How can I link a project with boost which relies on another library that uses boost

Question

I'm trying to link my project against boost and another library that uses boost but haven't had success after hours spent tweaking my Makefile.

Myproject and dep1.a need boost to compile but I can't get to link with them.

The error I get is:

Parser.o): In function `boost::re_detail_107200::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::string>, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::string> > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::perl_matcher(__gnu_cxx::__normal_iterator<char const*, std::string>, __gnu_cxx::__normal_iterator<char const*, std::string>, boost::match_results<__gnu_cxx::__normal_iterator<char const*, std::string>, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::string> > > >&, boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > > const&, boost::regex_constants::_match_flags, __gnu_cxx::__normal_iterator<char const*, std::string>)':

/deps/boost_1_72_0/boost/regex/v4/perl_matcher.hpp:391: undefined reference to `boost::re_detail_107200::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::string>, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::string> > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::construct_init(boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > > const&, boost::regex_constants::_match_flags)'

I need libboost_regex, libboost_system, and libboost_date_time.

Here is the Makefile code:

CC := g++

BASE_DIR := ../../../code/MyProject/

CC_FLAGS := -g -std=c++0x -I$(BASE_DIR)../dep1/include -I$(BASE_DIR)include
LD_FLAGS := -lrt -lpthread -L../../../../../deps/boost_1_72_0/stage/libboost_regex.a -L../../../../../deps/boost_1_72_0/stage/libboost_system.a -L../../../../../deps/boost_1_72_0/stage/libboost_date_time.a

CPP_FILES := $(wildcard $(BASE_DIR)src/*.cpp)
OBJ_FILES := $(addprefix obj/,$(notdir $(CPP_FILES:.cpp=.o)))

STATIC_DEP := ../dep1/lib/dep1.a


bin/MyProject: $(OBJ_FILES) $(STATIC_DEP)
    @mkdir -p $(@D)
    $(CC) -o $@ $^ $(STATIC_DEP) $(LD_FLAGS)

obj/%.o: $(BASE_DIR)src/%.cpp
    @mkdir -p $(@D)
    $(CC) $(CC_FLAGS) -c -o $@ $^

../dep1/lib/dep1.a:
    $(MAKE) -C ../dep1
clean:
    rm -rf ./obj
    rm -rf ./bin
'''

Sorry i forgot about the error. i edited the post and included the error — vermissa0ss, Aug 26 '21 at 21:43
I'm guessing that whatever `Parser.o` is, it isn't compiled with the libstdc++ c++11 abi but your boost libraries are https://stackoverflow.com/a/32500124/5494370 — Alan Birtles, Aug 26 '21 at 22:30
Are you perhaps confusing the -l for library vs the -L for load path ? Also, check to see if the names and paths for the lib files are exactly right. — kalyanswaroop, Aug 26 '21 at 22:33

How can I link a project with boost which relies on another library that uses boost

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