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# LIB_CHECK_GSL
#------------------
# Checks for the gsl library and header files.
AC_DEFUN([CPL_CHECK_GSL],
[
AC_MSG_CHECKING([for gsl])
AC_ARG_WITH(gsl,
AC_HELP_STRING([--with-gsl],
[location where gsl is installed]),
[
cpl_gsl_dir=$withval
])
export PKG_CONFIG_PATH="$cpl_gsl_dir/lib/pkgconfig:$cpl_gsl_dir/lib64/pkgconfig:$GSLDIR/lib/pkgconfig/:$GSLDIR/lib64/pkgconfig/:$PKG_CONFIG_PATH"
AC_SUBST(PKG_CONFIG_PATH)
PKG_CHECK_MODULES([GSL], [gsl],
AC_DEFINE([HAVE_LIBGSL], [1], [1 if GSL present]),
AC_MSG_ERROR([No GSL available]))
])
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