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build: Prefix SDL- to revision from REVISION.txt

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This makes it possible to get the version number of an unknown SDL binary
from `strings libSDL3.so.0 | grep SDL-`, like we could for SDL 2.

Resolves: https://github.com/libsdl-org/SDL/issues/14114
Signed-off-by: Simon McVittie <smcv@collabora.com>
(cherry picked from commit 618b7b6c73)
This commit is contained in:
Simon McVittie
2025-10-02 11:46:59 +01:00
committed by Sam Lantinga
parent 390197d3aa
commit 0bdaaf6c76
1 changed files with 2 additions and 1 deletions
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CMakeLists.txt
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@@ -3153,7 +3153,8 @@ endforeach()
if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/REVISION.txt")
file(STRINGS "${CMAKE_CURRENT_SOURCE_DIR}/REVISION.txt" revisions)
list(GET revisions 0 revisions_0)
string(STRIP "${revisions_0}" SDL_REVISION)
string(STRIP "${revisions_0}" revisions_0_stripped)
set(SDL_REVISION "SDL-${revisions_0_stripped}")
else()
set(SDL_REVISION "" CACHE STRING "Custom SDL revision (only used when REVISION.txt does not exist)")
endif()