Static library will not have any monitor type available

[Andrepuel]

The way that monitor types are registered will not work with static libraries. The technique of creating a static object and inserting code in its constructor does not work with static libraries because the linker will discard any symbol that is not used, since no symbol from the file that contains the static constructor is used, the linker assumes it is safe to remove the static construtor at all.
In other projects I've noticed that just by injecting a fake dependency to any function of the file that contains the static constructor will force the linker to include the static constructor. But you would lose the conveniency of easily inserting new monitors to the project.
IMHO I don't think auto registrar should be used at all.

[biodranik]

I'm also stuck with this issue: monitors are not detected in statically built fswatch binary (Ubuntu).
I found the following workaround:

1. Use $ make V=1 to see verbose output
2. Replace final linker command

$ clang++ -std=gnu++11 -g -O2 -Wall -o fswatch fswatch.o ../libfswatch/src/libfswatch/.libs/libfswatch.a -lpthread

by

$ clang++ -std=gnu++11 -g -Os -Wall -o fswatch fswatch.o -Wl,-whole-archive ../libfswatch/src/libfswatch/.libs/libfswatch.a -Wl,-no-whole-archive -lpthread

Notice the -Wl,-whole-archive parameter. If you also add -static linker option you will get completely independent static binary (without local .so dependencies).

[noahfriedman]

I had to do something similar for OS X as of commit c7d8949
Running make V=1 I see this snippet:

Making all in src
clang++ -std=gnu++11 -DHAVE_CONFIG_H -I. -I../..  -I../../libfswatch/src -DLOCALEDIR=\"/usr/local/share/locale\"   -g -O2 -Wall -c -o fswatch.o fswatch.cpp
/bin/sh ../../libtool  --tag=CXX   --mode=link clang++ -std=gnu++11  -g -O2 -Wall   -o fswatch fswatch.o ../../libfswatch/src/libfswatch/libfswatch.la  -lc -lpthread
libtool: link: clang++ -std=gnu++11 -g -O2 -Wall -o fswatch fswatch.o -Wl,-bind_at_load  ../../libfswatch/src/libfswatch/.libs/libfswatch.a -lc -lpthread -framework CoreServices

I changed -Wl,-bind_at_load to -Wl,-all_load in order for the monitors to work.

[emcrisostomo]

I agree this is complexity that does not pay us back with any meaningful advantage: I'm removing the monitor registration logic.

[emcrisostomo]

It has been closed in master and it will be released shortly.