f2df4e0076
Glew.obj is one of the more expensive targets we have to build clocking in at 34.907 seconds. The root cause [1] is the msvc inliner is not super thrilled with the glewIsSupported supported function, this patch changes the buildflags of extern_glew to optimize for size rather than speed. Given glew is only in play at initalization time there will be no performance impact. Time to build glew.obj Before: 34.907s After : 1.961s [1] https://developercommunity.visualstudio.com/content/problem/732941/slow-compilation-of-glewc-for-visual-studio-2019-x.html Differential Revision: https://developer.blender.org/D6656 Reviewers: brecht, sergey, fclem
67 lines
1.7 KiB
CMake
67 lines
1.7 KiB
CMake
# ***** BEGIN GPL LICENSE BLOCK *****
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software Foundation,
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# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#
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# The Original Code is Copyright (C) 2006, Blender Foundation
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# All rights reserved.
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# ***** END GPL LICENSE BLOCK *****
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# avoid noisy warnings
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if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_C_COMPILER_ID MATCHES "Clang")
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add_c_flag(
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"-Wno-strict-prototypes"
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)
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endif()
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# MSVC's inliner is not having a happy time with glewIsSupported
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# causing this to be one of the most expensive things to build
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# in blender. Optimize for size rather than speed sidesteps this
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# problem, more details at
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# https://developercommunity.visualstudio.com/content/problem/732941/slow-compilation-of-glewc-for-visual-studio-2019-x.html
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if(MSVC)
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add_c_flag("/Os")
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endif()
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set(INC
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include
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)
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set(INC_SYS
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)
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if(UNIX)
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list(APPEND INC_SYS
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${X11_X11_INCLUDE_PATH}
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)
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endif()
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set(SRC
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src/glew.c
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include/GL/eglew.h
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include/GL/glew.h
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include/GL/glxew.h
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include/GL/wglew.h
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)
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set(LIB
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)
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add_definitions(${GL_DEFINITIONS})
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blender_add_lib(extern_glew "${SRC}" "${INC}" "${INC_SYS}" "${LIB}")
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