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build: add meson option to disable static linking

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In the current state, meson is searching for static dependencies, and if
it does not find them, it will link dynamically anyway.

On a system without any static libraries, meson produces 90 warnings
at setup phase like this one :
> WARNING: Static library 'avcodec' not found for dependency
> 'libavcodec', may not be statically linked

This commit is adding a meson *staticdeps* option (defaulting to true).
This allow us to disable static dependencies search if we know that we
don't want to link statically.

You can disable static linking by using this option at setup phase :
> $ meson setup [...] -Dstaticdeps=false

Linking dynamically will require two additional dependencies :
 * zlib
 * glibc's libm

Without linking to zlib, build is failing with :
> [...]x86_64-pc-linux-gnu/bin/ld:
>  TR1X.p/src_game_savegame_savegame_bson.c.o: undefined reference
>    to symbol 'compressBound@@ZLIB_1.2.0'
> [..]x86_64-pc-linux-gnu/bin/ld:
>  /lib64/libz.so.1: error adding symbols: DSO missing from command line
> collect2: error: ld returned 1 exit status

Without linking to libm, build is failing with :
> [...]x86_64-pc-linux-gnu/bin/ld:
> TR1X.p/src_game_screen.c.o: undefined reference
>     to symbol 'round@@GLIBC_2.2.5'
> [...]x86_64-pc-linux-gnu/bin/ld:
> /lib64/libm.so.6: error adding symbols: DSO missing from command line
> collect2: error: ld returned 1 exit status

Signed-off-by: Fabrice Delliaux <netbox253@gmail.com>
This commit is contained in:
Fabrice Delliaux 2023-11-25 14:18:08 +01:00 • committed by Marcin Kurczewski
parent 420143d76e
commit f846c693f2
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GPG key ID: CC65E6FD28CAE42A
2 changed files with 20 additions and 6 deletions
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25
meson.build
View file

@ -22,19 +22,28 @@ build_opts = [
c_opts = []
add_project_arguments(build_opts + c_opts, language: 'c')
staticdeps = get_option('staticdeps')
if host_machine.system() == 'windows'
dep_opengl32 = c_compiler.find_library('opengl32')
else
dep_opengl32 = dependency('GL')
endif
dep_avcodec = dependency('libavcodec', static: true)
dep_avformat = dependency('libavformat', static: true)
dep_avutil = dependency('libavutil', static: true)
dep_swscale = dependency('libswscale', static: true)
dep_swresample = dependency('libswresample', static: true)
null_dep = dependency('', required: false)
dep_sdl2 = dependency('SDL2', static: true)
dep_avcodec = dependency('libavcodec', static: staticdeps)
dep_avformat = dependency('libavformat', static: staticdeps)
dep_avutil = dependency('libavutil', static: staticdeps)
dep_swscale = dependency('libswscale', static: staticdeps)
dep_swresample = dependency('libswresample', static: staticdeps)
dep_zlib = null_dep
if not staticdeps
dep_zlib = dependency('zlib', static: staticdeps)
endif
dep_sdl2 = dependency('SDL2', static: staticdeps)
# autogenerated files
resources = []
@ -79,6 +88,9 @@ if host_machine.system() == 'windows'
link_args = ['-static']
else
link_args = []
if not staticdeps
link_args += ['-lm']
endif
endif
sources = [
@ -283,6 +295,7 @@ dependencies = [
dep_sdl2,
dep_swresample,
dep_swscale,
dep_zlib,
]
executable(

1
meson.options Normal file
View file

@ -0,0 +1 @@
option('staticdeps', type: 'boolean', value: true, description: 'Try to build against static dependencies. default: true')