2019-02-03 01:14:51 -05:00
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rc_include rc/CXX.rc
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base="${1#rc/}"
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src="${base%.hpp.precompiled.rc}"
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2019-02-25 13:09:11 +00:00
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# Check whether the compiler supports forcing
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# the language type. Some versions of gcc
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# need this in order to precompile headers
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# named *.hpp.
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x="-x${NL}c++-header"
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if (appendln CXXFLAGS "$x" && rc_compile cxx nolink); then
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rc_appendln CXXFLAGS_PCH_LANG "$x"
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fi
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2019-02-03 01:14:51 -05:00
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# The existence of the specific gcc warning about
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# precompiled headers is a pretty good indicator
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# that they are supported in the way we expect.
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2019-02-25 13:09:11 +00:00
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rc_appendln CXXFLAGS "-Winvalid-pch"
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2019-02-03 01:14:51 -05:00
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if rc_compile cxx nolink; then
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rc_appendln CXXFLAGS_PCH "-include$NL$src.hpp"
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rc_appendln CXXFLAGS_PCH_FPIC "-include$NL$src.hpp.fpic"
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rc_appendln PRE_CXX_TARGETS "$src.hpp.gch"
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rc_appendln PRE_CXX_TARGETS_FPIC "$src.hpp.fpic.gch"
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rc_save
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else
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echo "Precompiled C++ headers not supported." >&2
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rc_undo
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fi
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