Thread: /usr/bin/ld: cannot find [...] when compiling
Hi, My Makefile looks like this: PROGRAM = test DATA = test.c PG_CONFIG = pg_config PGXS := $(shell $(PG_CONFIG) --pgxs) include $(PGXS) The file test.c only includes the postgres.h (#include "postgres.h"), but I get this error, when compiling: /usr/bin/ld: cannot find -lxslt /usr/bin/ld: cannot find -lxml2 /usr/bin/ld: cannot find -lpam /usr/bin/ld: cannot find -ledit collect2: ld returned 1 exit status make: *** [test] Error 1 Does anyone have an idea? Janek Sendrowski
"Janek Sendrowski" <janek12@web.de> writes:
> <div>The file test.c only includes the postgres.h (#include "postgres.h"), but I get this error, when
compiling:</div>
> <div>/usr/bin/ld: cannot find -lxslt<br/>
> /usr/bin/ld: cannot find -lxml2<br/>
> /usr/bin/ld: cannot find -lpam<br/>
> /usr/bin/ld: cannot find -ledit<br/>
> collect2: ld returned 1 exit status<br/>
> make: *** [test] Error 1</div>
[ please don't post html-only mail to the PG lists ]
Where did you get your Postgres installation from? It looks like it was
configured to be built with a bunch of libraries that you don't have
installed, so I'm guessing it wasn't self-built.
The path of least resistance would be to install libxslt-devel,
libxml2-devel, pam-devel, libedit-devel, etc (or whatever those packages
are named on your platform), so as to match the build environment that
the Postgres package is expecting.
regards, tom lane
Hi, Thanks for your answer. Now the link editor is working, but I still have one problem. The files in /utils for example include there files with #include "utils/filename" and it doesn't work, because the filewhich includes them is already in the directory /utils. It's the same with all directories... Sorry, if this question is to silly, but what do I wrong? Janek Sendrowski
"Janek Sendrowski" <janek12@web.de> writes:
> Now the link editor is working, but I still have one problem.
> The files in /utils for example include there files with #include "utils/filename" and it doesn't work, because the
filewhich includes them is already in the directory /utils.
Could we see the exact code you're writing and the output of the "make"
attempt? (That is, I want to see both the gcc call and the error
message.) It should "just work", and you're not providing nearly
enough information to guess at what's wrong.
regards, tom lane
The file test.c just inlcudes: #include "postgres.h". root@ubuntu:/usr/include/postgresql/9.3/server# gcc test.c In file included from postgres.h:48:0, from test.c:1: utils/elog.h:69:28: fatal error: utils/errcodes.h: No such file or directory compilation terminated. If elog.h file only includes "errcodes.h" without /utils, it's working. It's the same With all files I'm including. Makefile: PROGRAM = test DATA = test.c PG_CONFIG = pg_config PGXS := $(shell $(PG_CONFIG) --pgxs) include $(PGXS) root@ubuntu:/usr/include/postgresql/9.3/server# make gcc -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Wformat-security -Werror=format-security -fPIC -pie -I/usr/include/mit-krb5-DLINUX_OOM_ADJ=0 -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels-Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -fexcess-precision=standard -g -L/usr/lib -Wl,-Bsymbolic-functions -Wl,-z,relro -Wl,-z,now -Wl,--as-needed -L/usr/lib/mit-krb5 -L/usr/lib/i386-linux-gnu/mit-krb5-L/usr/lib/i386-linux-gnu -Wl,--as-needed -lpgport -lpgcommon -lxslt -lxml2 -lpam -lssl-lcrypto -lkrb5 -lcom_err -lgssapi_krb5 -lz -ledit -lcrypt -ldl -lm -o test /usr/bin/ld: cannot find -lxslt /usr/bin/ld: cannot find -lxml2 /usr/bin/ld: cannot find -lpam /usr/bin/ld: cannot find -ledit collect2: ld returned 1 exit status make: *** [test] Error 1 I don't know where to get these devel-packages. Could I just reinstall the postgresql-server-dev-9.3 package? Janek Sendrowski
"Janek Sendrowski" <janek12@web.de> writes:
> The file test.c just inlcudes: #include "postgres.h".
> root@ubuntu:/usr/include/postgresql/9.3/server# gcc test.c
> In file included from postgres.h:48:0,
> from test.c:1:
> utils/elog.h:69:28: fatal error: utils/errcodes.h: No such file or directory
> compilation terminated.
> If elog.h file only includes "errcodes.h" without /utils, it's working.
> It's the same With all files I'm including.
> Makefile:
> PROGRAM = test
> DATA = test.c
> PG_CONFIG = pg_config
> PGXS := $(shell $(PG_CONFIG) --pgxs)
> include $(PGXS)
> root@ubuntu:/usr/include/postgresql/9.3/server# make
> gcc -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Wformat-security -Werror=format-security -fPIC -pie
-I/usr/include/mit-krb5-DLINUX_OOM_ADJ=0 -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement
-Wendif-labels-Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -fexcess-precision=standard -g
-L/usr/lib -Wl,-Bsymbolic-functions -Wl,-z,relro -Wl,-z,now -Wl,--as-needed -L/usr/lib/mit-krb5
-L/usr/lib/i386-linux-gnu/mit-krb5-L/usr/lib/i386-linux-gnu -Wl,--as-needed -lpgport -lpgcommon -lxslt -lxml2 -lpam
-lssl-lcrypto -lkrb5 -lcom_err -lgssapi_krb5 -lz -ledit -lcrypt -ldl -lm -o test
It looks like the problem is that there aren't any Postgres-specific -I
flags in the make command. After a bit of poking around in the pgxs code
I think the reason why not is that you're using the PROGRAM target instead
of MODULES or MODULE_big. This might be a bug in our makefiles, but it's
also somewhat defensible, in that if you're building a standalone program
then you aren't going to have access to any server internal functions.
What's your actual goal here --- are you trying to build a server
extension or a standalone program? If the former, you should be using the
MODULES or MODULE_big targets. If the latter, you should probably be
including postgres_fe.h not postgres.h.
> /usr/bin/ld: cannot find -lxslt
> /usr/bin/ld: cannot find -lxml2
> /usr/bin/ld: cannot find -lpam
> /usr/bin/ld: cannot find -ledit
> collect2: ld returned 1 exit status
> make: *** [test] Error 1
> I don't know where to get these devel-packages.
Since you let slip that you're using ubuntu, they probably have names
ending in -dev not -devel.
regards, tom lane
I wrote:
> "Janek Sendrowski" <janek12@web.de> writes:
>> Makefile:
>> PROGRAM = test
>> DATA = test.c
> It looks like the problem is that there aren't any Postgres-specific -I
> flags in the make command. After a bit of poking around in the pgxs code
> I think the reason why not is that you're using the PROGRAM target instead
> of MODULES or MODULE_big.
No, wait, I take that back. The problem with this makefile is you
need to say
OBJS = test.o
in order to tell the makefile what files PROGRAM is built from. It seems
pretty unlikely that "DATA = test.c" is what you want, either.
Having said that, I'm still not sure that PROGRAM is really the final
target you want.
regards, tom lane
Now it's working. My Makefile: OBJS = test.o MODULES = test DATA = test.c PG_CONFIG = pg_config PGXS := $(shell $(PG_CONFIG) --pgxs) include $(PGXS) Is it possible to execute the code just like this? I like to do that for Debugging. I can't execute the .so files, of course and If I just do "gcc filename", I have the issue with the includes. Janek Sendrowski
"Janek Sendrowski" <janek12@web.de> writes:
> Is it possible to execute the code just like this?
> I like to do that for Debugging.
> I can't execute the .so files, of course and If I just do "gcc filename", I have the issue with the includes.
No, if it's a backend extension there's no way to execute it standalone.
regards, tom lane