We must avoid the following features:
- the `using` syntax for typedefs
- alias templates (so, rename `hyper_function` to `function`)
- the `override` keyword
- defaulted virtual destructors
Before:
time c++ -O2 -DMAC -I/usr/local/include -std=c++11 -march=native
-W -Wall -Wextra -Werror -pedantic -Wno-format-pedantic
-Wno-missing-field-initializers -Wno-unused-parameter
-DCAP_GLEW=0 -DCAP_PNG=0 -c hyper.cpp -o hyper.o
real 2m22.508s
user 2m20.625s
sys 0m1.648s
After:
time c++ -O2 -DMAC -I/usr/local/include -std=c++11 -march=native
-W -Wall -Wextra -Werror -pedantic -Wno-format-pedantic
-Wno-missing-field-initializers -Wno-unused-parameter
-DCAP_GLEW=0 -DCAP_PNG=0 -c hyper.cpp -o hyper.o
real 1m30.515s
user 1m29.793s
sys 0m0.689s
Comparing object file size:
-rw-r--r-- 1 ajo staff 8215036 Jan 5 20:46 old-hyper.o
-rw-r--r-- 1 ajo staff 7538072 Jan 5 20:47 new-hyper.o
Comparing number of symbols:
nm old-hyper.o | wc -l => 12590
nm new-hyper.o | wc -l => 9742
No appreciable difference in link time; the linker takes less than
half a second in either case.
