9651974448
This patch adds libstdc++ to libports. With the previous version of the stdcxx library, the build system used the C++ standard library that comes with the compiler. This mechanism was prone to inconsistencies of types defined in the header files used at compile time of the tool chain and the types provided by our libc. By building the C++ standard library as part of the Genode build process, such inconsistencies cannot happen anymore. Note that the patch changes the meaning of the 'stdcxx' library for users that happened to rely on 'stdcxx' for hybrid Linux/Genode applications. For such uses, the original mechanism is still available, in the renamed form of 'toolchain_stdcxx'.
29 lines
1017 B
Makefile
29 lines
1017 B
Makefile
#
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# Support for using standard C++ headers for Genode programs
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#
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#
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# Add the location of the compiler's C++ headers to search path
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#
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# We add all header locations that have "c++" or "include-fixed" to the search
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# path. The 'c++' subdirectory contains the actual standard C++ headers.
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# However, for using them together with Boost, we need to access 'limits.h' as
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# provided within the 'include-fixed' location.
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#
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INC_DIR += $(shell echo "int main() {return 0;}" |\
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LANG=C $(CXX) -x c++ -v -E - 2>&1 |\
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sed '/^\#include <\.\.\.> search starts here:/,/^End of search list/!d' |\
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grep "c++")
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# avoid multiple definition of type _mbstate_t
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CC_CXX_OPT += -D_GLIBCXX_HAVE_MBSTATE_T
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#
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# Link libstdc++ that comes with the tool chain
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#
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ifneq ($(filter hardening_tool_chain, $(SPECS)),)
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EXT_OBJECTS += $(shell $(CUSTOM_CXX_LIB) $(CC_MARCH) -print-file-name=libstdc++.so)
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else
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EXT_OBJECTS += $(shell $(CUSTOM_CXX_LIB) $(CC_MARCH) -print-file-name=libstdc++.a)
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endif
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