When: 2012-12-10
What: optional gcc LTO support with --enable-lto option
Who: Fabio Pedretti <fabio.ped@libero.it>
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old
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new
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newoption { trigger = "icc", description
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| 7 | 7 | newoption { trigger = "outpath", description = "Location for generated project files" } |
| 8 | 8 | newoption { trigger = "without-audio", description = "Disable use of OpenAL/Ogg/Vorbis APIs" } |
| 9 | 9 | newoption { trigger = "minimal-flags", description = "Only set compiler/linker flags that are really needed. Has no effect on Windows builds" } |
| | 10 | newoption { trigger = "enable-lto", description = "Enable experimental GCC LTO (Link Time Optimization)" } |
| 10 | 11 | newoption { trigger = "without-nvtt", description = "Disable use of NVTT" } |
| 11 | 12 | newoption { trigger = "without-tests", description = "Disable generation of test projects" } |
| 12 | 13 | newoption { trigger = "without-pch", description = "Disable generation and usage of precompiled headers" } |
| … |
… |
else
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| 95 | 96 | minor = 0+minor |
| 96 | 97 | has_broken_pch = (major < 4 or (major == 4 and minor < 2)) |
| 97 | 98 | if has_broken_pch then |
| 98 | | print("WARNING: Detected GCC <4.2 -- disabling PCH for Atlas (will increase build times)") |
| | 99 | print("WARNING: Detected GCC < 4.2 -- disabling PCH for Atlas (will increase build times)") |
| | 100 | end |
| | 101 | if _OPTIONS["enable-lto"] then |
| | 102 | has_broken_lto = (major < 4 or (major == 4 and minor < 7)) |
| | 103 | if has_broken_lto then |
| | 104 | print("WARNING: Detected GCC < 4.7 -- disabling GCC LTO") |
| | 105 | end |
| 99 | 106 | end |
| 100 | 107 | end |
| 101 | 108 | end |
| … |
… |
function project_set_build_flags()
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| 235 | 242 | } |
| 236 | 243 | end |
| 237 | 244 | |
| | 245 | if _OPTIONS["enable-lto"] and not has_broken_lto then |
| | 246 | buildoptions { "-flto" } |
| | 247 | linkoptions { "-flto" } |
| | 248 | end |
| | 249 | |
| 238 | 250 | if arch == "x86" or arch == "amd64" then |
| 239 | 251 | buildoptions { |
| 240 | 252 | -- enable SSE intrinsics |
