could not setup config headers machinery

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I'm trying to sort out why the latest version of the GNU Scientific Library (GSL)

ftp://ftp.gnu.org/gnu/gsl/gsl-1.14.tar.gz

does not build properly on some AIX systems (the developers are aware of it).

I need to check if 'fprnd_t' is defined in float.h or not.

Is there any particular trick needed to check for things in float.h?


The *only* change I've made is this single line in configure.ac

AC_CHECK_DECLS([fprnd_t],[],[],[[#include <float.h>]])

But after running will always cause the generated configure script to fail to execute properly - see below. Notice it does not find 'fprnd_t', (on the second line) but then later generates an error.

checking whether isinf is declared... no
checking whether fprnd_t is declared... no
checking whether isfinite is declared... no
checking whether finite is declared... yes
checking whether isnan is declared... yes
checking whether log1p is declared... yes
checking for long double stdio... yes
checking for extended floating point registers... yes
checking for IEEE arithmetic interface type... solaris
checking for IEEE compiler flags... none
checking for IEEE comparisons... yes
checking for IEEE denormalized values... yes
configure: creating ./config.status
config.status: error: invalid argument: `Makefile.'
config.status: error: could not setup config headers machinery


Conversely, if I change it to


AC_CHECK_DECLS([fprnd_t],[],[],[[#include <math.h>]])

then the configure script works. But checking in math.h is not a lot of use when I want to check in float.h

I've attached a copy of the configure.ac that fails for me. Have you any suggestions what I can do to make this check for fprnd_t in float.h?

The annoying this is, I could have swore this was working at one time, but perhaps that was on the IBM machine, whereas I'm now running on a Sun. But that seems unlikely to be the reason.

Dave
dnl Process this file with autoconf to produce a configure script.

AC_INIT([gsl],[1.14])
AC_CONFIG_SRCDIR(gsl_math.h)

AM_INIT_AUTOMAKE([gnu])
AC_CONFIG_HEADERS([config.h])
AM_MAINTAINER_MODE

dnl Library versioning (C:R:A == current:revision:age)
dnl See the libtool manual for an explanation of the numbers
dnl
dnl gsl-1.0    libgsl 0:0:0  libgslcblas 0:0:0
dnl gsl-1.1    libgsl 1:0:1  libgslcblas 0:0:0
dnl gsl-1.1.1  libgsl 2:0:2  libgslcblas 0:0:0
dnl gsl-1.2    libgsl 3:0:3  libgslcblas 0:0:0
dnl gsl-1.3    libgsl 4:0:4  libgslcblas 0:0:0
dnl gsl-1.4    libgsl 5:0:5  libgslcblas 0:0:0
dnl gsl-1.5    libgsl 6:0:6  libgslcblas 0:0:0
dnl gsl-1.6    libgsl 7:0:7  libgslcblas 0:0:0
dnl gsl-1.7    libgsl 8:0:8  libgslcblas 0:0:0
dnl gsl-1.8    libgsl 9:0:9  libgslcblas 0:0:0
dnl gsl-1.9    libgsl 10:0:10 libgslcblas 0:0:0 
dnl gsl-1.10   libgsl 10:0:10 (*) libgslcblas 0:0:0 
dnl gsl-1.11   libgsl 12:0:12  libgslcblas 0:0:0 
dnl gsl-1.12   libgsl 13:0:13  libgslcblas 0:0:0 
dnl gsl-1.13   libgsl 14:0:14  libgslcblas 0:0:0 
dnl gsl-1.14   libgsl 15:0:15  libgslcblas 0:0:0 
dnl 
dnl (*) There was an error on this release.  Firstly, the versioning
dnl numbers were not updated.  Secondly, 2 functions were removed, but
dnl the age not reset--this should have been 11:0:0.  However these
dnl functions were not documented and are regarded as internal, so we
dnl will assume 11:0:11.
dnl
dnl How to update library version number
dnl ====================================
dnl 
dnl C: increment if the interface has additions, changes, removals.
dnl
dnl R: increment any time the source changes; set to 0 if you
dnl incremented CURRENT
dnl
dnl A: increment if any interfaces have been added; set to 0 if any
dnl interfaces have been removed. removal has precedence over adding,
dnl so set to 0 if both happened.

dnl
GSL_CURRENT=15
GSL_REVISION=0
GSL_AGE=15
dnl
CBLAS_CURRENT=0
CBLAS_REVISION=0
CBLAS_AGE=0

GSL_LT_VERSION="${GSL_CURRENT}:${GSL_REVISION}:${GSL_AGE}"
AC_SUBST(GSL_LT_VERSION)

GSL_LT_CBLAS_VERSION="${CBLAS_CURRENT}:${CBLAS_REVISION}:${CBLAS_AGE}"
AC_SUBST(GSL_LT_CBLAS_VERSION)

case "$VERSION" in
    *+)
        ;;
    *)
        AC_DEFINE(RELEASED,[],[Defined if this is an official release])
        ;;
esac

dnl Split VERSION into GSL_VERSION_MAJOR and GSL_VERSION_MINOR
dnl Follows AX_SPLIT_VERSION macro from AC-Archive
dnl Rhys Ulerich <rhys.ulerich@xxxxxxxxx>
AC_PROG_SED
GSL_MAJOR_VERSION=`echo "$VERSION" | $SED 's/\([[^.]][[^.]]*\).*/\1/'`
GSL_MINOR_VERSION=`echo "$VERSION" | $SED 's/[[^.]][[^.]]*.\([[^.]][[^.]]*\).*/\1/'`
AC_SUBST(GSL_MAJOR_VERSION)
AC_SUBST(GSL_MINOR_VERSION)

dnl things required by automake
dnl AC_ARG_PROGRAM
AC_PROG_MAKE_SET

dnl Check for which system.
AC_CANONICAL_HOST

dnl Checks for programs.
AC_LANG(C)
AC_PROG_CC
AC_PROG_CPP
AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_LIBTOOL

dnl Check compiler features
AC_TYPE_SIZE_T
dnl AC_C_CONST
AC_C_VOLATILE
AC_C_INLINE
AC_C_CHAR_UNSIGNED

GSL_CFLAGS="-I$includedir"
GSL_LIBS="-L$libdir -lgsl"

AC_SUBST(GSL_CFLAGS)
AC_SUBST(GSL_LIBS)

if test "$ac_cv_c_inline" != no ; then 
dnl Check for "extern inline", using a modified version of the test
dnl for AC_C_INLINE from acspecific.mt
dnl
   AC_CACHE_CHECK([for GNU-style extern inline], ac_cv_c_extern_inline,
   [ac_cv_c_extern_inline=no
   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[extern $ac_cv_c_inline double foo(double x);
   extern $ac_cv_c_inline double foo(double x) { return x + 1.0 ; } ;
   double foo (double x) { return x + 1.0 ; };]], [[  foo(1.0)  ]])],[ac_cv_c_extern_inline="yes"],[])
   ])

   if test "$ac_cv_c_extern_inline" != no ; then
      AC_DEFINE(HAVE_INLINE,[1],[Define if you have inline])
   else
      AC_CACHE_CHECK([for C99-style inline], ac_cv_c_c99inline,
      [ac_cv_c_c99inline=no
      dnl next line is a necessary condition
      AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[extern inline void* foo() { foo(); return &foo ; };]], 
      [[  return foo() != 0 ]])],[ac_cv_c_c99inline="yes"],[])
      dnl but not sufficient, extern must work but inline on its own should not
      if test "$ac_cv_c_c99inline" != no ; then
            AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[inline void* foo() { foo(); return &foo ; };]], 
            [[  return foo() != 0 ]])],[],ac_cv_c_c99inline="no")
      fi
      ])
      if test "$ac_cv_c_c99inline" != no ; then
         AC_DEFINE(HAVE_INLINE,[1],[Define if you have inline])
         AC_DEFINE(HAVE_C99_INLINE,[1],[Define if you have inline with C99 behavior])
      fi
   fi
fi

dnl Checks for header files.
AC_CHECK_HEADERS(ieeefp.h)

dnl Checks for typedefs, structures, and compiler characteristics.

case "$host_os" in
     *mingw*)
	MINGW=true
	;;
esac

AM_CONDITIONAL(MINGW32_HOST, test "$MINGW" = "true")

dnl Checks for library functions.

dnl AC_FUNC_ALLOCA
AC_FUNC_VPRINTF

dnl strcasecmp, strerror, xmalloc, xrealloc, probably others should be added.
dnl removed strerror from this list, it's hardcoded in the err/ directory
dnl Any functions which appear in this list of functions should be provided
dnl in the utils/ directory
dnl xmalloc is not used, removed (bjg)
AC_REPLACE_FUNCS(memcpy memmove strdup strtol strtoul)

AC_CACHE_CHECK(for EXIT_SUCCESS and EXIT_FAILURE,
ac_cv_decl_exit_success_and_failure,
AC_EGREP_CPP(yes,
[
#include <stdlib.h>
#ifdef EXIT_SUCCESS
yes
#endif
], 
ac_cv_decl_exit_success_and_failure=yes,
ac_cv_decl_exit_success_and_failure=no)
)

if test "$ac_cv_decl_exit_success_and_failure" = yes ; then
  AC_DEFINE(HAVE_EXIT_SUCCESS_AND_FAILURE,1,[Defined if you have ansi EXIT_SUCCESS and EXIT_FAILURE in stdlib.h])
fi ;

dnl Use alternate libm if specified by user

if test "x$LIBS" = "x" ; then
  AC_CHECK_LIB(m, cos)
fi

dnl Remember to put a definition in acconfig.h for each of these
AC_CHECK_DECLS(feenableexcept,,,[#define _GNU_SOURCE 1
#include <fenv.h>]) 
AC_CHECK_DECLS(fesettrapenable,,,[#define _GNU_SOURCE 1
#include <fenv.h>]) 
AC_CHECK_DECLS(hypot,,,[#include <math.h>]) 
AC_CHECK_DECLS(expm1,,,[#include <math.h>])
AC_CHECK_DECLS(acosh,,,[#include <math.h>])
AC_CHECK_DECLS(asinh,,,[#include <math.h>])
AC_CHECK_DECLS(atanh,,,[#include <math.h>])
AC_CHECK_DECLS(ldexp,,,[#include <math.h>])
AC_CHECK_DECLS(frexp,,,[#include <math.h>])
AC_CHECK_DECLS(isinf,,,[#include <math.h>])
AC_CHECK_DECLS([fprnd_t],[],[],[[#include <float.h>]])
AC_CHECK_DECLS(isfinite,,,[#include <math.h>])
AC_CHECK_DECLS(finite,,,[#include <math.h>
#if HAVE_IEEEFP_H
#include <ieeefp.h>
#endif])
AC_CHECK_DECLS(isnan,,,[#include <math.h>])

dnl OpenBSD has a broken implementation of log1p.
case "$host" in
    *-*-*openbsd*)
       AC_MSG_RESULT([avoiding OpenBSD system log1p - using gsl version])
       ;;
    *)
        AC_CHECK_DECLS(log1p,,,[#include <math.h>])
       ;;
esac

AC_CACHE_CHECK([for long double stdio], ac_cv_func_printf_longdouble,
[AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <stdlib.h>
#include <stdio.h>
int main (void) 
{ 
const char * s = "5678.25"; long double x = 1.234 ; 
fprintf(stderr,"%Lg\n",x) ; 
sscanf(s, "%Lg", &x);
if (x == 5678.25) {exit (0);} else {exit(1); };
}]])],[ac_cv_func_printf_longdouble="yes"],[ac_cv_func_printf_longdouble="no"],[ac_cv_func_printf_longdouble="no"])])

if test "$ac_cv_func_printf_longdouble" != no; then
  AC_DEFINE(HAVE_PRINTF_LONGDOUBLE,1,[Define this if printf can handle %Lf for long double])
fi

AC_CACHE_CHECK([for extended floating point registers],ac_cv_c_extended_fp,
[case "$host" in
    *sparc*-*-*)
        ac_cv_c_extended_fp=no
        ;;     
    *powerpc*-*-*)
        ac_cv_c_extended_fp=no
        ;;      
    *hppa*-*-*)
        ac_cv_c_extended_fp=no
        ;;      
    *alpha*-*-*)
        ac_cv_c_extended_fp=no
        ;;      
    *68k*-*-*)
        ac_cv_c_extended_fp=yes
        ;;      
    *86-*-*)
        ac_cv_c_extended_fp=yes
        ;;      
    x86_64-*-*)
        ac_cv_c_extended_fp=yes
        ;;      
    *) 
        ac_cv_c_extended_fp=unknown
        ;;
esac
])

if test $ac_cv_c_extended_fp != "no" ; then
    AC_DEFINE(HAVE_EXTENDED_PRECISION_REGISTERS,1,[Defined on architectures with excess floating-point precision])
fi

AC_CACHE_CHECK([for IEEE arithmetic interface type], ac_cv_c_ieee_interface,
[case "$host" in
    sparc-*-linux*) 
        ac_cv_c_ieee_interface=gnusparc
        ;;
    m68k-*-linux*) 
        ac_cv_c_ieee_interface=gnum68k
        ;;
    powerpc-*-linux*) 
        ac_cv_c_ieee_interface=gnuppc
        ;;
    *86-*-gnu | *86_64-*-gnu | *86-*-linux* | *86_64-*-linux*) 
        ac_cv_c_ieee_interface=gnux86
        ;;
    *-*-sunos4*) 
        ac_cv_c_ieee_interface=sunos4
        ;;
    *-*-solaris*) 
        ac_cv_c_ieee_interface=solaris
        ;;
    *-*-hpux11*) 
        ac_cv_c_ieee_interface=hpux11
        ;;
    *-*-hpux*) 
        ac_cv_c_ieee_interface=hpux
        ;;
    *-*-osf*) 
        ac_cv_c_ieee_interface=tru64
        ;;
    *-*-aix*) 
        ac_cv_c_ieee_interface=aix
        ;;
    *-*-irix*) 
        ac_cv_c_ieee_interface=irix
        ;;
    powerpc-*-*darwin*) 
        ac_cv_c_ieee_interface=darwin
        ;;
    *86-*-*darwin*) 
        ac_cv_c_ieee_interface=darwin86
        ;;
    *-*-*netbsd*) 
        ac_cv_c_ieee_interface=netbsd
        ;;
    *-*-*openbsd*)  
        ac_cv_c_ieee_interface=openbsd
        ;;
    *-*-*bsd*) 
        ac_cv_c_ieee_interface=freebsd
        ;;
    *-*-os2*)
        ac_cv_c_ieee_interface=os2emx
        ;;
    *)
        ac_cv_c_ieee_interface=unknown
        ;;
esac
])

if test "$ac_cv_c_ieee_interface" = "gnux86" ; then
    AC_CACHE_CHECK([for FPU_SETCW], ac_cv_c_fpu_setcw,
    [ac_cv_c_fpu_setcw=no
    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <fpu_control.h>
#ifndef _FPU_SETCW
#include <i386/fpu_control.h>
#define _FPU_SETCW(cw) __setfpucw(cw)
#endif
]], [[ unsigned short mode = 0 ; _FPU_SETCW(mode); ]])],[ac_cv_c_fpu_setcw="yes"],[ac_cv_c_ieee_interface=unknown])
    ])
fi

if test "$ac_cv_c_ieee_interface" = "gnux86" ; then
    AC_CACHE_CHECK([for SSE extensions], ac_cv_c_fpu_sse,
    [ac_cv_c_fpu_sse=no
    AC_RUN_IFELSE([AC_LANG_PROGRAM([[
#include <stdlib.h>
#define _FPU_SETMXCSR(cw_sse) asm volatile ("ldmxcsr %0" : : "m" (*&cw_sse))
]], [[ unsigned int mode = 0x1f80 ; _FPU_SETMXCSR(mode); exit(0); ]])],[ac_cv_c_fpu_sse="yes"],[ac_cv_c_fpu_sse="no"],[
        AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <stdlib.h>
#define _FPU_SETMXCSR(cw_sse) asm volatile ("ldmxcsr %0" : : "m" (*&cw_sse))
]], [[ unsigned int mode = 0x1f80 ; _FPU_SETMXCSR(mode); exit(0); ]])],[ac_cv_c_fpu_sse="yes"],[ac_cv_c_fpu_sse="no"])
])])

    if test $ac_cv_c_fpu_sse = yes; then
        AC_DEFINE([HAVE_FPU_X86_SSE], 1,
                  [Define if x86 processor has sse extensions.])
   fi
fi

ac_tr_ieee_interface=HAVE_`echo $ac_cv_c_ieee_interface | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`_IEEE_INTERFACE
AC_DEFINE_UNQUOTED($ac_tr_ieee_interface,1,[IEEE Interface Type])

AC_SUBST(HAVE_GNUSPARC_IEEE_INTERFACE)
AC_SUBST(HAVE_GNUM68K_IEEE_INTERFACE)
AC_SUBST(HAVE_GNUPPC_IEEE_INTERFACE)
AC_SUBST(HAVE_GNUX86_IEEE_INTERFACE)
AC_SUBST(HAVE_SUNOS4_IEEE_INTERFACE)
AC_SUBST(HAVE_SOLARIS_IEEE_INTERFACE)
AC_SUBST(HAVE_HPUX11_IEEE_INTERFACE)
AC_SUBST(HAVE_HPUX_IEEE_INTERFACE)
AC_SUBST(HAVE_TRU64_IEEE_INTERFACE)
AC_SUBST(HAVE_IRIX_IEEE_INTERFACE)
AC_SUBST(HAVE_AIX_IEEE_INTERFACE)
AC_SUBST(HAVE_FREEBSD_IEEE_INTERFACE)
AC_SUBST(HAVE_OS2EMX_IEEE_INTERFACE)
AC_SUBST(HAVE_NETBSD_IEEE_INTERFACE)
AC_SUBST(HAVE_OPENBSD_IEEE_INTERFACE)
AC_SUBST(HAVE_DARWIN_IEEE_INTERFACE)
AC_SUBST(HAVE_DARWIN86_IEEE_INTERFACE)

dnl Check for IEEE control flags

save_cflags="$CFLAGS"
AC_CACHE_CHECK([for IEEE compiler flags], ac_cv_c_ieee_flags,
[
case "$host" in
    alpha*-*-*)
        if test X"$GCC" = Xyes ; then
            ieee_flags='-mieee -mfp-rounding-mode=d'
        else
            # This assumes Compaq's C compiler.
            ieee_flags='-ieee -fprm d'
        fi
        ;;
esac
if test X"$ieee_flags" != X ; then
  CFLAGS="$ieee_flags $CFLAGS"
  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[int foo;]])],[ac_cv_c_ieee_flags="$ieee_flags"],[ac_cv_c_ieee_flags="none"])
else
  ac_cv_c_ieee_flags="none"
fi])

if test "$ac_cv_c_ieee_flags" != "none" ; then
   CFLAGS="$ac_cv_c_ieee_flags $save_cflags"
else
   CFLAGS="$save_cflags"
fi

dnl Check IEEE comparisons, whether "x != x" is true for NaNs
dnl
AC_CACHE_CHECK([for IEEE comparisons], ac_cv_c_ieee_comparisons,
[AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <math.h>
int main (void) 
{ 
   int status; double inf, nan;
   inf = exp(1.0e10);
   nan = inf / inf ;
   status = (nan == nan);
   exit (status);
}]])],[ac_cv_c_ieee_comparisons="yes"],[ac_cv_c_ieee_comparisons="no"],[ac_cv_c_ieee_comparisons="yes"])
])

if test "$ac_cv_c_ieee_comparisons" != no ; then
  AC_DEFINE(HAVE_IEEE_COMPARISONS,1,[Define this if IEEE comparisons work correctly (e.g. NaN != NaN)])
fi

dnl Check for IEEE denormalized arithmetic
dnl
AC_CACHE_CHECK([for IEEE denormalized values], ac_cv_c_ieee_denormals,
[AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <math.h> 
int main (void) 
{ 
   int i, status; 
   volatile double z = 1e-308;
   for (i = 0; i < 5; i++) { z = z / 10.0 ; };        
   for (i = 0; i < 5; i++) { z = z * 10.0 ; };
   status = (z == 0.0);
   exit (status);
}]])],[ac_cv_c_ieee_denormals="yes"],[ac_cv_c_ieee_denormals="no"],[ac_cv_c_ieee_denormals="yes"])
])

if test "$ac_cv_c_ieee_denormals" != no ; then
  AC_DEFINE(HAVE_IEEE_DENORMALS,1,[Define this if IEEE denormalized numbers are available])
fi

AH_TEMPLATE([HIDE_INLINE_STATIC],[Define if you need to hide the static definitions of inline functions])

AH_BOTTOM([/* Use 0 and 1 for EXIT_SUCCESS and EXIT_FAILURE if we don't have them */
#if !HAVE_EXIT_SUCCESS_AND_FAILURE
#define EXIT_SUCCESS 0
#define EXIT_FAILURE 1
#endif])

AH_BOTTOM([/* Define one of these if you have a known IEEE arithmetic interface */
#undef HAVE_GNUSPARC_IEEE_INTERFACE
#undef HAVE_GNUM68K_IEEE_INTERFACE
#undef HAVE_GNUPPC_IEEE_INTERFACE
#undef HAVE_GNUX86_IEEE_INTERFACE
#undef HAVE_SUNOS4_IEEE_INTERFACE
#undef HAVE_SOLARIS_IEEE_INTERFACE
#undef HAVE_HPUX11_IEEE_INTERFACE
#undef HAVE_HPUX_IEEE_INTERFACE
#undef HAVE_TRU64_IEEE_INTERFACE
#undef HAVE_IRIX_IEEE_INTERFACE
#undef HAVE_AIX_IEEE_INTERFACE
#undef HAVE_FREEBSD_IEEE_INTERFACE
#undef HAVE_OS2EMX_IEEE_INTERFACE
#undef HAVE_NETBSD_IEEE_INTERFACE
#undef HAVE_OPENBSD_IEEE_INTERFACE
#undef HAVE_DARWIN_IEEE_INTERFACE
#undef HAVE_DARWIN86_IEEE_INTERFACE])

AH_BOTTOM([/* Define a rounding function which moves extended precision values
   out of registers and rounds them to double-precision. This should
   be used *sparingly*, in places where it is necessary to keep
   double-precision rounding for critical expressions while running in
   extended precision. For example, the following code should ensure
   exact equality, even when extended precision registers are in use,

      double q = GSL_COERCE_DBL(3.0/7.0) ;
      if (q == GSL_COERCE_DBL(3.0/7.0)) { ... } ;

   It carries a penalty even when the program is running in double
   precision mode unless you compile a separate version of the
   library with HAVE_EXTENDED_PRECISION_REGISTERS turned off. */

#if HAVE_EXTENDED_PRECISION_REGISTERS
#define GSL_COERCE_DBL(x) (gsl_coerce_double(x))
#else
#define GSL_COERCE_DBL(x) (x)
#endif])

AH_BOTTOM([/* Substitute gsl functions for missing system functions */

#if !HAVE_DECL_HYPOT
#define hypot gsl_hypot
#endif

#if !HAVE_DECL_LOG1P
#define log1p gsl_log1p
#endif

#if !HAVE_DECL_EXPM1
#define expm1 gsl_expm1
#endif

#if !HAVE_DECL_ACOSH
#define acosh gsl_acosh
#endif

#if !HAVE_DECL_ASINH
#define asinh gsl_asinh
#endif

#if !HAVE_DECL_ATANH
#define atanh gsl_atanh
#endif

#if !HAVE_DECL_LDEXP
#define ldexp gsl_ldexp
#endif

#if !HAVE_DECL_FREXP
#define frexp gsl_frexp
#endif

#if !HAVE_DECL_ISINF
#define isinf gsl_isinf
#endif

#if !HAVE_DECL_FINITE
#define finite gsl_finite
#endif

#if !HAVE_DECL_ISNAN
#define isnan gsl_isnan
#endif])

AH_BOTTOM([#ifdef __GNUC__
#define DISCARD_POINTER(p) do { ; } while(p ? 0 : 0);
#else
#define DISCARD_POINTER(p) /* ignoring discarded pointer */
#endif])

AH_BOTTOM([#if defined(GSL_RANGE_CHECK_OFF) || !defined(GSL_RANGE_CHECK)
#define GSL_RANGE_CHECK 0  /* turn off range checking by default internally */
#endif])

AH_BOTTOM([#define RETURN_IF_NULL(x) if (!x) { return ; }
])

AH_VERBATIM([GSL_DISABLE_DEPRECATED],
[/* Disable deprecated functions and enums while building */
#define GSL_DISABLE_DEPRECATED 1])

dnl
AC_CONFIG_FILES([gsl_version.h gsl.spec gsl/Makefile test/Makefile err/Makefile sys/Makefile utils/Makefile const/Makefile min/Makefile multimin/Makefile ieee-utils/Makefile fft/Makefile specfunc/Makefile dht/Makefile fit/Makefile multifit/Makefile bspline/Makefile statistics/Makefile sum/Makefile roots/Makefile multiroots/Makefile ntuple/Makefile poly/Makefile qrng/Makefile rng/Makefile randist/Makefile siman/Makefile integration/Makefile interpolation/Makefile doc/Makefile block/Makefile vector/Makefile matrix/Makefile histogram/Makefile monte/Makefile ode-initval/Makefile cblas/Makefile blas/Makefile linalg/Makefile eigen/Makefile permutation/Makefile combination/Makefile multiset/Makefile sort/Makefile complex/Makefile diff/Makefile deriv/Makefile cheb/Makefile cdf/Makefile wavelet/Makefile Makefile])
AC_OUTPUT
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