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Type:
Bug
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Resolution: Done
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Priority:
Major - P3
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Affects Version/s: 0.5.2, 0.6
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Component/s: None
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None
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Environment:Oracle Linux 6, x64, standard packages only
There seems to be a bit of a mess with SConstruct and Makefile.
I'm gonna bundle all of my observations together, sorry, I don't know how to quite sort them out.
1) Building with Makefile is broken. See, the produced .so file(s) have no actual exported symbols in them.
[vps@druid]~/ws/EF/mongo-c-driver$ make cc -o src/bson.o -c -std=c99 -pedantic -O3 -Wall -ggdb -D_POSIX_SOURCE -DMONGO_HAVE_STDINT src/bson.c cc -o src/encoding.o -c -std=c99 -pedantic -O3 -Wall -ggdb -D_POSIX_SOURCE -DMONGO_HAVE_STDINT src/encoding.c cc -o src/gridfs.o -c -std=c99 -pedantic -O3 -Wall -ggdb -D_POSIX_SOURCE -DMONGO_HAVE_STDINT src/gridfs.c cc -o src/md5.o -c -std=c99 -pedantic -O3 -Wall -ggdb -D_POSIX_SOURCE -DMONGO_HAVE_STDINT src/md5.c cc -o src/mongo.o -c -std=c99 -pedantic -O3 -Wall -ggdb -D_POSIX_SOURCE -DMONGO_HAVE_STDINT src/mongo.c cc -o src/numbers.o -c -std=c99 -pedantic -O3 -Wall -ggdb -D_POSIX_SOURCE -DMONGO_HAVE_STDINT src/numbers.c cc -o src/env_posix.o -c -std=c99 -pedantic -O3 -Wall -ggdb -D_POSIX_SOURCE -DMONGO_HAVE_STDINT src/env_posix.c cc -shared -Wl,-soname,libmongoc.so.0.5 -o libmongoc.so cc -shared -Wl,-soname,libbson.so.0.5 -o libbson.so ar -rs libmongoc.a src/bson.o src/encoding.o src/gridfs.o src/md5.o src/mongo.o src/numbers.o src/env_posix.o ar: creating libmongoc.a ar -rs libbson.a src/bson.o src/numbers.o src/encoding.o ar: creating libbson.a [vps@druid]~/ws/EF/mongo-c-driver$ nm libmongoc.so | grep mongo [vps@druid]~/ws/EF/mongo-c-driver$
That's because (a) the object files are not listed in the linkage command, and (b), object files are not compile with relocatable symbols.
This diff should take care of that problem:
diff --git a/Makefile b/Makefile
index 99c9dd8..c7bdfda 100644
--- a/Makefile
+++ b/Makefile
@@ -136,14 +136,17 @@ md5.o: src/md5.c src/md5.h
mongo.o: src/mongo.c src/mongo.h src/bson.h src/md5.h src/env.h
numbers.o: src/numbers.c
-$(MONGO_DYLIBNAME): $(MONGO_OBJECTS)
- $(MONGO_DYLIB_MAKE_CMD)
+DYN_MONGO_OBJECTS=$(foreach i,$(MONGO_OBJECTS),$(i)s)
+DYN_BSON_OBJECTS=$(foreach i,$(MONGO_OBJECTS),$(i)s)
+
+$(MONGO_DYLIBNAME): $(DYN_MONGO_OBJECTS)
+ $(MONGO_DYLIB_MAKE_CMD) $^
$(MONGO_STLIBNAME): $(MONGO_OBJECTS)
$(AR) -rs $@ $(MONGO_OBJECTS)
-$(BSON_DYLIBNAME): $(BSON_OBJECTS)
- $(BSON_DYLIB_MAKE_CMD)
+$(BSON_DYLIBNAME): $(DYN_BSON_OBJECTS)
+ $(BSON_DYLIB_MAKE_CMD) $^
$(BSON_STLIBNAME): $(BSON_OBJECTS)
$(AR) -rs $@ $(BSON_OBJECTS)
@@ -170,7 +173,7 @@ docs:
python docs/buildscripts/docs.py
clean:
- rm -rf $(MONGO_DYLIBNAME) $(MONGO_STLIBNAME) $(BSON_DYLIBNAME) $(BSON_STLIBNAME) src/*.o test/*_test
+ rm -rf $(MONGO_DYLIBNAME) $(MONGO_STLIBNAME) $(BSON_DYLIBNAME) $(BSON_STLIBNAME) src/*.o src/*.os test/*_test
deps:
$(CC) -MM -DMONGO_HAVE_STDINT src/*.c
@@ -184,4 +187,10 @@ deps:
%.o: %.c
$(CC) -o $@ -c $(ALL_CFLAGS) $<
+
+%.os: %.c
+ $(CC) -o $@ -c $(ALL_CFLAGS) $(DYN_FLAGS) $<
+
+%.os: DYN_FLAGS := -fPIC -DMONGO_DLL_BUILD
+
.PHONY: clean docs
Ok, now, though Makefile doesn't build right, SCons doesn't install right.
I never had any dealings with SCons before this project, so I don't know how to quite address this, but the two things to address are:
(1) Creating shared library - installing .so is not enough, because soname is set to libsome-so.ver, the dynamic linker will insist on looking for that exact file during execution. The links must be installed properly.
(2) Specifying where to install:
for installing via Makefile, you can at least do:
sudo INSTALL_INCLUDE_PATH=/usr/local/mongo-0.6/include INSTALL_LIBRARY_PATH=/usr/local/mongo-0.6/lib make install
but with SCons, there is no indication on how to specify where the installation should be done.
Thanks, Pawel.