3 ms·

2.2MiB for "Hello, World"? I must be getting old... The executable takes 33KB in C, 75KB in nim.

by esafak 1y ago

creatonez 1y ago
> The executable takes 33KB in C, 75KB in nim. Did you statically link Glibc...? Or is this with a non-GNU libc? Either way, it probably is true that this 2.2MiB number would be smaller on, say, Debian 5. And much smaller on PDP Unix.
koito17 1y ago
By switching to e.g. musl, you can go down to a single megabyte ;) But in all seriousness, my example is quite cherrypicked, since nobody will actually statically link glibc. And even if they did, one can make use of link-time optimization to remove lots of patches of unused code. Note that this is the same strategy one would employ to debloat their Rust binaries. (Use LTO, don't aggressively inline code, etc.)
- 3836293648 1y ago
  Just a `puts("Hello world!")` with -Os statically linked to musl is 22k
3836293648 1y ago
We just have large standard libraries now
- surajrmal 1y ago
  lto will remove most of it.
AdieuToLogic 1y ago
Just for fun, I wondered how small a canonical hello world program could be in macOS running an ARM processor. Below is based on what I found here[0] with minor command-line switch alterations to account for a newer OS version. ARM64 assembly program (hw.s): // // Assembler program to print "Hello World!" // to stdout. // // X0-X2 - parameters to linux function services // X16 - linux function number // .global _start // Provide program starting address to linker .align 2 // Setup the parameters to print hello world // and then call Linux to do it. _start: mov X0, #1 // 1 = StdOut adr X1, helloworld // string to print mov X2, #13 // length of our string mov X16, #4 // MacOS write system call svc 0 // Call linux to output the string // Setup the parameters to exit the program // and then call Linux to do it. mov X0, #0 // Use 0 return code mov X16, #1 // Service command code 1 terminates this program svc 0 // Call MacOS to terminate the program helloworld: .ascii "Hello World!\n" Assembling and linking commands: as -o hw.o hw.s && ld -macos_version_min 14.0.0 -o hw hw.o -lSystem -syslibroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.2.sdk -e _start -arch arm64 Resulting file sizes: -rwxr-xr-x 1 <uid> <gid> 16K Jun 18 21:23 hw -rw-r--r-- 1 <uid> <gid> 440B Jun 18 21:23 hw.o -rw-r--r-- 1 <uid> <gid> 862B Jun 18 21:21 hw.s 0 - https://smist08.wordpress.com/2021/01/08/apple-m1-assembly-language-hello-world/ https://smist08.wordpress.com/2021/01/08/apple-m1-assembly-l...

2.2MiB for "Hello, World"? I must be getting old... The executable takes 33KB in C, 75KB in nim.

by esafak 1y ago

2.2MiB for "Hello, World"? I must be getting old... The executable takes 33KB in C, 75KB in nim.

> The executable takes 33KB in C, 75KB in nim. Did you statically link Glibc...? Or is this with a non-GNU libc? Either way, it probably is true that this 2.2MiB number would be smaller on, say, Debian 5. And much smaller on PDP Unix.

koito17 1y ago

By switching to e.g. musl, you can go down to a single megabyte ;) But in all seriousness, my example is quite cherrypicked, since nobody will actually statically link glibc. And even if they did, one can make use of link-time optimization to remove lots of patches of unused code. Note that this is the same strategy one would employ to debloat their Rust binaries. (Use LTO, don't aggressively inline code, etc.)

3836293648 1y ago
Just a `puts("Hello world!")` with -Os statically linked to musl is 22k

3836293648 1y ago

We just have large standard libraries now

surajrmal 1y ago
lto will remove most of it.

AdieuToLogic 1y ago

Just for fun, I wondered how small a canonical hello world program could be in macOS running an ARM processor. Below is based on what I found here[0] with minor command-line switch alterations to account for a newer OS version. ARM64 assembly program (hw.s): // // Assembler program to print "Hello World!" // to stdout. // // X0-X2 - parameters to linux function services // X16 - linux function number // .global _start // Provide program starting address to linker .align 2 // Setup the parameters to print hello world // and then call Linux to do it. _start: mov X0, #1 // 1 = StdOut adr X1, helloworld // string to print mov X2, #13 // length of our string mov X16, #4 // MacOS write system call svc 0 // Call linux to output the string // Setup the parameters to exit the program // and then call Linux to do it. mov X0, #0 // Use 0 return code mov X16, #1 // Service command code 1 terminates this program svc 0 // Call MacOS to terminate the program helloworld: .ascii "Hello World!\n" Assembling and linking commands: as -o hw.o hw.s && ld -macos_version_min 14.0.0 -o hw hw.o -lSystem -syslibroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.2.sdk -e _start -arch arm64 Resulting file sizes: -rwxr-xr-x 1 <uid> <gid> 16K Jun 18 21:23 hw -rw-r--r-- 1 <uid> <gid> 440B Jun 18 21:23 hw.o -rw-r--r-- 1 <uid> <gid> 862B Jun 18 21:21 hw.s 0 - https://smist08.wordpress.com/2021/01/08/apple-m1-assembly-language-hello-world/ https://smist08.wordpress.com/2021/01/08/apple-m1-assembly-l...