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Top Forums Programming C++ linking library to a library Post 303006565 by arunkumar_mca on Friday 3rd of November 2017 12:38:05 PM
Old 11-03-2017
C++ linking library to a library

Hi All,

My application main engine will use a shared library where we do many operation. We are trying to implement the linear algebra operation on the shared library for that I need to link my shared library to the lapack library in /usr/lib.

Below is my make file. Can you please let me know where can I link the lblas lib to this make file
Code:
IP_INCLUDE=../iplib
MKLIB_INCLUDE=../lib



LIBNAME=shared
YESBANVER=$(YESBAN_PRODUCT_MAJ)$(YESBAN_PRODUCT_MIN)
YESBANBLD=$(YESBAN_PRODUCT_BUILD_VER)
ARMAD=/home/armadillo3.4.4/armadillo-3.4.4/include
LLPAT=/usr/lib64

INCLUDEDIR=-I$(YESBAN_RWPATH_64)  -I$(YESBAN_RWINCLUDECTPATH_64) -I$(YESBAN_RWINCLUDEPATH_64) \
        -I$(YESBAN_SYBINCLUDE_64) -I$(IMS_INCLUDE) -I$(PFLIB_INCLUDE) -I. -I$(ARMAD) -I$(LLPAT)


#---------------------------------------------------------------------
# ---- Constants definitions
#               OPT_CPP                 - C++ Compiler Options
#               OPT_C                   - C Compiler Options
# ---------------------------------------------------------------------


#CPPOPTS=-D_OS_LINUX -DHPaCC -DSYB_LP64 -D_THREAD_SAFE -D__HPACC_THREAD_SAFE_RB_TREE

CPPOPTS=

# C++ Compiler

OPT_CPP=$(YESBAN_CCOPT) $(_OPT_CPP) $(INCLUDEDIR) $(YESBAN_RW_OPTS) -D_FILE_OFFSET_BITS=64 -DARMA_DONT_USE_WRAPPER


# C Compiler
# ----------
OPT_C=$(YESBAN_COPT) $(_OPT_C) $(INCLUDEDIR) -D_FILE_OFFSET_BITS=64 -DARMA_DONT_USE_WRAPPER


.SUFFIXES: .cpp .o .c

all:clean
        make -f GNUmakefile_64 $(YESBAN_BIN_64)/lib$(LIBNAME).a

rel:
        make -f GNUmakefile_64 $(YESBAN_BIN_64)/lib$(LIBNAME).a

dbg:
        make -f GNUmakefile_64 $(YESBAN_BINDBG_64)/lib$(LIBNAME).a

$(YESBAN_BIN_64)/lib$(LIBNAME).a: $(OBJECTS)
        $(YESBAN_AR) -r $@ $(OBJECTS)

$(YESBAN_BINDBG_64)/lib$(LIBNAME).a: $(DBGOBJECTS)
        $(YESBAN_AR) -r $@ $(DBGOBJECTS)

# --> C++ compilation
$(YESBAN_BIN_64)/%.o : %.cpp
        $(YESBAN_CC_64)  $(OPT_CPP) $< -o $@
# --> C compilation.
$(YESBAN_BIN_64)/%.o : %.c
        $(YESBAN_CC_64)  $(OPT_CPP) $< -o $@
# --> C++ compilation
$(YESBAN_BINDBG_64)/%.o : %.cpp
        $(YESBAN_CC_64) $(YESBAN_CCDEBUG)  $(OPT_CPP) $< -o $@


# --> C compilation.
$(YESBAN_BINDBG_64)/%.o : %.c
        $(YESBAN_CC_64) $(YESBAN_CDEBUG)  $(OPT_CPP) $< -o $@


Below is the error I am getting when I try to link by in make file above as below

Code:
OPT_CPP=$(YESBAN_CCOPT) $(_OPT_CPP) $(INCLUDEDIR) $(YESBAN_RW_OPTS) -D_FILE_OFFSET_BITS=64 -DARMA_DONT_USE_WRAPPER -llapack


Quote:
g++: -llapack: linker input file unused because linking not done

Last edited by arunkumar_mca; 11-03-2017 at 01:47 PM..
 

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