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From: "Sebastien Vauban" <wxhgmqzgwmuf-geNee64TY+gS+FvcfC7Uqw@public.gmane.org>
Subject: Re: Problem compiling C++ in Org-mode
Date: Fri, 18 Nov 2011 23:57:05 +0100
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Hi Michael,

Michael Hannon wrote:
> Just for the record, adding the following to my .emacs file seems to solve
> the problem I was having, where the C++ compiler was compiling a source
> block (written=C2=A0 to a temporary file in /tmp/...) and was unable to f=
ind an
> include file in the current working directory:
>
> (setq org-babel-C++-compiler
> =C2=A0=C2=A0=C2=A0 (concat "g++ -std=3Dc++0x "
> =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 "-I"
> =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 (expan=
d-file-name ".")
> =C2=A0=C2=A0=C2=A0 )
> )

Your previous version contained "-I~/...". I don't know why you changed it,
but this could eventually enlighten you:

    =E2=94=8F=E2=94=81=E2=94=81=E2=94=81=E2=94=81[ from Cygwin's ML]
    =E2=94=83 "If a word begins with an unquoted tilde character (`~'), all=
 of the
    =E2=94=83 characters up to the first unquoted slash (or all characters,=
 if there
    =E2=94=83 is no unquoted slash) are considered a TILDE-PREFIX."
    =E2=94=83
    =E2=94=83 Note "word begins". I've been bitten by this in a makefile:
    =E2=94=83
    =E2=94=83 OPENSSL_DIR :=3D ~/lib/openssl
    =E2=94=83 CPPFLAGS :=3D -I$(OPENSSL_DIR)
    =E2=94=83
    =E2=94=83 The gcc command line then contained -I~/lib/openssl, and the =
~ was not
    =E2=94=83 expanded by the shell. ${HOME}/lib/openssl would have worked.
    =E2=94=97=E2=94=81=E2=94=81=E2=94=81=E2=94=81

Best regards,
  Seb

--=20
Sebastien Vauban