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Author SHA1 Message Date
Andy Green
5c7b5af92a cmake: disable export visibility when building lws static
This is complicated by the fact extern on a function declaration implies
visibility... we have to make LWS_EXTERN empty when building static.

And, setting target_compile_definitions() doesn't work inside macros,
so it has to be set explicitly for the plugins.

Checking the symbol status needs nm -C -D as per

https://stackoverflow.com/questions/37934388/symbol-visibility-not-working-as-expected

after this patch, libwebsockets.a shows no symbols when checked like that and
the static-linked minimal examples only show -U for their other dynamic
imports.

In a handful of cases we use LWS_EXTERN on extern data declarations,
those then need to change to explicit extern.
2020-09-06 11:46:25 +01:00
Andy Green
c3dee88156 static build: lwsws 2020-09-01 08:10:06 +01:00
Andy Green
b3131fdfdd cmakelist: Augean Stables refactor
Establish a new distributed CMake architecture with CMake code related to
a source directory moving to be in the subdir in its own CMakeLists.txt.
In particular, there's now one in ./lib which calls through to ones
further down the directory tree like ./lib/plat/xxx, ./lib/roles/xxx etc.

This cuts the main CMakelists.txt from 98KB -> 33KB, about a 66% reduction,
and it's much easier to maintain sub-CMakeLists.txt that are in the same
directory as the sources they manage, and conceal all the details that that
level.

Child CMakelists.txt become responsible for:

 - include_directories() definition (this is not supported by CMake
   directly, it passes it back up via PARENT_SCOPE vars in helper
   macros)

 - Addition child CMakeLists.txt inclusion, for example toplevel ->
   role -> role subdir

 - Source file addition to the build

 - Dependent library path resolution... this is now a private thing
   in the child CMakeLists.txt, it just passes back any adaptations
   to include_directories() and the LIB_LIST without filling the
   parent namespace with the details
2020-05-27 08:40:12 +01:00