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Notes |
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(0021193)
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Ivar Gaitan
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2010-06-30 04:51
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(0021383)
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Brad King
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2010-07-13 10:01
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What "--help" output does each version of ld provide? Does the output also appear through "gcc --help" or "gcc -v --help"? Perhaps we can detect whether the response file syntax is supported. |
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(0021662)
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Ivar Gaitan
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2010-08-05 10:11
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With respect to '@FILE' they give identical outputs.
"gcc --help" doesn't mention it and "gcc -v --help" just echos the ld.exe help output.
======
C:\...\mingw\mingw32\bin>ld_2.16.exe --help
Usage: ld_2.16.exe [options] file...
Options:
[...]
@FILE Read options from FILE
C:\...\mingw\mingw32\bin>ld_2.20.exe --help
Usage: ld_2.20.exe [options] file...
Options:
[...]
@FILE Read options from FILE |
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(0021664)
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Brad King
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2010-08-05 10:32
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So the ld 2.16 help says that the option is supported, but it does not work? |
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(0021665)
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Ivar Gaitan
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2010-08-05 10:34
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Yes, just double checked.
C:\...\mingw\mingw32\bin>ld_2.16.exe -v
GNU ld version 2.16.91 20060119 |
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(0021666)
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Brad King
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2010-08-05 10:50
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Okay, take a look at Modules/Platform/Windows-GNU.cmake for the code
set(CMAKE_${lang}_USE_RESPONSE_FILE_FOR_OBJECTS 1)
set(CMAKE_${lang}_RESPONSE_FILE_LINK_FLAG "-Wl,@")
Try adding this:
execute_process(
COMMAND ld -v
OUTPUT_VARIABLE _help
ERROR_VARIABLE _help
)
if("${_help}" MATCHES "GNU ld .* 2\\.1[1-6]")
set(CMAKE_${lang}_USE_RESPONSE_FILE_FOR_OBJECTS 0)
endif() |
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(0021685)
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Ivar Gaitan
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2010-08-06 05:58
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(0021686)
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Brad King
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2010-08-06 09:42
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