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# GSL_CHECK_LIBS
#---------------
# Checks for the GSL libraries and header files.
AC_DEFUN([GSL_CHECK_LIBS],
[
AC_MSG_CHECKING([for GSL])
gsl_check_gsl_lib="-lgsl -lgslcblas"
gsl_includes=""
gsl_ldflags=""
AC_ARG_WITH(gsl,
AS_HELP_STRING([--with-gsl],
[location where GSL is installed]),
[
gsl_with_gsl_includes=$withval/include
# opensuse defaults also non systems installations to lib64 ...
gsl_with_gsl_libs="-L$withval/lib -L$withval/lib64 -L$withval/lib32"
])
AC_ARG_WITH(gsl-includes,
AS_HELP_STRING([--with-gsl-includes],
[location of the GSL header files]),
gsl_with_gsl_includes=$withval)
AC_ARG_WITH(gsl-libs,
AS_HELP_STRING([--with-gsl-libs],
[location of the GSL library]),
gsl_with_gsl_libs=-L$withval)
AC_ARG_ENABLE(gsl-test,
AS_HELP_STRING([--disable-gsl-test],
[disables checks for the GSL library and headers]),
gsl_enable_gsl_test=$enableval,
gsl_enable_gsl_test=yes)
if test "x$gsl_enable_gsl_test" = xyes; then
AC_MSG_CHECKING(checking for gsl)
save_LDFLAGS="$LDFLAGS"
save_LIBS="$LIBS"
save_CFLAGS="$CFLAGS"
if test -n "$gsl_with_gsl_libs"; then
LDFLAGS="$gsl_with_gsl_libs"
elif test -n "$GSLDIR"; then
LDFLAGS="-L$GSLDIR/lib -L$GSLDIR/lib64 -L$GSLDIR/lib32"
fi
if test -n "$gsl_with_gsl_includes"; then
CFLAGS="-I$gsl_with_gsl_includes"
elif test -n "$GSLDIR"; then
CFLAGS="-I$GSLDIR/include"
fi
LIBS=$gsl_check_gsl_lib
AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <gsl/gsl_sf_bessel.h>]], [[gsl_sf_bessel_J0(5.);]])],[
AC_MSG_RESULT(yes)
gsl_includes=$CFLAGS
gsl_ldflags=$LDFLAGS
],[
AC_MSG_ERROR([GSL not found])
])
# Set up the symbols
AC_DEFINE_UNQUOTED(HAVE_GSL, 1, [Define to 1 iff you have GSL])
GSL_INCLUDES="$gsl_includes"
GSL_LDFLAGS="$gsl_ldflags"
GSL_LIBS="$gsl_check_gsl_lib"
LDFLAGS="$save_LDFLAGS"
LIBS="$save_LIBS"
CFLAGS="$save_CFLAGS"
else
AC_MSG_RESULT([disabled])
AC_MSG_WARN([GSL checks have been disabled! This package may not build!])
GSL_INCLUDES=""
GSL_LDFLAGS=""
GSL_LIBS=""
fi
AC_SUBST(GSL_INCLUDES)
AC_SUBST(GSL_LDFLAGS)
AC_SUBST(GSL_LIBS)
])
|
