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Re: FYI: preproc vs. compiler in CHECK_HEADER
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From: |
Paolo Bonzini |
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Subject: |
Re: FYI: preproc vs. compiler in CHECK_HEADER |
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Date: |
Mon, 24 Feb 2003 11:53:03 +0100 |
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User-agent: |
KMail/1.4.2 |
> AC_MSG_WARN([$1: accepted by the compiler, rejected by the preprocessor!])
> AC_MSG_WARN([$1: proceeding with the compiler's result])
I'd add another...
AC_MSG_WARN([$1: did you put any options to CFLAGS that belong in CPPFLAGS?])
In particular, this bit me recently when I gave -mno-cygwin option to CFLAGS
instead of CPPFLAGS, so the preprocessor saw the Cygwin header files and the
compiler saw the Mingw32 set of headers.
Paolo Bonzini