c++11 - CFLAGS are ignored in Makefile -

c++11 - CFLAGS are ignored in Makefile -

i using next makefile build project:

cc = /usr/bin/g++ cflags = -wall -pedantic -std=c++0x ldflags = obj = main.o pnmhandler.o pixmap.o color.o pnm: $(obj) $(cc) $(cflags) -o pnm $(obj) $(ldflags) %.o: %.cpp $(cc) $(cflags) -c $<

as run create next error:

/usr/include/c++/4.9.1/bits/c++0x_warning.h:32:2: error: #error file requires compiler , library back upwards iso c++ 2011 standard. back upwards experimental, , must enabled -std=c++11 or -std=gnu++11 compiler options.

as can read next line, cflags not included, have no thought doing wrong:

g++ -c -o main.o main.cpp

also tried -std=c++11 , -std=gnu++11, without results. ideas?

if run make -bn, get:

g++ -c -o main.o main.cpp g++ -c -o pnmhandler.o pnmhandler.cpp g++ -c -o pixmap.o pixmap.cpp g++ -c -o color.o color.cpp /usr/bin/g++ -wall -pedantic -std=c++0x -o pnm main.o pnmhandler.o pixmap.o color.o

c++11 makefile