[Buildroot] [PATCH 1/1] cc-tool: use the same C++ standard as boost

Ferdinand van Aartsen ferdinand at ombud.nl
Tue Oct 23 13:03:16 UTC 2018


Matthew Weber schreef op 2018-10-23 13:18:
> Ferdinand,
> 
> On Mon, Oct 22, 2018 at 9:18 AM Ferdinand van Aartsen
> <ferdinand at ombud.nl> wrote:
>> 
>> When boost context is enabled, we build boost with -std=c++11.
>> That causes cc-tool to fail, which was using the gcc default c++14.
>> 
>> Signed-off-by: Ferdinand van Aartsen <ferdinand at ombud.nl>
>> ---
>>  package/cc-tool/cc-tool.mk | 5 +++++
>>  1 file changed, 5 insertions(+)
>> 
>> diff --git a/package/cc-tool/cc-tool.mk b/package/cc-tool/cc-tool.mk
>> index e170e06a21..d5de920f6a 100644
>> --- a/package/cc-tool/cc-tool.mk
>> +++ b/package/cc-tool/cc-tool.mk
>> @@ -18,6 +18,11 @@ CC_TOOL_AUTORECONF = YES
>>  CC_TOOL_CONF_OPTS = --with-boost=$(STAGING_DIR)/usr
>>  CC_TOOL_CONF_ENV = LIBS="$(CC_TOOL_LIBS)"
>> 
>> +# With boost context selected, boost gets built with c++11
>> +ifeq 
>> ($(BR2_PACKAGE_BOOST_CONTEXT)$(BR2_TOOLCHAIN_GCC_AT_LEAST_4_7),yy)
>> +CC_TOOL_CONF_ENV += CXXFLAGS="$(TARGET_CXXFLAGS) -std=c++11"
>> +endif
>> +
>>  # Help boost.m4 find the Boost Regex library, which needs the pthread
>>  # library, but isn't detected using a modern (pkg-config) mechanism.
>>  ifeq ($(BR2_STATIC_LIBS),y)
>> --
> 
> I believe this one is related to this patch, any impacts?
> http://patchwork.ozlabs.org/patch/983327/
> 

You're right, hadn't spotted that one, then that seems to be the correct 
solution.

Ferdinand


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