920fb964d6
The gcc default, bss-plt, will cause errors when using the prelinker. All other distributions that I am aware of are using the the secure-plt. For an explanation of the differences, the gcc docs: Current PowerPC GCC accepts a `-msecure-plt' option that generates code capable of using a newer PLT and GOT layout that has the security advantage of no executable section ever needing to be writable and no writable section ever being executable. PowerPC ld will generate this layout, including stubs to access the PLT, if all input files (including startup and static libraries) were compiled with `-msecure-plt'. `--bss-plt' forces the old BSS PLT (and GOT layout) which can give slightly better performance. The security of the new PLT and ability to run the prelinker outweigh any performance penalty. The secure-plt is enabled by default. The old bss-plt can be enabled by selecting 'bssplt' in the DISTRO_FEATURES. (From OE-Core rev: 70c55aada1101a5c687cdaa79f370fa4530b39d9) Signed-off-by: Mark Hatle <mark.hatle@windriver.com> Signed-off-by: Ross Burton <ross.burton@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
106 lines
4 KiB
PHP
106 lines
4 KiB
PHP
SUMMARY = "GNU cc and gcc C compilers"
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HOMEPAGE = "http://www.gnu.org/software/gcc/"
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SECTION = "devel"
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LICENSE = "GPL"
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NATIVEDEPS = ""
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inherit autotools gettext texinfo
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BPN = "gcc"
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def get_gcc_float_setting(bb, d):
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if d.getVar('ARMPKGSFX_EABI', True) == "hf" and d.getVar('TRANSLATED_TARGET_ARCH', True) == "arm":
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return "--with-float=hard"
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if d.getVar('TARGET_FPU', True) in [ 'soft' ]:
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return "--with-float=soft"
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if d.getVar('TARGET_FPU', True) in [ 'ppc-efd' ]:
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return "--enable-e500_double"
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return ""
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get_gcc_float_setting[vardepvalue] = "${@get_gcc_float_setting(bb, d)}"
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def get_gcc_mips_plt_setting(bb, d):
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if d.getVar('TRANSLATED_TARGET_ARCH', True) in [ 'mips', 'mipsel' ] and bb.utils.contains('DISTRO_FEATURES', 'mplt', True, False, d):
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return "--with-mips-plt"
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return ""
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def get_gcc_ppc_plt_settings(bb, d):
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if d.getVar('TRANSLATED_TARGET_ARCH', True) in [ 'powerpc' ] and not bb.utils.contains('DISTRO_FEATURES', 'bssplt', True, False, d):
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return "--enable-secureplt"
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return ""
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def get_long_double_setting(bb, d):
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if d.getVar('TRANSLATED_TARGET_ARCH', True) in [ 'powerpc', 'powerpc64' ] and d.getVar('TCLIBC', True) in [ 'uclibc', 'glibc' ]:
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return "--with-long-double-128"
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return ""
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def get_gcc_multiarch_setting(bb, d):
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target_arch = d.getVar('TRANSLATED_TARGET_ARCH', True)
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multiarch_options = {
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"i586": "--enable-targets=all",
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"i686": "--enable-targets=all",
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"powerpc": "--enable-targets=powerpc64",
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"mips": "--enable-targets=all",
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"sparc": "--enable-targets=all",
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}
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if bb.utils.contains('DISTRO_FEATURES', 'multiarch', True, False, d):
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if target_arch in multiarch_options :
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return multiarch_options[target_arch]
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return ""
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# this is used by the multilib setup of gcc
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def get_tune_parameters(tune, d):
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availtunes = d.getVar('AVAILTUNES', True)
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if tune not in availtunes.split():
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bb.error('The tune: %s is not one of the available tunes: %s', tune or None, availtunes)
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localdata = bb.data.createCopy(d)
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override = ':tune-' + tune
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localdata.setVar('OVERRIDES', localdata.getVar('OVERRIDES', False) + override)
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bb.data.update_data(localdata)
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retdict = {}
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retdict['tune'] = tune
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retdict['ccargs'] = localdata.getVar('TUNE_CCARGS', True)
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retdict['features'] = localdata.getVar('TUNE_FEATURES', True)
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# BASELIB is used by the multilib code to change library paths
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retdict['baselib'] = localdata.getVar('BASE_LIB', True) or localdata.getVar('BASELIB', True)
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retdict['arch'] = localdata.getVar('TUNE_ARCH', True)
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retdict['abiextension'] = localdata.getVar('ABIEXTENSION', True)
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retdict['target_fpu'] = localdata.getVar('TARGET_FPU', True)
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retdict['pkgarch'] = localdata.getVar('TUNE_PKGARCH', True)
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retdict['package_extra_archs'] = localdata.getVar('PACKAGE_EXTRA_ARCHS', True)
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return retdict
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get_tune_parameters[vardepsexclude] = "AVAILTUNES TUNE_CCARGS OVERRIDES TUNE_FEATURES BASE_LIB BASELIB TUNE_ARCH ABIEXTENSION TARGET_FPU TUNE_PKGARCH PACKAGE_EXTRA_ARCHS"
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DEBIANNAME_${MLPREFIX}libgcc = "libgcc1"
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MIRRORS =+ "\
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${GNU_MIRROR}/gcc ftp://gcc.gnu.org/pub/gcc/releases/ \n \
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${GNU_MIRROR}/gcc ftp://gd.tuwien.ac.at/gnu/gcc/ \n \
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${GNU_MIRROR}/gcc http://mirrors.rcn.net/pub/sourceware/gcc/releases/ \n \
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${GNU_MIRROR}/gcc http://gcc.get-software.com/releases/ \n \
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${GNU_MIRROR}/gcc http://gcc.get-software.com/releases/ \n \
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"
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#
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# Set some default values
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#
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gcclibdir = "${libdir}/gcc"
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BINV = "${PV}"
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#S = "${WORKDIR}/gcc-${PV}"
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S = "${TMPDIR}/work-shared/gcc-${PV}-${PR}/gcc-${PV}"
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B = "${WORKDIR}/gcc-${PV}/build.${HOST_SYS}.${TARGET_SYS}"
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target_includedir ?= "${includedir}"
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target_libdir ?= "${libdir}"
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target_base_libdir ?= "${base_libdir}"
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target_prefix ?= "${prefix}"
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# We need to ensure that for the shared work directory, the do_patch signatures match
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# The real WORKDIR location isn't a dependency for the shared workdir.
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src_patches[vardepsexclude] = "WORKDIR"
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should_apply[vardepsexclude] += "PN"
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