path: root/octave-gnulib-fixes.diff

diff -ru octave-4.0.3.orig/libgnu/Makefile.in octave-4.0.3/libgnu/Makefile.in
--- octave-4.0.3.orig/libgnu/Makefile.in	2016-07-01 20:44:48.000000000 +0200
+++ octave-4.0.3/libgnu/Makefile.in	2018-03-01 11:26:53.437030700 +0100
@@ -932,7 +932,7 @@
 HAVE_DECL_GETPAGESIZE = @HAVE_DECL_GETPAGESIZE@
 HAVE_DECL_GETUSERSHELL = @HAVE_DECL_GETUSERSHELL@
 HAVE_DECL_LDEXPL = @HAVE_DECL_LDEXPL@
-HAVE_DECL_LOCALTIME_R = @HAVE_DECL_LOCALTIME_R@
+HAVE_DECL_LOCALTIME_R = 1
 HAVE_DECL_LOG10L = @HAVE_DECL_LOG10L@
 HAVE_DECL_LOG2 = @HAVE_DECL_LOG2@
 HAVE_DECL_LOG2F = @HAVE_DECL_LOG2F@
diff -ru octave-4.0.3.orig/libgnu/mktime.c octave-4.0.3/libgnu/mktime.c
--- octave-4.0.3.orig/libgnu/mktime.c	2016-07-01 20:43:44.000000000 +0200
+++ octave-4.0.3/libgnu/mktime.c	2018-03-01 08:51:30.571844300 +0100
@@ -34,6 +34,7 @@
 # define LEAP_SECONDS_POSSIBLE 1
 #endif
 
+#define _POSIX_C_SOURCE 1
 #include <time.h>
 
 #include <limits.h>
diff -ru octave-4.0.3.orig/libgnu/strptime.c octave-4.0.3/libgnu/strptime.c
--- octave-4.0.3.orig/libgnu/strptime.c	2016-07-01 20:43:45.000000000 +0200
+++ octave-4.0.3/libgnu/strptime.c	2018-03-01 08:53:08.758545200 +0100
@@ -19,6 +19,7 @@
 # include <config.h>
 #endif
 
+#define _POSIX_C_SOURCE 1
 #include <time.h>
 
 #include <assert.h>
diff -ru octave-4.0.3.orig/libgnu/time.in.h octave-4.0.3/libgnu/time.in.h
--- octave-4.0.3.orig/libgnu/time.in.h	2016-07-01 20:43:45.000000000 +0200
+++ octave-4.0.3/libgnu/time.in.h	2018-03-01 09:27:49.362764000 +0100
@@ -31,12 +31,14 @@
       && !defined __MINGW32__)                         \
      || defined _@GUARD_PREFIX@_TIME_H)
 
+#define _POSIX_C_SOURCE 1
 # @INCLUDE_NEXT@ @NEXT_TIME_H@
 
 #else
 
 # define _@GUARD_PREFIX@_TIME_H
 
+#define _POSIX_C_SOURCE 1
 # @INCLUDE_NEXT@ @NEXT_TIME_H@
 
 /* NetBSD 5.0 mis-defines NULL.  */
diff -ru octave-4.0.3.orig/libgnu/time_rz.c octave-4.0.3/libgnu/time_rz.c
--- octave-4.0.3.orig/libgnu/time_rz.c	2016-07-01 20:43:42.000000000 +0200
+++ octave-4.0.3/libgnu/time_rz.c	2018-03-01 08:53:45.508591900 +0100
@@ -24,6 +24,7 @@
 
 #include <config.h>
 
+#define _POSIX_C_SOURCE 1
 #include <time.h>
 
 #include <errno.h>
diff -ru octave-4.0.3.orig/libgnu/timegm.c octave-4.0.3/libgnu/timegm.c
--- octave-4.0.3.orig/libgnu/timegm.c	2016-07-01 20:43:42.000000000 +0200
+++ octave-4.0.3/libgnu/timegm.c	2018-03-01 08:54:31.977398700 +0100
@@ -20,6 +20,7 @@
 # include <config.h>
 #endif
 
+#define _POSIX_C_SOURCE 1
 #include <time.h>
 
 #ifdef _LIBC
diff -ru octave-4.0.3.orig/libinterp/corefcn/data.cc octave-4.0.3/libinterp/corefcn/data.cc
--- octave-4.0.3.orig/libinterp/corefcn/data.cc	2016-07-01 20:40:27.000000000 +0200
+++ octave-4.0.3/libinterp/corefcn/data.cc	2018-03-01 08:13:34.078298700 +0100
@@ -4718,7 +4718,7 @@
                   else
                     {
                       int expon;
-                      gnulib::frexpf (val, &expon);
+                      frexpf (val, &expon);
                       epsval(i) = std::pow (2.0f,
                                             static_cast<float> (expon - 24));
                     }
@@ -4744,7 +4744,7 @@
                   else
                     {
                       int expon;
-                      gnulib::frexp (val, &expon);
+                      frexp (val, &expon);
                       epsval(i) = std::pow (2.0,
                                             static_cast<double> (expon - 53));
                     }
diff -ru octave-4.0.3.orig/libinterp/corefcn/gcd.cc octave-4.0.3/libinterp/corefcn/gcd.cc
--- octave-4.0.3.orig/libinterp/corefcn/gcd.cc	2016-04-20 20:23:57.000000000 +0200
+++ octave-4.0.3/libinterp/corefcn/gcd.cc	2018-03-01 08:13:34.092947000 +0100
@@ -64,8 +64,8 @@
 divide (const std::complex<FP>& a, const std::complex<FP>& b,
         std::complex<FP>& q, std::complex<FP>& r)
 {
-  FP qr = gnulib::floor ((a/b).real () + 0.5);
-  FP qi = gnulib::floor ((a/b).imag () + 0.5);
+  FP qr = floor ((a/b).real () + 0.5);
+  FP qi = floor ((a/b).imag () + 0.5);
 
   q = std::complex<FP> (qr, qi);
 
@@ -131,7 +131,7 @@
 
   while (bb != 0)
     {
-      double qq = gnulib::floor (aa / bb);
+      double qq = floor (aa / bb);
       double tt = fmod (aa, bb);
 
       aa = bb;
diff -ru octave-4.0.3.orig/libinterp/corefcn/graphics.cc octave-4.0.3/libinterp/corefcn/graphics.cc
--- octave-4.0.3.orig/libinterp/corefcn/graphics.cc	2016-04-20 20:23:57.000000000 +0200
+++ octave-4.0.3/libinterp/corefcn/graphics.cc	2018-03-01 08:13:34.124344800 +0100
@@ -6876,7 +6876,7 @@
     }
   else
     {
-      b = static_cast<int> (gnulib::floor (std::log10 (std::abs (x))));
+      b = static_cast<int> (floor (std::log10 (std::abs (x))));
       a = x / std::pow (10.0, b);
     }
 }
@@ -6974,14 +6974,14 @@
           if (min_val > 0)
             {
               // Log plots with all positive data
-              min_val = pow (10, gnulib::floor (log10 (min_val)));
+              min_val = pow (10, floor (log10 (min_val)));
               max_val = pow (10, std::ceil (log10 (max_val)));
             }
           else
             {
               // Log plots with all negative data
               min_val = -pow (10, std::ceil (log10 (-min_val)));
-              max_val = -pow (10, gnulib::floor (log10 (-max_val)));
+              max_val = -pow (10, floor (log10 (-max_val)));
             }
         }
       else
@@ -7000,7 +7000,7 @@
             }
 
           double tick_sep = calc_tick_sep (min_val , max_val);
-          double min_tick = gnulib::floor (min_val / tick_sep);
+          double min_tick = floor (min_val / tick_sep);
           double max_tick = std::ceil (max_val / tick_sep);
           // Prevent round-off from cropping ticks
           min_val = std::min (min_val, tick_sep * min_tick);
@@ -7062,7 +7062,7 @@
   else
     tick_sep = calc_tick_sep (lo , hi);
 
-  int i1 = static_cast<int> (gnulib::floor (lo / tick_sep));
+  int i1 = static_cast<int> (floor (lo / tick_sep));
   int i2 = static_cast<int> (std::ceil (hi / tick_sep));
 
   if (limmode_is_auto)
@@ -7143,9 +7143,9 @@
       for (int i = 0; i < values.numel (); i++)
         {
           if (values(i) < 0.)
-            exponent = gnulib::floor (std::log10 (-values(i)));
+            exponent = floor (std::log10 (-values(i)));
           else
-            exponent = gnulib::floor (std::log10 (values(i)));
+            exponent = floor (std::log10 (values(i)));
           significand = values(i) * std::pow (10., -exponent);
           os.str (std::string ());
           os << significand;
diff -ru octave-4.0.3.orig/libinterp/corefcn/pr-output.cc octave-4.0.3/libinterp/corefcn/pr-output.cc
--- octave-4.0.3.orig/libinterp/corefcn/pr-output.cc	2016-04-20 20:23:56.000000000 +0200
+++ octave-4.0.3/libinterp/corefcn/pr-output.cc	2018-03-01 08:13:34.139958300 +0100
@@ -238,7 +238,7 @@
   if (x != 0)
     {
       double absval = (x < 0.0 ? -x : x);
-      int logabsval = static_cast<int> (gnulib::floor (log10 (absval)));
+      int logabsval = static_cast<int> (floor (log10 (absval)));
       /* Avoid using modulo function with negative arguments for portability.
        * See extended comment at calc_scale_exp */
       if (logabsval < 0.0)
@@ -254,7 +254,7 @@
 {
   return 1 + (print_eng
               ? engineering_exponent (x)
-              : static_cast<int> (gnulib::floor (log10 (x))));
+              : static_cast<int> (floor (log10 (x))));
 }
 
 class
@@ -3258,7 +3258,7 @@
             {
               int new_digits
                 = static_cast<int>
-                  (gnulib::floor (log10 (double (abs (nda(i).value ()))) + 1.0));
+                  (floor (log10 (double (abs (nda(i).value ()))) + 1.0));
 
               if (new_digits > digits)
                 digits = new_digits;
diff -ru octave-4.0.3.orig/libinterp/corefcn/quadcc.cc octave-4.0.3/libinterp/corefcn/quadcc.cc
--- octave-4.0.3.orig/libinterp/corefcn/quadcc.cc	2016-04-20 20:23:56.000000000 +0200
+++ octave-4.0.3/libinterp/corefcn/quadcc.cc	2018-03-01 08:13:34.155680300 +0100
@@ -1673,7 +1673,7 @@
       wrap = true;
       for (i = 0; i < nivals + 1; i++)
         if (xisinf (iivals[i]))
-          iivals[i] = gnulib::copysign (1.0, iivals[i]);
+          iivals[i] = copysign (1.0, iivals[i]);
         else
           iivals[i] = 2.0 * atan (iivals[i]) / M_PI;
     }
@@ -2037,7 +2037,7 @@
                                   && ivl->c[0] / iv->c[0] > 2);
           if (ivl->ndiv > ndiv_max && 2 * ivl->ndiv > ivl->rdepth)
             {
-              igral = gnulib::copysign (octave_Inf, igral);
+              igral = copysign (octave_Inf, igral);
               warning ("quadcc: divergent integral detected");
               break;
             }
@@ -2133,7 +2133,7 @@
                                   && ivr->c[0] / iv->c[0] > 2);
           if (ivr->ndiv > ndiv_max && 2 * ivr->ndiv > ivr->rdepth)
             {
-              igral = gnulib::copysign (octave_Inf, igral);
+              igral = copysign (octave_Inf, igral);
               warning ("quadcc: divergent integral detected");
               break;
             }
diff -ru octave-4.0.3.orig/libinterp/corefcn/rand.cc octave-4.0.3/libinterp/corefcn/rand.cc
--- octave-4.0.3.orig/libinterp/corefcn/rand.cc	2016-04-20 20:23:56.000000000 +0200
+++ octave-4.0.3/libinterp/corefcn/rand.cc	2018-03-01 08:13:34.186606100 +0100
@@ -1205,7 +1205,7 @@
               for (octave_idx_type i = 0; i < m; i++)
                 {
                   octave_idx_type k = i +
-                                      gnulib::floor (rvec[i] * (n - i));
+                                      floor (rvec[i] * (n - i));
 
                   //For shuffling first m entries, no need to use extra
                   //storage
@@ -1229,7 +1229,7 @@
               for (octave_idx_type i = 0; i < m; i++)
                 {
                   octave_idx_type k = i +
-                                      gnulib::floor (rvec[i] * (n - i));
+                                      floor (rvec[i] * (n - i));
                   std::swap (ivec[i], ivec[k]);
                 }
             }
diff -ru octave-4.0.3.orig/libinterp/octave-value/ov-cell.cc octave-4.0.3/libinterp/octave-value/ov-cell.cc
--- octave-4.0.3.orig/libinterp/octave-value/ov-cell.cc	2016-04-20 20:23:57.000000000 +0200
+++ octave-4.0.3/libinterp/octave-value/ov-cell.cc	2018-03-01 08:13:34.202242900 +0100
@@ -1141,7 +1141,7 @@
   for (octave_idx_type i = 0; i < nel; i++)
     {
       std::ostringstream buf;
-      int digits = static_cast<int> (gnulib::floor (::log10 (static_cast<double>
+      int digits = static_cast<int> (floor (::log10 (static_cast<double>
                                      (nel)) + 1.0));
       buf << "_" << std::setw (digits) << std::setfill ('0') << i;
       std::string s = buf.str ();
diff -ru octave-4.0.3.orig/libinterp/octave-value/ov-float.cc octave-4.0.3/libinterp/octave-value/ov-float.cc
--- octave-4.0.3.orig/libinterp/octave-value/ov-float.cc	2016-04-20 20:23:57.000000000 +0200
+++ octave-4.0.3/libinterp/octave-value/ov-float.cc	2018-03-01 08:13:34.218031200 +0100
@@ -318,7 +318,7 @@
       SCALAR_MAPPER (exp, ::expf);
       SCALAR_MAPPER (expm1, ::expm1f);
       SCALAR_MAPPER (fix, ::fix);
-      SCALAR_MAPPER (floor, gnulib::floorf);
+      SCALAR_MAPPER (floor, floorf);
       SCALAR_MAPPER (log, rc_log);
       SCALAR_MAPPER (log2, rc_log2);
       SCALAR_MAPPER (log10, rc_log10);
diff -ru octave-4.0.3.orig/libinterp/octave-value/ov-scalar.cc octave-4.0.3/libinterp/octave-value/ov-scalar.cc
--- octave-4.0.3.orig/libinterp/octave-value/ov-scalar.cc	2016-04-20 20:23:57.000000000 +0200
+++ octave-4.0.3/libinterp/octave-value/ov-scalar.cc	2018-03-01 08:13:34.233708600 +0100
@@ -340,7 +340,7 @@
       SCALAR_MAPPER (exp, ::exp);
       SCALAR_MAPPER (expm1, ::expm1);
       SCALAR_MAPPER (fix, ::fix);
-      SCALAR_MAPPER (floor, gnulib::floor);
+      SCALAR_MAPPER (floor, floor);
       SCALAR_MAPPER (log, rc_log);
       SCALAR_MAPPER (log2, rc_log2);
       SCALAR_MAPPER (log10, rc_log10);
diff -ru octave-4.0.3.orig/liboctave/array/Range.cc octave-4.0.3/liboctave/array/Range.cc
--- octave-4.0.3.orig/liboctave/array/Range.cc	2016-04-20 20:23:56.000000000 +0200
+++ octave-4.0.3/liboctave/array/Range.cc	2018-03-01 08:13:34.249575500 +0100
@@ -495,11 +495,11 @@
 
   double rmax = q / (2.0 - ct);
 
-  double t1 = 1.0 + gnulib::floor (x);
+  double t1 = 1.0 + floor (x);
   t1 = (ct / q) * (t1 < 0.0 ? -t1 : t1);
   t1 = rmax < t1 ? rmax : t1;
   t1 = ct > t1 ? ct : t1;
-  t1 = gnulib::floor (x + t1);
+  t1 = floor (x + t1);
 
   if (x <= 0.0 || (t1 - x) < rmax)
     return t1;
diff -ru octave-4.0.3.orig/liboctave/cruft/Faddeeva/Faddeeva.cc octave-4.0.3/liboctave/cruft/Faddeeva/Faddeeva.cc
--- octave-4.0.3.orig/liboctave/cruft/Faddeeva/Faddeeva.cc	2016-04-20 20:23:56.000000000 +0200
+++ octave-4.0.3/liboctave/cruft/Faddeeva/Faddeeva.cc	2018-03-01 08:13:34.265323200 +0100
@@ -210,8 +210,8 @@
 // has to do with floor(-0), which doesn't occur in the usage below, but
 // the Octave developers prefer that we silence the warning.
 #  ifdef GNULIB_NAMESPACE
-#    define floor GNULIB_NAMESPACE::floor
-#    define log GNULIB_NAMESPACE::log
+#    define floor ::floor
+#    define log ::log
 #  endif
 
 #else // !__cplusplus, i.e. pure C (requires C99 features)
diff -ru octave-4.0.3.orig/liboctave/numeric/lo-mappers.cc octave-4.0.3/liboctave/numeric/lo-mappers.cc
--- octave-4.0.3.orig/liboctave/numeric/lo-mappers.cc	2016-04-20 20:23:57.000000000 +0200
+++ octave-4.0.3/liboctave/numeric/lo-mappers.cc	2018-03-01 08:13:34.280819400 +0100
@@ -45,24 +45,24 @@
 double
 xtrunc (double x)
 {
-  return gnulib::trunc (x);
+  return trunc (x);
 }
 
 double
 xcopysign (double x, double y)
 {
-  return gnulib::copysign (x, y);
+  return copysign (x, y);
 }
 
 double xfloor (double x)
 {
-  return gnulib::floor (x);
+  return floor (x);
 }
 
 double
 xround (double x)
 {
-  return gnulib::round (x);
+  return round (x);
 }
 
 double
@@ -92,7 +92,7 @@
 double
 xlog2 (double x)
 {
-  return gnulib::log2 (x);
+  return log2 (x);
 }
 
 Complex
@@ -101,7 +101,7 @@
 #if defined (M_LN2)
   static double ln2 = M_LN2;
 #else
-  static double ln2 = gnulib::log (2);
+  static double ln2 = log (2);
 #endif
 
   return std::log (x) / ln2;
@@ -116,7 +116,7 @@
 #if defined (M_LN2)
   static double ln2 = M_LN2;
 #else
-  static double ln2 = gnulib::log (2);
+  static double ln2 = log (2);
 #endif
 
   return exp (x * ln2);
@@ -126,7 +126,7 @@
 double
 xlog2 (double x, int& exp)
 {
-  return gnulib::frexp (x, &exp);
+  return frexp (x, &exp);
 }
 
 Complex
@@ -280,24 +280,24 @@
 float
 xtrunc (float x)
 {
-  return gnulib::truncf (x);
+  return truncf (x);
 }
 
 float
 xcopysign (float x, float y)
 {
-  return gnulib::copysignf (x, y);
+  return copysignf (x, y);
 }
 
 float xfloor (float x)
 {
-  return gnulib::floorf (x);
+  return floorf (x);
 }
 
 float
 xround (float x)
 {
-  return gnulib::roundf (x);
+  return roundf (x);
 }
 
 float
@@ -327,7 +327,7 @@
 float
 xlog2 (float x)
 {
-  return gnulib::log2f (x);
+  return log2f (x);
 }
 
 FloatComplex
@@ -363,7 +363,7 @@
 float
 xlog2 (float x, int& exp)
 {
-  return gnulib::frexpf (x, &exp);
+  return frexpf (x, &exp);
 }
 
 FloatComplex
@@ -561,7 +561,7 @@
 rc_log (double x)
 {
   const double pi = 3.14159265358979323846;
-  return x < 0.0 ? Complex (gnulib::log (-x), pi) : Complex (gnulib::log (x));
+  return x < 0.0 ? Complex (log (-x), pi) : Complex (log (x));
 }
 
 FloatComplex
@@ -569,8 +569,8 @@
 {
   const float pi = 3.14159265358979323846f;
   return (x < 0.0f
-          ? FloatComplex (gnulib::logf (-x), pi)
-          : FloatComplex (gnulib::logf (x)));
+          ? FloatComplex (logf (-x), pi)
+          : FloatComplex (logf (x)));
 }
 
 Complex
diff -ru octave-4.0.3.orig/liboctave/numeric/lo-mappers.h octave-4.0.3/liboctave/numeric/lo-mappers.h
--- octave-4.0.3.orig/liboctave/numeric/lo-mappers.h	2016-04-20 20:23:57.000000000 +0200
+++ octave-4.0.3/liboctave/numeric/lo-mappers.h	2018-03-01 08:13:34.296672500 +0100
@@ -377,7 +377,7 @@
 T
 xsignbit (T x)
 {
-  return signbit (x);
+  return std::signbit (x);
 }
 
 #endif
diff -ru octave-4.0.3.orig/liboctave/numeric/lo-specfun.cc octave-4.0.3/liboctave/numeric/lo-specfun.cc
--- octave-4.0.3.orig/liboctave/numeric/lo-specfun.cc	2016-04-20 20:23:57.000000000 +0200
+++ octave-4.0.3/liboctave/numeric/lo-specfun.cc	2018-03-01 08:13:34.312276100 +0100
@@ -633,7 +633,7 @@
       retval = 2 * (s + 1) * u;
     }
   else
-    retval = gnulib::log (1 + x);
+    retval = log (1 + x);
 
   return retval;
 }
@@ -692,7 +692,7 @@
       retval = 2 * (s + 1.0f) * u;
     }
   else
-    retval = gnulib::logf (1.0f + x);
+    retval = logf (1.0f + x);
 
   return retval;
 }
@@ -2978,7 +2978,7 @@
 {
   const double pi = 3.14159265358979323846;
   return (x < -1.0
-          ? Complex (gnulib::log (-(1.0 + x)), pi)
+          ? Complex (log (-(1.0 + x)), pi)
           : Complex (log1p (x)));
 }
 
@@ -2986,7 +2986,7 @@
 {
   const float pi = 3.14159265358979323846f;
   return (x < -1.0f
-          ? FloatComplex (gnulib::logf (-(1.0f + x)), pi)
+          ? FloatComplex (logf (-(1.0f + x)), pi)
           : FloatComplex (log1pf (x)));
 }
 
@@ -3040,7 +3040,7 @@
   else if (ax < 1.0)
     {
       // Tail region.
-      const double q = sqrt (-2*gnulib::log (0.5*(1-ax)));
+      const double q = sqrt (-2*log (0.5*(1-ax)));
       const double yn = ((((c[0]*q + c[1])*q + c[2])*q + c[3])*q + c[4])*q + c[5];
       const double yd = (((d[0]*q + d[1])*q + d[2])*q + d[3])*q + 1.0;
       y = yn / yd * signum (-x);
@@ -3119,8 +3119,8 @@
     {
       // Tail region.
       const double q = (x < 1
-                        ? sqrt (-2*gnulib::log (0.5*x))
-                        : sqrt (-2*gnulib::log (0.5*(2-x))));
+                        ? sqrt (-2*log (0.5*x))
+                        : sqrt (-2*log (0.5*(2-x))));
 
       const double yn = ((((c[0]*q + c[1])*q + c[2])*q + c[3])*q + c[4])*q + c[5];
 
@@ -3243,8 +3243,8 @@
 
       if (temp <= acu && temp <= acu * value)
         {
-          value = value * exp (pp * gnulib::log (xx)
-                               + (qq - 1.0) * gnulib::log (cx) - beta) / pp;
+          value = value * exp (pp * log (xx)
+                               + (qq - 1.0) * log (cx) - beta) / pp;
 
           if (indx)
             {
@@ -3342,7 +3342,7 @@
 
   //  Calculate the initial approximation.
 
-  r = sqrt (- gnulib::log (a * a));
+  r = sqrt (- log (a * a));
 
   ycur = r - (2.30753 + 0.27061 * r) / (1.0 + (0.99229 + 0.04481 * r) * r);
 
@@ -3363,7 +3363,7 @@
 
       if (t <= 0.0)
         {
-          value = 1.0 - exp ((gnulib::log ((1.0 - a) * qq) + beta) / qq);
+          value = 1.0 - exp ((log ((1.0 - a) * qq) + beta) / qq);
         }
       else
         {
@@ -3371,7 +3371,7 @@
 
           if (t <= 1.0)
             {
-              value = exp ((gnulib::log (a * pp) + beta) / pp);
+              value = exp ((log (a * pp) + beta) / pp);
             }
           else
             {
@@ -3413,8 +3413,8 @@
         }
 
       xin = value;
-      ycur = (ycur - a) * exp (beta + r * gnulib::log (xin)
-                               + t * gnulib::log (1.0 - xin));
+      ycur = (ycur - a) * exp (beta + r * log (xin)
+                               + t * log (1.0 - xin));
 
       if (ycur * yprev <= 0.0)
         {
diff -ru octave-4.0.3.orig/src/Makefile.in octave-4.0.3/src/Makefile.in
--- octave-4.0.3.orig/src/Makefile.in	2016-07-01 20:44:53.000000000 +0200
+++ octave-4.0.3/src/Makefile.in	2018-03-02 03:32:36.955223700 +0100
@@ -1334,7 +1334,7 @@
 # List of libraries and their special compilation flags
 LIBOCTINTERP = @LIBOCTINTERP@
 LIBPRE = @LIBPRE@
-LIBS = @LIBS@
+LIBS = @LIBS@ -lz
 LIBSOCKET = @LIBSOCKET@
 LIBTOOL = @LIBTOOL@
 LIB_CRYPTO = @LIB_CRYPTO@