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cmake: Fix find_program usage for 3.15

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yuzu requires CMake 3.15 yet find_program was using REQUIRED, which is
only available on 3.18 and later. Instead, we check for
"<VAR>-NOTFOUND".

In addition, check for additional requirements before building libusb or
FFmpeg with autotools. Otherwise, CMake configuration will pass yet
compilation will fail.
This commit is contained in:
lat9nq
2021-06-13 01:15:54 -04:00
parent 8b5655a98e
commit 932c0184a7
3 changed files with 24 additions and 2 deletions
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10
CMakeLists.txt
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@ -473,7 +473,15 @@ if (YUZU_USE_BUNDLED_FFMPEG)
# FFmpeg has source that requires one of nasm or yasm to assemble it.
# REQUIRED throws an error if not found here during configuration rather than during compilation.
find_program(ASSEMBLER NAMES nasm yasm REQUIRED)
find_program(ASSEMBLER NAMES nasm yasm)
if ("${ASSEMBLER}" STREQUAL "ASSEMBLER-NOTFOUND")
message(FATAL_ERROR "One of either `nasm` or `yasm` not found but is required.")
endif()
find_program(AUTOCONF autoconf)
if ("${AUTOCONF}" STREQUAL "AUTOCONF-NOTFOUND")
message(FATAL_ERROR "Required program `autoconf` not found.")
endif()
set(FFmpeg_PREFIX ${PROJECT_SOURCE_DIR}/externals/ffmpeg)
set(FFmpeg_BUILD_DIR ${PROJECT_BINARY_DIR}/externals/ffmpeg)