fatal error: jemalloc/jemalloc.h: No such file or directory

[zk-kiger]

[21/1190] Building CXX object flow/CMakeFiles/flow.dir/FastAlloc.cpp.o
FAILED: flow/CMakeFiles/flow.dir/FastAlloc.cpp.o
/data/zk/toolchain/bin/c++ -DBOOST_ERROR_CODE_HEADER_ONLY -DBOOST_SYSTEM_NO_DEPRECATED -DNO_INTELLISENSE -I/data/zk/foundationdb -I/data/zk/foundationdb/build -I/data/zk/foundationdb/contrib/fmt-8.1.1/include -isystem /data/zk/foundationdb/build/boost_install/include -O3 -DNDEBUG -DCMAKE_BUILD -ggdb -fno-omit-frame-pointer -mavx -Wno-pragmas -Wno-attributes -Wno-error=format -Wunused-variable -Wno-deprecated -fvisibility=hidden -Wreturn-type -fPIC -Wclass-memaccess -DHAVE_OPENSSL -pthread -std=gnu++17 -MD -MT flow/CMakeFiles/flow.dir/FastAlloc.cpp.o -MF flow/CMakeFiles/flow.dir/FastAlloc.cpp.o.d -o flow/CMakeFiles/flow.dir/FastAlloc.cpp.o -c /data/zk/foundationdb/flow/FastAlloc.cpp
/data/zk/foundationdb/flow/FastAlloc.cpp:594:10: fatal error: jemalloc/jemalloc.h: No such file or directory
594 | #include <jemalloc/jemalloc.h>
| ^~~~~~~~~~~~~~~~~~~~~
compilation terminated.
ninja: build stopped: subcommand failed.

[sfc-gh-anoyes]

This is probably a consequence of the fact that the flow target does not actually link in/depend on jemalloc in cmake. What platform/environment are you compiling on? That will help me make sure I actually fix it

[xis19]

@zk-kiger -- Sorry for jumping in so late, as this is the first time I see this issue, but can you provide some more details about your build environment? I would be interested in the following things:

1. How did you trigger the cmake? Did you add any flags?
2. Can you do a find -name "jemalloc.h" at /? I would like to know if you have it or not.
3. Can you please share the git hash you are using?
   @mavenraven -- may I ask why this change would fix the issue? I would guess adding such dependency would trigger some INCLUDE_DIRECTORY(xxx) command which updates the default include paths but can you show me, e..g the command line that compiles FastAlloc.cpp with/without this patch?