Currently libjava doesn't check for the existance of math functions in libm
before declaring them. This results in warnings on Darwin PPC...
symbol _fabsf used from dynamic library /usr/lib/libm.dylib(fabs.o) not from
earlier dynamic library /sw/lib/gcc4/lib/libgcj.8.dylib(sf_fabs.o)
symbol _fabs used from dynamic library /usr/lib/libm.dylib(fabs.o) not from
earlier dynamic library /sw/lib/gcc4/lib/libgcj.8.dylib(s_fabs.o)
symbol _scalbn used from dynamic library /usr/lib/libm.dylib(scalb.o) not from
earlier dynamic library
/sw/lib/gcc4/lib/libgcj.8.dylib(s_scalbn.o/sw/lib/odcctool
s/bin/ld: warning suggest use of -bind_at_load, as lazy binding may result in
errors or different symbols being used
)
creating gappletviewer
We should be using wrappers like libgfortran/intrinsics/c99_functions.c does.
In this case we need...
Index: classpath/native/fdlibm/sf_fabs.c
===================================================================
--- classpath/native/fdlibm/sf_fabs.c (revision 117342)
+++ classpath/native/fdlibm/sf_fabs.c (working copy)
@@ -19,6 +19,8 @@
#include "fdlibm.h"
+#ifndef HAVE_FABSF
+#define HAVE_FABSF 1
#ifdef __STDC__
float fabsf(float x)
#else
@@ -31,9 +33,12 @@
SET_FLOAT_WORD(x,ix&0x7fffffff);
return x;
}
+#endif
#ifdef _DOUBLE_IS_32BITS
+#ifndef HAVE_FABS
+#define HAVE_FABS 1
#ifdef __STDC__
double fabs(double x)
#else
@@ -43,5 +48,6 @@
{
return (double) fabsf((float) x);
}
+#endif
#endif /* defined(_DOUBLE_IS_32BITS) */
Index: classpath/native/fdlibm/s_scalbn.c
===================================================================
--- classpath/native/fdlibm/s_scalbn.c (revision 117342)
+++ classpath/native/fdlibm/s_scalbn.c (working copy)
@@ -32,6 +32,8 @@ twom54 = 5.55111512312578270212e-17, /
huge = 1.0e+300,
tiny = 1.0e-300;
+#ifndef HAVE_SCALBN
+#define HAVE_SCALBN 1
#ifdef __STDC__
double scalbn (double x, int n)
#else
@@ -63,3 +65,4 @@ tiny = 1.0e-300;
return x*twom54;
}
#endif /* _DOUBLE_IS_32BITS */
+#endif
--
Summary: autoconf should be used in libjava to check for fabs,
fabsf and scalbn
Product: gcc
Version: 4.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: java
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: howarth at nitro dot med dot uc dot edu
GCC build triplet: powerpc-apple-darwin8
GCC host triplet: powerpc-apple-darwin8
GCC target triplet: powerpc-apple-darwin8
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29304
