[blfs-support] JSON-C fails to build

Dan McGhee beesnees at grm.net
Fri Dec 20 09:15:17 PST 2013

I'm building JSON-C as a dependency for PulseAudio.  It fails to build with:

> /bin/sh ./libtool --tag=CC   --mode=link gcc -Wall -Werror -Wextra 
> -Wwrite-strings -Wno-unused-parameter -std=gnu99 -D_GNU_SOURCE 
> -D_REENTRANT -g -O2 -version-info 1:0:1 -no-undefined -ljson-c  -o 
> libjson.la -rpath /usr/lib libjson.lo -ljson-c
> mv -f .deps/json_util.Tpo .deps/json_util.Plo
> mv -f .deps/printbuf.Tpo .deps/printbuf.Plo
> mv -f .deps/linkhash.Tpo .deps/linkhash.Plo
> libtool: link: gcc -shared  .libs/libjson.o   -ljson-c -Wl,-soname 
> -Wl,libjson.so.0 -o .libs/libjson.so.0.1.0
> /usr/bin/ld: cannot find -ljson-c
> collect2: error: ld returned 1 exit status
> make[2]: *** [libjson.la] Error 1
> make[2]: *** Waiting for unfinished jobs....
> mv -f .deps/json_object.Tpo .deps/json_object.Plo
> mv -f .deps/json_tokener.Tpo .deps/json_tokener.Plo
> make[2]: Leaving directory `/usr/src/json-c-0.11/json-c-0.11'
> make[1]: Leaving directory `/usr/src/json-c-0.11/json-c-0.11'
> make[1]: *** [all-recursive] Error 1
> make: *** [all] Error 2

I don't know if it's relevant, but the README file contains this:

> Linking to libjson-c
> If your system has pkgconfig then you can just add this to your makefile
> CFLAGS += $(shell pkg-config --cflags json-c)
> LDFLAGS += $(shell pkg-config --libs json-c)
> Without pkgconfig, you would do something like this:
> JSON_C_DIR=/path/to/json_c/install
> CFLAGS += -I$(JSON_C_DIR)/include/json-c
> LDFLAGS+= -L$(JSON_C_DIR)/lib -ljson-c

If it's relevant to pass any of these things to get JSON-C to build, how 
and where would I do it?


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