On Thursday, 28 September 2023 at 08:38:42 UTC, Imperatorn wrote:
Today I randomly tried compiling a hello world using DMD, LDC
and gcc (yes, not gdc)
I compared binary sizes and something looked off. The D ones
were much larger.
Sometimes 10x, with some optimizations still about 2x.
But, then I tried using shared default lib and the size is even
smaller than the one produced by gcc -Os!
I just did two versions, one with betterC with extern(C) and
one with std.stdio : printf
(I didn't try dmd since I couldn't figure out easily how to
share lib)
[1] ldc2 -O -release -link-defaultlib-shared -betterC app.d
[2] ldc2 -O -release -link-defaultlib-shared app.d
Both are smaller than the gcc-version.
How is this possible? What are the consequences and trade-offs?
Maybe this should have been posted in Learn instead, but idk.
Thanks
Oops, typo, I actually posted it in learn :D
