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From: "Kushal Kumaran" <max_payne AT hotpop DOT com>
To: <djgpp AT delorie DOT com>
Subject: -ansi breaks gpp?
Date: Sat, 25 Oct 2003 00:26:05 +0530
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Reply-To: djgpp AT delorie DOT com

I am unable to use the -ansi switch with the most trivial C++
programs:

-- Begin test.cc
#include<cmath>

int main() {
}
-- End test.cc

-- Begin compilation transcript (copied and pasted from Emacs)
cd c:\foo\cc\
gpp -v -ansi -o test.exe test.cc
Reading specs from c:/djgpp/lib/gcc-lib/djgpp/3.32/specs
Configured with: /devel/gnu/gcc/3.3/gnu/gcc-3.32/configure
i586-pc-msdosdjgpp --prefix=/dev/env/DJDIR --disable-nls
Thread model: single
gcc version 3.3.2

c:/djgpp/lib/gcc-lib/djgpp/3.32/cc1plus.exe -quiet -v -D__GNUC__=3 -D_
_GNUC_MINOR__=3 -D__GNUC_PATCHLEVEL__=2 -remap -imacros
c:/djgpp/lib/gcc-lib/djgpp/3.32/djgpp.ver
test.cc -D__GNUG__=3 -quiet -dumpbase test.cc -ansi -auxbase
test -ansi -version -o c:/djgpp/tmp/cc2dYfBE.s
GNU C++ version 3.3.2 (djgpp)
	compiled by GNU C version 3.3.2.
GGC heuristics: --param ggc-min-expand=30 --param
ggc-min-heapsize=4096
ignoring nonexistent directory "c:/djgpp/djgpp/include"
#include "..." search starts here:
#include <...> search starts here:
 c:/djgpp/lang/cxx/3.32
 c:/djgpp/lang/cxx/3.32/djgpp
 c:/djgpp/lang/cxx/3.32/backward
 c:/djgpp/lib/gcc-lib/djgpp/3.32/include
 c:/djgpp/include
End of search list.
In file included from test.cc:1:
c:/djgpp/lang/cxx/3.32/cmath:107: error: `acosf' not declared
c:/djgpp/lang/cxx/3.32/cmath:110: error: `asinf' not declared
c:/djgpp/lang/cxx/3.32/cmath:113: error: `atanf' not declared
c:/djgpp/lang/cxx/3.32/cmath:116: error: `atan2f' not declared
c:/djgpp/lang/cxx/3.32/cmath:119: error: `ceilf' not declared
c:/djgpp/lang/cxx/3.32/cmath:122: error: `coshf' not declared
c:/djgpp/lang/cxx/3.32/cmath:125: error: `expf' not declared
c:/djgpp/lang/cxx/3.32/cmath:128: error: `floorf' not declared
c:/djgpp/lang/cxx/3.32/cmath:131: error: `fmodf' not declared
c:/djgpp/lang/cxx/3.32/cmath:134: error: `frexpf' not declared
c:/djgpp/lang/cxx/3.32/cmath:137: error: `ldexpf' not declared
c:/djgpp/lang/cxx/3.32/cmath:140: error: `logf' not declared
c:/djgpp/lang/cxx/3.32/cmath:143: error: `log10f' not declared
c:/djgpp/lang/cxx/3.32/cmath:146: error: `modff' not declared
c:/djgpp/lang/cxx/3.32/cmath:149: error: `powf' not declared
c:/djgpp/lang/cxx/3.32/cmath:152: error: `sinhf' not declared
c:/djgpp/lang/cxx/3.32/cmath:155: error: `tanf' not declared
c:/djgpp/lang/cxx/3.32/cmath:158: error: `tanhf' not declared
c:/djgpp/lang/cxx/3.32/cmath: In function `float std::acos(float)':
c:/djgpp/lang/cxx/3.32/cmath:184: error: `acosf' undeclared in
namespace `
   __gnu_cxx::__c99_binding'
c:/djgpp/lang/cxx/3.32/cmath: In function `float std::asin(float)':
c:/djgpp/lang/cxx/3.32/cmath:204: error: `asinf' undeclared in
namespace `
   __gnu_cxx::__c99_binding'
c:/djgpp/lang/cxx/3.32/cmath: In function `float std::atan(float)':
c:/djgpp/lang/cxx/3.32/cmath:222: error: `atanf' undeclared in
namespace `
   __gnu_cxx::__c99_binding'
c:/djgpp/lang/cxx/3.32/cmath: In function `float std::atan2(float,
float)':
c:/djgpp/lang/cxx/3.32/cmath:240: error: `atan2f' undeclared in
namespace `
   __gnu_cxx::__c99_binding'
c:/djgpp/lang/cxx/3.32/cmath: In function `float std::ceil(float)':
c:/djgpp/lang/cxx/3.32/cmath:260: error: `ceilf' undeclared in
namespace `
   __gnu_cxx::__c99_binding'
c:/djgpp/lang/cxx/3.32/cmath: In function `float std::cosh(float)':
c:/djgpp/lang/cxx/3.32/cmath:288: error: `coshf' undeclared in
namespace `
   __gnu_cxx::__c99_binding'
c:/djgpp/lang/cxx/3.32/cmath: In function `float std::exp(float)':
c:/djgpp/lang/cxx/3.32/cmath:306: error: `expf' undeclared in
namespace `
   __gnu_cxx::__c99_binding'
c:/djgpp/lang/cxx/3.32/cmath: In function `float std::floor(float)':
c:/djgpp/lang/cxx/3.32/cmath:334: error: `floorf' undeclared in
namespace `
   __gnu_cxx::__c99_binding'
c:/djgpp/lang/cxx/3.32/cmath: In function `float std::fmod(float,
float)':
c:/djgpp/lang/cxx/3.32/cmath:352: error: `fmodf' undeclared in
namespace `
   __gnu_cxx::__c99_binding'
c:/djgpp/lang/cxx/3.32/cmath: In function `float std::frexp(float,
int*)':
c:/djgpp/lang/cxx/3.32/cmath:372: error: `frexpf' undeclared in
namespace `
   __gnu_cxx::__c99_binding'
c:/djgpp/lang/cxx/3.32/cmath: In function `float std::ldexp(float,
int)':
c:/djgpp/lang/cxx/3.32/cmath:391: error: `ldexpf' undeclared in
namespace `
   __gnu_cxx::__c99_binding'
c:/djgpp/lang/cxx/3.32/cmath: In function `float std::log(float)':
c:/djgpp/lang/cxx/3.32/cmath:411: error: `logf' undeclared in
namespace `
   __gnu_cxx::__c99_binding'
c:/djgpp/lang/cxx/3.32/cmath: In function `float std::log10(float)':
c:/djgpp/lang/cxx/3.32/cmath:429: error: `log10f' undeclared in
namespace `
   __gnu_cxx::__c99_binding'
c:/djgpp/lang/cxx/3.32/cmath: In function `float std::modf(float,
float*)':
c:/djgpp/lang/cxx/3.32/cmath:447: error: `modff' undeclared in
namespace `
   __gnu_cxx::__c99_binding'
c:/djgpp/lang/cxx/3.32/cmath: In function `long double std::modf(long
double,
   long double*)':
c:/djgpp/lang/cxx/3.32/cmath:461: error: `::modfl' undeclared (first
use here)
c:/djgpp/lang/cxx/3.32/cmath: In function `float std::pow(float,
float)':
c:/djgpp/lang/cxx/3.32/cmath:486: error: `powf' undeclared in
namespace `
   __gnu_cxx::__c99_binding'
c:/djgpp/lang/cxx/3.32/cmath: In function `float std::sinh(float)':
c:/djgpp/lang/cxx/3.32/cmath:528: error: `sinhf' undeclared in
namespace `
   __gnu_cxx::__c99_binding'
c:/djgpp/lang/cxx/3.32/cmath: In function `float std::tan(float)':
c:/djgpp/lang/cxx/3.32/cmath:556: error: `tanf' undeclared in
namespace `
   __gnu_cxx::__c99_binding'
c:/djgpp/lang/cxx/3.32/cmath: In function `float std::tanh(float)':
c:/djgpp/lang/cxx/3.32/cmath:574: error: `tanhf' undeclared in
namespace `
   __gnu_cxx::__c99_binding'

Compilation finished at Fri Oct 24 11:02:21
-- End compilation transcript

The problem goes away if
1. certain headers are not included(including only string works,
   iostream doesn't)
2. -ansi switch is not used, or
3. C programs are compiled, with or without -ansi.

Am I doing something wrong? Does the -ansi switch simply not work
with C++? I couldn't find any references to the -ansi switch at
google.

Also, in the above messages, there is a complaint about 'nonexistent
directory "c:/djgpp/djgpp/include"'. Where does this come from? I
removed
my djgpp directory and unzipped just djdev203, bnu214, gcc332, gpp332
and tried again, with the same errors.

TIA,
Kushal.