Skip to content

chore: fix iOS build #41

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
siddarthkay merged 1 commit into from
Dec 24, 2025
Merged

chore: fix iOS build #41

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
45 changes: 31 additions & 14 deletions sds.nimble
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
mode = ScriptMode.Verbose

import strutils
import strutils, os

# Package
version = "0.1.0"
Expand Down Expand Up @@ -114,35 +114,52 @@ proc buildMobileIOS(srcDir = ".", sdkPath = "") =
echo "Building iOS libsds library"

let outDir = "build"
let nimcacheDir = outDir & "/nimcache"
if not dirExists outDir:
mkDir outDir

if sdkPath.len == 0:
quit "Error: Xcode/iOS SDK not found"

# The output static library
let cFile = outDir & "/nimcache/@mlibsds.nim.c"
let oFile = outDir & "/libsds.o"
let aFile = outDir & "/libsds.a"
let aFileTmp = outDir & "/libsds_tmp.a"
let arch = getArch()

# 1) Generate C sources from Nim (no linking)
# Use unique symbol prefix to avoid conflicts with other Nim libraries
exec "nim c" &
" --nimcache:build/nimcache --os:ios --cpu:arm64" &
" --nimcache:" & nimcacheDir & " --os:ios --cpu:" & arch &
" --compileOnly:on" &
" --noMain --mm:refc" &
" --noMain --mm:orc" &
Comment thread
siddarthkay marked this conversation as resolved.
" --threads:on --opt:size --header" &
" --nimMainPrefix:libsds --skipParentCfg:on" &
" --cc:clang" &
" --out:" & cFile & " " &
srcDir & "/libsds.nim"
" -d:useMalloc" &
" " & srcDir & "/libsds.nim"

exec "clang -arch arm64" &
" -isysroot " & sdkPath &
# 2) Compile all generated C files to object files with hidden visibility
# This prevents symbol conflicts with other Nim libraries (e.g., libnim_status_client)
let clangFlags = "-arch " & arch & " -isysroot " & sdkPath &
" -I./vendor/nimbus-build-system/vendor/Nim/lib/" &
" -fembed-bitcode -c " & cFile &
" -o " & oFile

exec "ar rcs " & aFile & " " & oFile
" -fembed-bitcode -miphoneos-version-min=16.0 -O2" &
" -fvisibility=hidden"

var objectFiles: seq[string] = @[]
for cFile in listFiles(nimcacheDir):
if cFile.endsWith(".c"):
let oFile = cFile.changeFileExt("o")
exec "clang " & clangFlags & " -c " & cFile & " -o " & oFile
objectFiles.add(oFile)

# 3) Create static library from all object files
exec "ar rcs " & aFileTmp & " " & objectFiles.join(" ")

# 4) Use libtool to localize all non-public symbols
# Keep only Sds* functions as global, hide everything else to prevent conflicts
# with nim runtime symbols from libnim_status_client
let keepSymbols = "_Sds*:_libsdsNimMain:_libsdsDatInit*:_libsdsInit*:_NimMainModule__libsds*"
exec "xcrun libtool -static -o " & aFile & " " & aFileTmp &
" -exported_symbols_list /dev/stdin <<< '" & keepSymbols & "' 2>/dev/null || cp " & aFileTmp & " " & aFile

echo "✔ iOS library created: " & aFile

Expand Down