/Config.in.host
+++ b/package/gcc/Config.in.host
@@ -3,6 +3,12 @@ comment "GCC Options"
config BR2_GCC_NEEDS_MPC
bool
+# Until gcc 4.7, a three stage build process was needed when using
+# NPTL. This hidden option tells whether gcc is a version that
+# requires this three stage build process.
+config BR2_GCC_VERSION_NEEDS_THREE_STAGE_BUILD
+ bool
+
choice
prompt "GCC compiler Version"
default BR2_GCC_VERSION_4_4_X if BR2_sparc_sparchfleon || BR2_sparc_sparchfleonv8 || BR2_sparc_sparcsfleon || BR2_sparc_sparcsfleonv8
@@ -16,11 +22,13 @@ choice
config BR2_GCC_VERSION_4_2_2_AVR32_2_1_5
depends on BR2_avr32
bool "gcc 4.2.2-avr32-2.1.5"
+ select BR2_GCC_VERSION_NEEDS_THREE_STAGE_BUILD
config BR2_GCC_VERSION_4_3_X
depends on !BR2_arc && !BR2_avr32 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8 && !BR2_cortex_a5 && !BR2_cortex_a7 && !BR2_cortex_a8 && !BR2_cortex_a9 && !BR2_cortex_a15 && !BR2_x86_atom && !BR2_powerpc_e300c2 && !BR2_powerpc_e300c3 && !BR2_powerpc_e500mc && !BR2_powerpc_464 && !BR2_powerpc_464fp && !BR2_powerpc_476 && !BR2_powerpc_476fp && !BR2_fa526 && !BR2_pj4
depends on !BR2_ARM_EABIHF
bool "gcc 4.3.x"
+ select BR2_GCC_VERSION_NEEDS_THREE_STAGE_BUILD
config BR2_GCC_VERSION_4_4_X
depends on !BR2_arc && !BR2_avr32 && !BR2_cortex_a5 && !BR2_cortex_a7 && !BR2_cortex_a15 && !BR2_x86_atom && !BR2_powerpc_476 && !BR2_powerpc_476fp && !BR2_fa526 && !BR2_pj4
@@ -29,6 +37,7 @@ choice
depends on !BR2_ARM_EABIHF
# VFPv4 support appeared in gcc 4.5
depends on !BR2_ARM_FPU_VFPV4 && !BR2_ARM_FPU_VFPV4D16
+ select BR2_GCC_VERSION_NEEDS_THREE_STAGE_BUILD
config BR2_GCC_VERSION_4_5_X
depends on !BR2_arc && !BR2_avr32 && !BR2_cortex_a7 && !BR2_cortex_a15 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8 && !BR2_fa526 && !BR2_pj4
@@ -36,11 +45,13 @@ choice
# ARM EABIhf support appeared in gcc 4.6
depends on !BR2_ARM_EABIHF
bool "gcc 4.5.x"
+ select BR2_GCC_VERSION_NEEDS_THREE_STAGE_BUILD
config BR2_GCC_VERSION_4_6_X
depends on !BR2_arc && !BR2_avr32 && !BR2_bfin && !BR2_cortex_a7 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8 && !BR2_pj4
select BR2_GCC_NEEDS_MPC
bool "gcc 4.6.x"
+ select BR2_GCC_VERSION_NEEDS_THREE_STAGE_BUILD
config BR2_GCC_VERSION_4_7_X
depends on !BR2_arc && !BR2_avr32 && !BR2_bfin && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8 && !BR2_pj4