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From "Farid Zaripov (JIRA)" <j...@apache.org>
Subject [jira] Created: (STDCXX-982) CPPOPTS, CXXOPTS and LDOPTS aren't used in etc/config/src/libc_decl.sh
Date Wed, 02 Jul 2008 16:07:44 GMT
CPPOPTS, CXXOPTS and LDOPTS aren't used in etc/config/src/libc_decl.sh
----------------------------------------------------------------------

                 Key: STDCXX-982
                 URL: https://issues.apache.org/jira/browse/STDCXX-982
             Project: C++ Standard Library
          Issue Type: Bug
          Components: Configuration
    Affects Versions: 4.2.1, 4.2.0
         Environment: Ubuntu Linux, Cygwin, MinGW
            Reporter: Farid Zaripov
             Fix For: 4.2.2


On Cygwin it's possible to build library in two modes:
1) with using cygwin1.dll (POSIX compatibility layer)
2) without using cygwin1.dll - the same result as if you're using MinGW compiler

For building library in MinGW mode the compiler and linker options should be extended with
-mno-cygwin option.

I've tried to use CPPOPTS, CXXOPTS and LDOPTS make variables, described in README file:

{noformat}
$ make builddir BUILDDIR=mingw15s BUILDTYPE=15s CONFIG=gcc.config CXXOPTS=-mno-cygwin LDOPTS=-mno-cygwin
$ cd mingw15s/include && make CXXOPTS=-mno-cygwin LDOPTS=-mno-cygwin
{noformat}

  The config.log file shows that -mno-cygwin option is used only once at linking stage of
the sanity test:

{noformat}
int main () { return 0; }
gcc -D_RWSTDDEBUG -D_REENTRANT -mthreads -I. -pedantic -nostdinc++ -g   -W -Wall -Wcast-qual
-Winline -Wshadow -Wwrite-strings -Wno-long-long -Wcast-align  -c a.cpp -o a.o
gcc a.o -mthreads  -mno-cygwin -lm -lsupc++ -lcatgets -liconv  -o a.out
int main () { return sizeof (int); }

int main () { return sizeof (long); }

int main () { return sizeof (long long); }

int main () { return sizeof (void*); }

int main () { int i = 1; return *(char*)&i; }

gcc -E  -D_RWSTDDEBUG -D_REENTRANT -mthreads -pedantic -nostdinc++ -g   /tmp/assert-2408.cpp
>/tmp/assert-2408.i
/tmp/assert-2408.cpp:1:19: cassert: No such file or directory
gcc -E  -D_RWSTDDEBUG -D_REENTRANT -mthreads -pedantic -nostdinc++ -g   /tmp/assert-2408.cpp
>/tmp/assert-2408.i
...
{noformat}

The same effect observing on Ubuntu Linux.

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