Flatpak build (#4175)

* Initial commit for the builder

* fix wx, use hack to install into /app

* add some workarounds for /usr/local

* fix up rest of paths

* attempt to fix wxwebview undef

* figure out why wxwidgets isnt getting its patches applied

* do "proper" patching of wxwidgets

* Flip the flag

* actually append the /usr/local

* restrict package finding to flatpak only

* Update the destdir stuff for mpfr, gmp

* Transfer over all the _destdir, again

* update patch command for all other plats

* initial ci check

* what even happened

* clear ci image

* I doubt this will do anything

* do cleanup after running each step

* remove build objects for flatpak ci

* compress debug info

* Fix MacOS build

* Try saving space after building deps

* No debug info for now

* Do debug info, use thin static archives

* use BSD flag, not --thin

* try building with lto

* Use release, no debug info

* remove lto

* Revert the last 5 commits

* It might require write perms

* Revert "It might require write perms"

This reverts commit 44cec58a57.

* Import fixes for merge

* remove some patch stuff

* the worst hack!

* remove uneeded patches

* Initial commit for the builder

* note to self, go back to regular wx

* attempt to fix wxwebview undef

* do "proper" patching of wxwidgets

* update patch command for all other plats

* what even happened

* -ldep_name-NOTFOUND is still here

* concat patches

* Build wx with flatpak

* more wx shenatigans

* fix a missing import

* build wx with proper flags

* fix imports and libs

* trigger ci

* try fixing mac and windows ci

* remove duplicate definition of freetype

* curl may not have openssl for a dep

* has openssl been found?

* force building

* build images on apple

* cleanup for review

* cleanup cmake files

---------

Co-authored-by: SoftFever <softfeverever@gmail.com>

deps/OpenEXR/OpenEXR.cmake

@@ -15,11 +15,11 @@ if (APPLE AND IS_CROSS_COMPILE)
         EXCLUDE_FROM_ALL    ON
         URL https://github.com/AcademySoftwareFoundation/openexr/archive/refs/tags/v2.5.5.zip
         URL_HASH SHA256=0307a3d7e1fa1e77e9d84d7e9a8694583fbbbfd50bdc6884e2c96b8ef6b902de
-        INSTALL_DIR         ${DESTDIR}/usr/local
+        INSTALL_DIR         ${DESTDIR}
         DOWNLOAD_DIR        ${DEP_DOWNLOAD_DIR}/OpenEXR
         ${_openxr_list_sep}
         CMAKE_ARGS
-            -DCMAKE_INSTALL_PREFIX:STRING=${DESTDIR}/usr/local
+            -DCMAKE_INSTALL_PREFIX:STRING=${DESTDIR}
             -DBUILD_SHARED_LIBS:BOOL=OFF
             -DCMAKE_POSITION_INDEPENDENT_CODE=ON
             -DBUILD_TESTING=OFF 
@@ -54,4 +54,4 @@ endif()
 
 if (MSVC)
     add_debug_dep(dep_OpenEXR)
-endif ()
+endif ()