5931db0de9
Newer versions of GDB need pthread debugging support if threads are enabled, which is always the case for glibc but is a configure option for uClibc. We have solved this for internal toolchains by selecting the BR2_PTHREAD_DEBUG option from the GDB selection if needed, but as this option isn't available when ctng/external toolchains are used, mconf prints ugly warnings and the build may fail if an external uClibc toolchain without pthread debugging support is used. Fix it by introducing 2 more hidden config options: - BR2_TOOLCHAIN_HAS_THREADS_DEBUG - BR2_TOOLCHAIN_HAS_THREADS_DEBUG_IF_NEEDED The first tells us if the toolchain HAS pthreads debugging support, and is checked by check_uclibc_feature in helper.mk for external uClibc based toolchains. The second tells us if the toolchain is ABLE TO provide pthreads debugging support if threads are enabled, either because it's an internal toolchain where we can force enable it or an external glibc/eglibc toolchain or uClibc with the option enabled. Crosstool-ng forcibly enables this support, so those will always work. The preconfigured uClibc-based toolchains we have also all enable it. Finally, show a comment if this isn't the case so the (external toolchain) user knows why. This is placed outside the choice option, as menuconfig has a bug where it doesn't show choice selections which only contain comments. Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
42 lines
1.2 KiB
Plaintext
42 lines
1.2 KiB
Plaintext
menu "Toolchain"
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choice
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prompt "Toolchain type"
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help
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Select whether to use the toolchain provided by buildroot
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or an external toolchain.
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Some vendors provide toolchains in binary form, some in
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source form.
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config BR2_TOOLCHAIN_BUILDROOT
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bool "Buildroot toolchain"
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select BR2_TOOLCHAIN_HAS_SHADOW_PASSWORDS
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select BR2_TOOLCHAIN_HAS_THREADS_DEBUG_IF_NEEDED
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config BR2_TOOLCHAIN_EXTERNAL
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bool "External toolchain"
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help
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Select if you want to use an existing cross-compiling
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toolchain. Buildroot can either download automatically a
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toolchain, or use an already installed toolchain.
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config BR2_TOOLCHAIN_CTNG
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bool "Crosstool-NG toolchain"
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select BR2_TOOLCHAIN_HAS_SHADOW_PASSWORDS
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select BR2_TOOLCHAIN_HAS_THREADS_DEBUG_IF_NEEDED
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help
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Say 'y' if you want to generate the toolchain with crosstool-NG
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( http://ymorin.is-a-geek.org/projects/crosstool )
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This is considered experimental, and you can expect some breakage.
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endchoice
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source "toolchain/toolchain-buildroot/Config.in"
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source "toolchain/toolchain-external/Config.in"
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source "toolchain/toolchain-crosstool-ng/Config.in"
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source "toolchain/toolchain-common.in"
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source "toolchain/toolchain-buildroot/Config.in.2"
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endmenu
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