CODEWITHSUNDEEP
c++ld
user2836797
user2836797

Reputation:

ld not picking up library

Inside /usr/local/lib I have the following files:

libxerces-c.so
libxerces-c.so.28
libxerces-c.so.28.0

My linker fails at this command:

g++ -m64 -o waspxs ConfigureWaspJobs.o MainWindow.o DataTypes.o waspxs.o \
    XercesString.o qrc_buttons.o moc_ConfigureWaspJobs.o moc_MainWindow.o \
    -L/usr/X11R6/lib64 -L../common -L../prewaspwdll -L/usr/local/lib \
    -pthread -lcommon -lprewaspwdll -lxerces-c -lQt5Widgets \
    -L/usr/lib/x86_64-linux-gnu -lQt5Gui -lQt5Core -lGL -lpthread
/usr/bin/ld: cannot find -lxerces-c

Note that the options include -L/usr/local/lib and -lxerces-c.

What am I missing here?

When I run file on the libs:

$ file libxerces*
libxerces-c.so:           broken symbolic link to `/home/samuel/Desktop/xerces-c-src_2_8_0/lib/libxerces-c.so.28'
libxerces-c.so.28:        symbolic link to `libxerces-c.so.28.0'
libxerces-c.so.28.0:      ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, BuildID[sha1]=0x44c1a6dbfbe5b51a17fc0ce42097af88a8e8a7f0, not stripped
libxerces-depdom.so:      broken symbolic link to `/home/samuel/Desktop/xerces-c-src_2_8_0/lib/libxerces-depdom.so.28'
libxerces-depdom.so.28:   symbolic link to `libxerces-depdom.so.28.0'
libxerces-depdom.so.28.0: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, BuildID[sha1]=0xc9f643c520055a931c596f713853654192a5a7fa, not stripped

Upvotes: 2

Views: 617

Answers (1)

jxh
jxh

Reputation: 70492

Since you are explicitly building a 64 bit binary (as you are using -m64), you should make sure you have the 64 bit version of xerces installed. Usually, the 64 bit library directory would have 64 appended to it. For example: /usr/local/lib64.

The file command reports the symbolic link is broken. Therefore, the library cannot be found. To fix, remove the broken link, and create a fixed one.

rm /usr/local/lib/libxerces-c.so
ln -s /usr/local/lib/libxerces-c.so.28 /usr/local/lib/libxerces-c.so

If your version of ln supports it, you can do it with a single command:

ln -sf /usr/local/lib/libxerces-c.so.28 /usr/local/lib/libxerces-c.so

Upvotes: 3

Related Questions