Include missing header <algorithm>

src/cdo_module.cc

 #include "cdo_module.h"
 #include "cdo_output.h"
 
+#include <algorithm>
+
 oper_t::oper_t() : help(default_help) {}
 
 oper_t::oper_t(const char *_name, int _f1, int _f2, const char *_enter)
@@ -14,10 +16,12 @@ oper_t::oper_t(const char *_name, int _f1, int _f2, const char *_enter, const Cd
     : name(_name), f1(_f1), f2(_f2), enter(_enter), help(p_help)
 {
 }
+
 oper_t::oper_t(const char *_name, int _f1, int _f2, const CdoHelp &p_help)
     : name(_name), f1(_f1), f2(_f2), enter(nullptr), help(p_help)
 {
 }
+
 oper_t::oper_t(const char *_name) : name(_name), help(default_help) {}
 
 oper_t::oper_t(const char *_name, const CdoHelp &p_help) : name(_name), enter(nullptr), help(p_help) {}
@@ -92,7 +96,6 @@ CdoModule::is_alias(const std::string &subject) const
 std::vector<oper_t>::const_iterator
 CdoModule::find_operator(const std::string &p_operatorName) const
 {
-
   auto res
       = std::find_if(begin(operators), end(operators), [&p_operatorName](const oper_t &o) { return o.name == p_operatorName; });
   return res;

src/cdo_options.cc

@@ -13,6 +13,7 @@
 #include "cdo_output.h"
 
 #include <cstring>
+#include <algorithm>
 
 namespace cdo
 {
@@ -75,6 +76,7 @@ bool cdoOverwriteMode = false;
 bool cdoParIO = false;
 bool cdoRegulargrid = false;
 std::vector<std::string> cdoVarnames;
+
 size_t
 cdo_num_varnames()
 {