Experimental Physics and
Industrial Control System

 Hi,

I installed base-3.15.8 successfully on raspberry pi

But when I install 'alh1_2_35' on raspberry pi OS(kernel version 5.10) on raspberry pi 4, it can't make successfully, the err as follows:

/usr/bin/ld: /home/pi/epics/base-3.15.8/lib/linux-arm/libX11.a(CrGlCur.o): undefined reference to symbol 'dlopen@@GLIBC_2.4'
/usr/bin/ld: //lib/arm-linux-gnueabihf/libdl.so.2: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
make[1]: *** [../../../../base/configure/RULES_BUILD:204: alh] Error 1
make[1]: Leaving directory '/home/pi/epics/extensions/src/alh1_2_35/O.linux-arm'
make: *** [../../../base/configure/RULES_ARCHS:58: install.linux-arm] Error 2
 
I don't know how to fix it, could you give me some advice on it?

Please, Help me! I consumed many time for this problem.

Ryu