Suppress error from the compiler run during libboost-python* detection

diff --git a/Makefile b/Makefile
index c6c56b604c642ddf433243e71fc59e13377b52ff..993cbb7e5437d44b29dd55a0929d75820246522d 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -273,10 +273,10 @@ ifeq ($(ENABLE_PYOSYS),1)
 
 #Detect name of boost_python library. Some distros usbe boost_python-py<version>, other boost_python<version>, some only use the major version number, some a concatenation of major and minor version numbers
 BOOST_PYTHON_LIB ?= $(shell \
-       if echo "int main(int argc, char ** argv) {return 0;}" | $(CXX) -xc -o /dev/null `$(PYTHON_EXECUTABLE)-config --libs` -lboost_python-py$(subst .,,$(PYTHON_VERSION)) -;        then echo "-lboost_python-py$(subst .,,$(PYTHON_VERSION))";       else \
-       if echo "int main(int argc, char ** argv) {return 0;}" | $(CXX) -xc -o /dev/null `$(PYTHON_EXECUTABLE)-config --libs` -lboost_python-py$(subst .,,$(PYTHON_MAJOR_VERSION)) -;  then echo "-lboost_python-py$(subst .,,$(PYTHON_MAJOR_VERSION))"; else \
-       if echo "int main(int argc, char ** argv) {return 0;}" | $(CXX) -xc -o /dev/null `$(PYTHON_EXECUTABLE)-config --libs` -lboost_python$(subst .,,$(PYTHON_VERSION)) -;           then echo "-lboost_python$(subst .,,$(PYTHON_VERSION))";          else \
-       if echo "int main(int argc, char ** argv) {return 0;}" | $(CXX) -xc -o /dev/null `$(PYTHON_EXECUTABLE)-config --libs` -lboost_python$(subst .,,$(PYTHON_MAJOR_VERSION)) -;     then echo "-lboost_python$(subst .,,$(PYTHON_MAJOR_VERSION))";    else \
+       if echo "int main(int argc, char ** argv) {return 0;}" | $(CXX) -xc -o /dev/null `$(PYTHON_EXECUTABLE)-config --libs` -lboost_python-py$(subst .,,$(PYTHON_VERSION)) - > /dev/null 2>&1;        then echo "-lboost_python-py$(subst .,,$(PYTHON_VERSION))";       else \
+       if echo "int main(int argc, char ** argv) {return 0;}" | $(CXX) -xc -o /dev/null `$(PYTHON_EXECUTABLE)-config --libs` -lboost_python-py$(subst .,,$(PYTHON_MAJOR_VERSION)) - > /dev/null 2>&1;  then echo "-lboost_python-py$(subst .,,$(PYTHON_MAJOR_VERSION))"; else \
+       if echo "int main(int argc, char ** argv) {return 0;}" | $(CXX) -xc -o /dev/null `$(PYTHON_EXECUTABLE)-config --libs` -lboost_python$(subst .,,$(PYTHON_VERSION)) - > /dev/null 2>&1;           then echo "-lboost_python$(subst .,,$(PYTHON_VERSION))";          else \
+       if echo "int main(int argc, char ** argv) {return 0;}" | $(CXX) -xc -o /dev/null `$(PYTHON_EXECUTABLE)-config --libs` -lboost_python$(subst .,,$(PYTHON_MAJOR_VERSION)) - > /dev/null 2>&1;     then echo "-lboost_python$(subst .,,$(PYTHON_MAJOR_VERSION))";    else \
                                                                                                                                                                                         echo ""; fi; fi; fi; fi;)
 
 ifeq ($(BOOST_PYTHON_LIB),)