CODEWITHSUNDEEP
c++makefile
liv2hak
liv2hak

Reputation: 15010

makefile not finding header file from -I include path

I have the makefile given below. When I do make I get the following error

cc  -c -o timing.o timing.c
test_c.c:5:17: fatal error: test.h: No such file or directory
 #include "test.h"

I have manually verfied that test.h is present in ../include path. I am not sure why this is not finding the header file.It would be great if someone could help.Also I would expect g++ instead of cc

# Makefile template for shared library

CXX = g++ # C++ compiler                                                                                                                                                                     
CXXFLAGS = -fPIC -Wall -Wextra -O2 -g -I../include #CXX flags
LDFLAGS = -lboost_system -shared  # linking flags

RM = rm -f  # rm command

TARGET_LIB = libtest.a # target lib


C_SRCS := test_a.c test_b.c 
CPP_SRCS := test_c.cpp test_d.cpp 
OBJS := $(C_SRCS:.c=.o) $(CPP_SRCS:.cpp=.o)

.PHONY: all 

all: ${TARGET_LIB}

$(TARGET_LIB): $(OBJS) 
    $(CXX) $(CXXFLAGS) ${LDFLAGS} -o $@ $^  


.PHONY: clean
clean:
    -${RM} ${TARGET_LIB} ${OBJS}

~

Upvotes: 0

Views: 2941

Answers (1)

Beta
Beta

Reputation: 99172

You have not written a rule for building timing.o from timing.c, so Make uses the default rule it has for that.

But that rule uses CFLAGS, not CXXFLAGS. The CXXFLAGS variable appears in the rule for building object files from C++ sources.

So modify CFLAGS instead of CXXFLAGS, and it should work.

Upvotes: 1

Related Questions