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-I <dir>: look for imported C headers there too (an SDK's headers)

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Nexoniarz 2026-10-11 02:20:42 +02:00
commit 5f2ba99f2d
2 changed files with 6 additions and 2 deletions
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2
docs/en/cheatsheet.md
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@ -12,7 +12,7 @@ Everything in Finch on one page. For explanations, see the [guides](../../README
|---|---| |---|---|
| `finch run file.fch [args…]` | compile and run (args go to the program) | | `finch run file.fch [args…]` | compile and run (args go to the program) |
| `finch build file.fch [-o name]` | make a program (`name.exe` on Windows) | | `finch build file.fch [-o name]` | make a program (`name.exe` on Windows) |
| `finch build file.fch --shared` | make a library (`libfile.so`, `file.dll`) that a C program loads; its `export fn`s are its C functions (numbers, bool, char, pointers) | | `finch build file.fch --shared [-I dir]` | make a library (`libfile.so`, `file.dll`) that a C program loads; its `export fn`s are its C functions (numbers, bool, char, pointers) |
| `finch ir file.fch` | print the LLVM IR | | `finch ir file.fch` | print the LLVM IR |
| `finch lsp` | the language server (editors use it) | | `finch lsp` | the language server (editors use it) |
| `finch version` | version | | `finch version` | version |

6
src/main.cpp
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@ -42,6 +42,7 @@ static void usage() {
" finch lsp the language server, for editors (VS Code, Kate, ...)\n" " finch lsp the language server, for editors (VS Code, Kate, ...)\n"
"\n" "\n"
" -l <lib> link a C library, same as link \"lib\" in the file\n" " -l <lib> link a C library, same as link \"lib\" in the file\n"
" -I <dir> also look for imported C headers in dir\n"
" --shared (build) a library with no main: lib<name>.so / <name>.dll, its export fn's callable from C\n" " --shared (build) a library with no main: lib<name>.so / <name>.dll, its export fn's callable from C\n"
" --target <name> build for another system: windows, linux, arm64 (Linux), macos,\n" " --target <name> build for another system: windows, linux, arm64 (Linux), macos,\n"
" or an LLVM triple\n" " or an LLVM triple\n"
@ -281,7 +282,7 @@ int main(int argc, char **argv) {
std::string cmd = argv[1], file = argv[2]; std::string cmd = argv[1], file = argv[2];
if (cmd != "run" && cmd != "build" && cmd != "ir") usage(); if (cmd != "run" && cmd != "build" && cmd != "ir") usage();
std::string out = stem(file); std::string out = stem(file);
std::vector<std::string> libs, programArgs; std::vector<std::string> libs, programArgs, includeDirs;
std::string targetName; std::string targetName;
bool optimizeCode = true, debug = false, outGiven = false; bool optimizeCode = true, debug = false, outGiven = false;
for (int i = 3; i < argc; i++) { for (int i = 3; i < argc; i++) {
@ -292,6 +293,8 @@ int main(int argc, char **argv) {
else if (a == "-O0") optimizeCode = false; else if (a == "-O0") optimizeCode = false;
else if (a == "-g") debug = true; else if (a == "-g") debug = true;
else if (a == "--shared" && cmd == "build") g_target.shared = true; else if (a == "--shared" && cmd == "build") g_target.shared = true;
else if (a == "-I" && i + 1 < argc) includeDirs.push_back(argv[++i]);
else if (a.rfind("-I", 0) == 0 && a.size() > 2) includeDirs.push_back(a.substr(2));
else if (a == "-l" && i + 1 < argc) libs.push_back(argv[++i]); else if (a == "-l" && i + 1 < argc) libs.push_back(argv[++i]);
else if (a.rfind("-l", 0) == 0 && a.size() > 2) libs.push_back(a.substr(2)); else if (a.rfind("-l", 0) == 0 && a.size() > 2) libs.push_back(a.substr(2));
else if (cmd == "run") programArgs.push_back(a); else if (cmd == "run") programArgs.push_back(a);
@ -316,6 +319,7 @@ int main(int argc, char **argv) {
} }
if (std::find(dirs.begin(), dirs.end(), dirOf(p.path)) == dirs.end()) dirs.push_back(dirOf(p.path)); if (std::find(dirs.begin(), dirs.end(), dirOf(p.path)) == dirs.end()) dirs.push_back(dirOf(p.path));
} }
dirs.insert(dirs.end(), includeDirs.begin(), includeDirs.end()); // -I: after the files' own folders
CImports c = importHeaders(allImports, dirs); CImports c = importHeaders(allImports, dirs);
LLVMContext ctx; LLVMContext ctx;
TargetMachine *tm = targetMachine(); TargetMachine *tm = targetMachine();