When trying to compile the mex-files of the Octave packages NaN-toolbox
and biosig, the error below is observed with the recent version of
octave in Cygwin,
According to
http://octave.1599824.n4.nabble.com/Problems-with-mkoctfile-using-GCC-4-8-1-td4657964.html
http://hg.savannah.gnu.org/hgweb/octave/file/811019b9ef57/libinterp/corefcn/mex.h#l67
the attached patch fixes this for Octave 3.6.4. I suggest to apply this
patch to Octave in Cygwin.
Cheers,
Alois
schloegl@WT7 /cygdrive/l/src/octave-forge/extra/NaN/src
$ mkoctfile --mex xptopen.cpp
In file included from /usr/include/octave-3.6.4/octave/mexproto.h:52:0,
from /usr/include/octave-3.6.4/octave/mex.h:77,
from xptopen.cpp:64:
/usr/lib/gcc/x86_64-pc-cygwin/4.8.2/include/c++/cstdlib: In function
‘long long int std::abs(long long int)’:
/usr/lib/gcc/x86_64-pc-cygwin/4.8.2/include/c++/cstdlib:174:20: error:
declaration of C function ‘long long int std::abs(long long int)’
conflicts with
abs(long long __x) { return __builtin_llabs (__x); }
^
/usr/lib/gcc/x86_64-pc-cygwin/4.8.2/include/c++/cstdlib:166:3: error:
previous declaration ‘long int std::abs(long int)’ here
abs(long __i) { return __builtin_labs(__i); }
^
/usr/lib/gcc/x86_64-pc-cygwin/4.8.2/include/c++/cstdlib: In function
‘__int128 std::abs(__int128)’:
/usr/lib/gcc/x86_64-pc-cygwin/4.8.2/include/c++/cstdlib:179:19: error:
declaration of C function ‘__int128 std::abs(__int128)’ conflicts with
abs(__int128 __x) { return __x >= 0 ? __x : -__x; }
^
/usr/lib/gcc/x86_64-pc-cygwin/4.8.2/include/c++/cstdlib:174:3: error:
previous declaration ‘long long int std::abs(long long int)’ here
abs(long long __x) { return __builtin_llabs (__x); }
^
/usr/lib/gcc/x86_64-pc-cygwin/4.8.2/include/c++/cstdlib:179:19: error:
declaration of C function ‘__int128 std::abs(__int128)’ conflicts with
abs(__int128 __x) { return __x >= 0 ? __x : -__x; }
^
/usr/lib/gcc/x86_64-pc-cygwin/4.8.2/include/c++/cstdlib:166:3: error:
previous declaration ‘long int std::abs(long int)’ here
abs(long __i) { return __builtin_labs(__i); }
^
--- /usr/include/octave-3.6.4/octave/mex.h.orig 2014-01-10 12:17:09.668140800 +0100
+++ /usr/include/octave-3.6.4/octave/mex.h 2014-01-10 12:18:07.926966100 +0100
@@ -64,6 +64,8 @@
#define mxMAXNAME 64
+#include "mexproto.h"
+
#if defined (__cplusplus)
extern "C" {
#endif
@@ -74,8 +76,6 @@
void mexFunction (int nlhs, mxArray* plhs[], int nrhs, const mxArray *prhs[]);
#endif
-#include "mexproto.h"
-
/* V4 floating point routines renamed in V5. */
#define mexIsNaN mxIsNaN
#define mexIsFinite mxIsFinite
--
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