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Here is the Makefile code:
CC=gcc CXX=g++ OBJS=OMXComponent.o Event.o hello_jpeg.o JPEG.o OMXCore.o Locker.o Logger.o BIN=hello_jpeg.bin # include ../Makefile.include CFLAGS+=-DSTANDALONE -D__STDC_CONSTANT_MACROS -D__STDC_LIMIT_MACROS -DTARGET_POSIX -D_LINUX -fPIC -DPIC -D_REENTRANT -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -U_FORTIFY_SOURCE -Wall -g -DHAVE_LIBOPENMAX=2 -DOMX -DOMX_SKIP64BIT -ftree-vectorize -pipe -DUSE_EXTERNAL_OMX -DHAVE_LIBBCM_HOST -DUSE_EXTERNAL_LIBBCM_HOST -DUSE_VCHIQ_ARM -Wno-psabi LDFLAGS+=-L$(SDKSTAGE)/opt/vc/lib/ -lGLESv2 -lEGL -lopenmaxil -lbcm_host -lvcos -lvchiq_arm -lpthread -lrt -L../libs/ilclient -L../libs/vgfont INCLUDES+=-I$(SDKSTAGE)/opt/vc/include/ -I$(SDKSTAGE)/opt/vc/include/interface/vcos/pthreads -I$(SDKSTAGE)/opt/vc/include/interface/vmcs_host/linux -I./ -I../libs/ilclient -I../libs/vgfont all: $(BIN) $(LIB) %.o: %.c @rm -f $@ $(CC) $(CFLAGS) $(INCLUDES) -g -c $< -o $@ -Wno-deprecated-declarations %.o: %.cpp @rm -f $@ $(CXX) $(CFLAGS) $(INCLUDES) -g -c $< -o $@ -Wno-deprecated-declarations %.bin: $(OBJS) $(CC) -o $@ -Wl,--whole-archive $(OBJS) $(LDFLAGS) -Wl,--no-whole-archive -rdynamic I am not sure why, but suddenly when I am calling my Makefile, it started deleting all the object files !!! It was not deleting before, but lately after running the Makefile, this is what I get in the console window:
rm OMXCore.o JPEG.o OMXComponent.o Logger.o hello_jpeg.o Locker.o Event.o Any idea why it is removing my object files? and how to stop Make from deleting it? What is even more strange is that it was not deleting it yesterday, and it all started today, without me doing any upgrades or making any changes!!! Now when I make a small change in one of my src files, now I have to wait a long time for all the other object files to rebuilt again, which is not necessary and it slows me down.
I am making sure that I am in the correct directory, I even gave "make" a complete path, in case if it is picking up a different Makefile
make -f /my_full_path/Makefile
While Makefile was running, I was doing "ls" in a different terminal, and I noticed that I am correctly accumulating object files, as below:
-rw-rw-r-- 1 pi pi 1170 Mar 3 19:28 Makefile -rw-r--r-- 1 pi pi 482052 Mar 3 19:30 OMXComponent.o -rw-r--r-- 1 pi pi 19984 Mar 3 19:30 Event.o -rw-r--r-- 1 pi pi 14688 Mar 3 19:30 hello_jpeg.o -rw-r--r-- 1 pi pi 162260 Mar 3 19:31 JPEG.o -rw-r--r-- 1 pi pi 215492 Mar 3 19:31 OMXCore.o -rw-r--r-- 1 pi pi 76384 Mar 3 19:31 Locker.o -rw-r--r-- 1 pi pi 0 Mar 3 19:31 Logger.o But all of a sudden, after everything is built, all the object files get removed !!!
And, here is the output of the Makefile command:
pi@raspberrypi /opt/vc/src/hello_pi/hello_jpeg_v2 $ make -f /opt/vc/src/hello_pi/hello_jpeg_v2/Makefile g++ -g -DSTANDALONE -D__STDC_CONSTANT_MACROS -D__STDC_LIMIT_MACROS -DTARGET_POSIX -D_LINUX -fPIC -DPIC -D_REENTRANT -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -U_FORTIFY_SOURCE -Wall -g -DHAVE_LIBOPENMAX=2 -DOMX -DOMX_SKIP64BIT -ftree-vectorize -pipe -DUSE_EXTERNAL_OMX -DHAVE_LIBBCM_HOST -DUSE_EXTERNAL_LIBBCM_HOST -DUSE_VCHIQ_ARM -Wno-psabi -I/opt/vc/include/ -I/opt/vc/include/interface/vcos/pthreads -I/opt/vc/include/interface/vmcs_host/linux -I./ -I../libs/ilclient -I../libs/vgfont -g -c OMXComponent.cpp -o OMXComponent.o -Wno-deprecated-declarations g++ -g -DSTANDALONE -D__STDC_CONSTANT_MACROS -D__STDC_LIMIT_MACROS -DTARGET_POSIX -D_LINUX -fPIC -DPIC -D_REENTRANT -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -U_FORTIFY_SOURCE -Wall -g -DHAVE_LIBOPENMAX=2 -DOMX -DOMX_SKIP64BIT -ftree-vectorize -pipe -DUSE_EXTERNAL_OMX -DHAVE_LIBBCM_HOST -DUSE_EXTERNAL_LIBBCM_HOST -DUSE_VCHIQ_ARM -Wno-psabi -I/opt/vc/include/ -I/opt/vc/include/interface/vcos/pthreads -I/opt/vc/include/interface/vmcs_host/linux -I./ -I../libs/ilclient -I../libs/vgfont -g -c Event.cpp -o Event.o -Wno-deprecated-declarations g++ -g -DSTANDALONE -D__STDC_CONSTANT_MACROS -D__STDC_LIMIT_MACROS -DTARGET_POSIX -D_LINUX -fPIC -DPIC -D_REENTRANT -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -U_FORTIFY_SOURCE -Wall -g -DHAVE_LIBOPENMAX=2 -DOMX -DOMX_SKIP64BIT -ftree-vectorize -pipe -DUSE_EXTERNAL_OMX -DHAVE_LIBBCM_HOST -DUSE_EXTERNAL_LIBBCM_HOST -DUSE_VCHIQ_ARM -Wno-psabi -I/opt/vc/include/ -I/opt/vc/include/interface/vcos/pthreads -I/opt/vc/include/interface/vmcs_host/linux -I./ -I../libs/ilclient -I../libs/vgfont -g -c hello_jpeg.cpp -o hello_jpeg.o -Wno-deprecated-declarations g++ -g -DSTANDALONE -D__STDC_CONSTANT_MACROS -D__STDC_LIMIT_MACROS -DTARGET_POSIX -D_LINUX -fPIC -DPIC -D_REENTRANT -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -U_FORTIFY_SOURCE -Wall -g -DHAVE_LIBOPENMAX=2 -DOMX -DOMX_SKIP64BIT -ftree-vectorize -pipe -DUSE_EXTERNAL_OMX -DHAVE_LIBBCM_HOST -DUSE_EXTERNAL_LIBBCM_HOST -DUSE_VCHIQ_ARM -Wno-psabi -I/opt/vc/include/ -I/opt/vc/include/interface/vcos/pthreads -I/opt/vc/include/interface/vmcs_host/linux -I./ -I../libs/ilclient -I../libs/vgfont -g -c JPEG.cpp -o JPEG.o -Wno-deprecated-declarations g++ -g -DSTANDALONE -D__STDC_CONSTANT_MACROS -D__STDC_LIMIT_MACROS -DTARGET_POSIX -D_LINUX -fPIC -DPIC -D_REENTRANT -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -U_FORTIFY_SOURCE -Wall -g -DHAVE_LIBOPENMAX=2 -DOMX -DOMX_SKIP64BIT -ftree-vectorize -pipe -DUSE_EXTERNAL_OMX -DHAVE_LIBBCM_HOST -DUSE_EXTERNAL_LIBBCM_HOST -DUSE_VCHIQ_ARM -Wno-psabi -I/opt/vc/include/ -I/opt/vc/include/interface/vcos/pthreads -I/opt/vc/include/interface/vmcs_host/linux -I./ -I../libs/ilclient -I../libs/vgfont -g -c OMXCore.cpp -o OMXCore.o -Wno-deprecated-declarations g++ -g -DSTANDALONE -D__STDC_CONSTANT_MACROS -D__STDC_LIMIT_MACROS -DTARGET_POSIX -D_LINUX -fPIC -DPIC -D_REENTRANT -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -U_FORTIFY_SOURCE -Wall -g -DHAVE_LIBOPENMAX=2 -DOMX -DOMX_SKIP64BIT -ftree-vectorize -pipe -DUSE_EXTERNAL_OMX -DHAVE_LIBBCM_HOST -DUSE_EXTERNAL_LIBBCM_HOST -DUSE_VCHIQ_ARM -Wno-psabi -I/opt/vc/include/ -I/opt/vc/include/interface/vcos/pthreads -I/opt/vc/include/interface/vmcs_host/linux -I./ -I../libs/ilclient -I../libs/vgfont -g -c Locker.cpp -o Locker.o -Wno-deprecated-declarations g++ -g -DSTANDALONE -D__STDC_CONSTANT_MACROS -D__STDC_LIMIT_MACROS -DTARGET_POSIX -D_LINUX -fPIC -DPIC -D_REENTRANT -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -U_FORTIFY_SOURCE -Wall -g -DHAVE_LIBOPENMAX=2 -DOMX -DOMX_SKIP64BIT -ftree-vectorize -pipe -DUSE_EXTERNAL_OMX -DHAVE_LIBBCM_HOST -DUSE_EXTERNAL_LIBBCM_HOST -DUSE_VCHIQ_ARM -Wno-psabi -I/opt/vc/include/ -I/opt/vc/include/interface/vcos/pthreads -I/opt/vc/include/interface/vmcs_host/linux -I./ -I../libs/ilclient -I../libs/vgfont -g -c Logger.cpp -o Logger.o -Wno-deprecated-declarations g++ -g -o hello_jpeg.bin -Wl,--whole-archive OMXComponent.o Event.o hello_jpeg.o JPEG.o OMXCore.o Locker.o Logger.o -L/opt/vc/lib/ -lGLESv2 -lEGL -lopenmaxil -lbcm_host -lvcos -lvchiq_arm -lpthread -lrt -L../libs/ilclient -L../libs/vgfont -Wl,--no-whole-archive -rdynamic rm OMXCore.o JPEG.o OMXComponent.o Logger.o hello_jpeg.o Locker.o Event.o 
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The files are being removed because make considers them "intermediate". When make forms a chain of rules to produce a prerequisite, it treats all files created by the intermediate chains as "intermediate" and removes then when the target is created.
some projects put their makefile in src/ subdirectory of the root directories of the projects, some projects put their makefiles in the root directory of the project.
The Cleanup Rule clean: rm *.o prog3 This is an optional rule. It allows you to type 'make clean' at the command line to get rid of your object and executable files. Sometimes the compiler will link or compile files incorrectly and the only way to get a fresh start is to remove all the object and executable files.
The files are being removed because make considers them "intermediate". When make forms a chain of rules to produce a prerequisite, it treats all files created by the intermediate chains as "intermediate" and removes then when the target is created. See Chained Rules in the manual for GNU make.
In your case, you can prevent this in two ways: Get rid of the %.bin rule, which seems wrong anyway, because it says that all .bin files depend on a fixed list of object files, and replace it by
$(BIN): $(OBJS) # as before or mark the object files as "secondary":
.SECONDARY: $(OBJS) If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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