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Added more checks in 'configure.in'.

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This commit is contained in:
Vincent Richard 2004-12-30 11:10:10 +00:00
parent da55bd2c26
commit 6446ea1f68
1 changed files with 136 additions and 0 deletions
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@ -1116,6 +1116,132 @@ AM_PROG_LIBTOOL
AM_PROG_CC_C_O
#
# Some checks
#
# -- global constructors (stolen from 'configure.in' in libsigc++)
AC_MSG_CHECKING([if linker supports global constructors])
cat > mylib.$ac_ext <<EOF
#include <stdio.h>
struct A
{
A() { printf(\"PASS\\n\"); }
};
A a;
int foo()
{ return 1; }
EOF
cat > mytest.$ac_ext <<EOF
#include <stdio.h>
extern int foo();
int main(int, char**)
{
int i = foo();
if(i != 1) printf(\"FAIL\\n\");
return 0;
}
EOF
sh libtool --mode=compile $CXX -c mylib.$ac_ext >&5
sh libtool --mode=link $CXX -o libtest.la -rpath / -version-info 0 mylib.lo >&5
$CXX -c $CFLAGS $CPPFLAGS mytest.$ac_ext >&5
sh libtool --mode=link $CXX -o mytest mytest.o libtest.la >&5 2>/dev/null
if test -x mytest; then
myresult=`./mytest`
if test "X$myresult" = "XPASS"; then
AC_MSG_RESULT(yes)
else
AC_MSG_RESULT(no)
AC_ERROR([
===================================================================
ERROR: This platform lacks support of construction of global
objects in shared librarys.
See ftp://rtfm.mit.edu/pub/usenet/news.answers/g++-FAQ/plain
for details about this problem. Also for possible solutions
http://www.informatik.uni-frankfurt.de/~fp/Tcl/tcl-c++/tcl-c++.html
===================================================================])
fi
else
AC_MSG_RESULT(unknown)
fi
rm -f mylib.* mytest.* libtest.la .libs/libtest* mytest .libs/mytest .libs/lt-mytest .libs/mylib.* >&5
rmdir .libs >&5
# -- const_cast
AC_MSG_CHECKING([if C++ compiler supports const_cast<> (required)])
AC_TRY_COMPILE(
[
class foo;
],[
const foo *c=0;
foo *c1=const_cast<foo*>(c);
],[
AC_MSG_RESULT(yes)
],[
AC_MSG_RESULT(no)
AC_ERROR(C++ compiler const_cast<> does not work)
])
# -- dynamic_cast
AC_MSG_CHECKING([if C++ compiler supports dynamic_cast<> (required)])
AC_TRY_COMPILE(
[
class foo { virtual ~foo() { } };
class bar : public foo { };
],[
foo *c=0;
bar *c1=dynamic_cast<bar*>(c);
],[
AC_MSG_RESULT(yes)
],[
AC_MSG_RESULT(no)
AC_ERROR(C++ compiler dynamic_cast<> does not work)
])
# -- mutable
AC_MSG_CHECKING(if C++ compiler supports mutable (required))
AC_TRY_COMPILE(
[
class k {
mutable char *c;
public:
void foo() const { c=0; }
};
],[
],[
AC_MSG_RESULT(yes)
],[
AC_MSG_RESULT(no)
AC_ERROR(C++ compiler does not support 'mutable')
])
# -- namespace
AC_MSG_CHECKING(if C++ compiler supports name spaces (required))
AC_TRY_COMPILE(
[
namespace Check
{
int i;
}
],[
Check::i=1;
],[
AC_MSG_RESULT(yes)
],[
AC_MSG_RESULT(no)
AC_ERROR(C++ compiler does not support 'namespace')
])
#
# Target OS and architecture
#
@ -1299,6 +1425,14 @@ AC_SUBST(PKGCONFIG_LIBS)
EXTRA_CFLAGS="$EXTRA_CFLAGS -D_REENTRANT=1"
EXTRA_LIBS=""
CFLAGS=""
if test x$VMIME_DEBUG = x1 ; then
CFLAGS="$CFLAGS -g"
else
CFLAGS="$CFLAGS -O2"
fi
#
# Check to see if the compiler can handle some flags
@ -1319,6 +1453,8 @@ EXTRA_LIBS=""
EXTRA_CFLAGS=`echo $EXTRA_CFLAGS | sed -e 's| |\\n|g' | sort | uniq | tr '\\n' ' '`
EXTRA_LIBS=`echo $EXTRA_LIBS | sed -e 's|^ ||g' | sed -e 's| | |g'`
AC_SUBST(CFLAGS)
AC_SUBST(EXTRA_CFLAGS)
AC_SUBST(EXTRA_LIBS)