Samples get linked with system glog.so and glogd.so built from source resulting in conflicts

[vicvicg]

Samples from ./examples/[simple_cache|simple_compact_cache] get linked with system glog.so and glogd.so built from source resulting in conflicts.

Steps to reproduce:

./contrib/build.sh -d -v # Build CacheLib
cd examples/simple_cache/
./build.sh # Build simple_cache example
ldd build/simple-cache-example | grep glog
libglog.so.0 => /lib/x86_64-linux-gnu/libglog.so.0 (0x00007f0d95bae000)
libglogd.so.0 => /home//CacheLib/opt/cachelib/lib/libglogd.so.0 (0x00007f0d941ef000)
./build/simple-cache-example
ERROR: flag 'logtostderr' was defined more than once (in files '/home//CacheLib/cachelib/external/glog/src/logging.cc' and 'src/logging.cc').

OS: Ubuntu 20.04 running on WSL2.

[decibel26]

Getting the same error. I tried on a new VM Ubuntu 20.04.3 LTS, still getting the error.
ERROR: flag 'logtostderr' was defined more than once (in files '/home/student/CacheLib/cachelib/external/glog/src/logging.cc' and 'src/logging.cc').

[agordon]

Thank you for the bug report @vicvicg and @decibel26 - you stumbled on an edge case - building "cachelib" in debug mode (build.sh -d) and the sample in release mode (the default of the build.sh script).
I'll commit a fix that allows building the sample in debug mode as well.
As a temporary work-around, please try adding -DCMAKE_BUILD_TYPE=Debug to the CMAKE_PARAMS in line 28 of:

CacheLib/examples/simple_cache/build.sh

Line 28 in f200cef

CMAKE_PARAMS="-DCMAKE_INSTALL_PREFIX='$PREFIX' -DCMAKE_MODULE_PATH='$CLCMAKE'"

[vicvicg]

-DCMAKE_BUILD_TYPE=Debug

Thank you, @agordon - this workaround works.

[sathyaphoenix]

Thanks for the quick work-around @agordon !

[decibel26]

Worked for me as well. Thanks, @agordon.

[sathyaphoenix]

@vicvicg Is this still an issue for you ?

[vicvicg]

@sathyaphoenix What is the recommended way to switch between release and debug builds for samples without modifying the build file itself?

[sathyaphoenix]

@agordon is the fix that you mention committed to main branch ?