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When compiling LLVM 3.3 under Cygwin, g++ does not find the appropriate header files, although they are surely present.

$ make --trace

g++ -I/cygdrive/c/llvm-3.3.src/include -I/cygdrive/c/llvm-3.3.src/lib/Support -D_DEBUG -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -O3 -fomit-frame-pointer -fvisibility-inlines-hidden -fno-exceptions -fno-rtti -Woverloaded-virtual -Wcast-qual -Wall -W -Wno-unused-parameter -Wwrite-strings -c -MMD -MP -MF "/cygdrive/c/llvm-3.3.src/lib/Support/Release+Asserts/APFloat.d.tmp" -MT "/cygdrive/c/llvm-3.3.src/lib/Support/Release+Asserts/APFloat.o" -MT "/cygdrive/c/llvm-3.3.src/lib/Support/Release+Asserts/APFloat.d" APFloat.cpp -o /cygdrive/c/llvm-3.3.src/lib/Support/Release+Asserts/APFloat.o

fatal error: 'llvm/ADT/APFloat.h' file not found

What could be the problem?

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1 Answer 1

You are probably running g++ from your MinGW installation. Check if it's in the PATH with which g++.

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