Improve nob on linux and fix linux static link api.

CHANGELOG.txt

@@ -70,6 +70,9 @@ Compiler:
 - Improved "Libraries" section in documentation.
 - Add new examples into 'how-to' showing how to do static and dynamic linking of external
   libraries.
+- Nob on linux tries to fallback to `llvm-config` in case `llvm-config-X` wasnt found.
+- Add LLVM version check on linux.
+- Add more search paths for compiler dependencies on linux.
 
 Modules:
 - Add math module.

doctor.bl

@@ -24,8 +24,8 @@ MISC :: [_]Test.{
 	Test.{ name = "how-to/gunner",             kind = TestKind.BUILD, platform = Platform.WINDOWS },
 	Test.{ name = "how-to/glwindow_gunner",    kind = TestKind.BUILD, platform = Platform.WINDOWS },
 	Test.{ name = "how-to/glwindow_creation",  kind = TestKind.BUILD, platform = Platform.WINDOWS },
-	Test.{ name = "how-to/static_library",     kind = TestKind.BUILD, platform = Platform.WINDOWS },
-	Test.{ name = "how-to/dynamic_library",    kind = TestKind.BUILD, platform = Platform.WINDOWS },
+	Test.{ name = "how-to/static_library",     kind = TestKind.BUILD },
+	Test.{ name = "how-to/dynamic_library",    kind = TestKind.BUILD },
 	Test.{ name = "tests/build_api_test",      kind = TestKind.BUILD },
 	Test.{ name = "tests/library",             kind = TestKind.BUILD, platform = Platform.WINDOWS },
 };

lib/bl/api/build/build.bl

@@ -416,7 +416,7 @@ link_static_library :: fn (target: *Target, name: string_view) {
 		}
 
 		LINUX, DARWIN {
-			append_linker_options(target, tprint("-llib%.a", name));
+			append_linker_options(target, tprint("lib%.a", name));
 		}
 
 		default { panic("Unsupported target for static linking!"); }

src/nob/find_llvm.c

@@ -46,13 +46,22 @@ void find_llvm(void) {
 	}
 #endif
 
+	// Try llvm-config-N
 	if (!strlen(llvm_config)) {
 		cmd_append(&cmd, SHELL, "command -v llvm-config-" STR(LLVM_REQUIRED) " 2>/dev/null");
 		cmd_run_sync_read_and_reset(&cmd, &sb);
 		llvm_config = trim_and_dup(sb);
 		sb.count    = 0;
 	}
 
+	// Try llvm-config
+	if (!strlen(llvm_config)) {
+		cmd_append(&cmd, SHELL, "command -v llvm-config 2>/dev/null");
+		cmd_run_sync_read_and_reset(&cmd, &sb);
+		llvm_config = trim_and_dup(sb);
+		sb.count    = 0;
+	}
+
 	if (!strlen(llvm_config)) {
 		nob_log(NOB_ERROR,
 		        "Unable to find 'llvm-config-" STR(LLVM_REQUIRED) "'. LLVM might not be installed on your system, it's missing from PATH or you have incorrect version. Expected LLVM version " STR(LLVM_REQUIRED) ".");
@@ -77,6 +86,19 @@ void find_llvm(void) {
 	if (sb.count == 0) exit(1);
 	LLVM_VERSION = trim_and_dup(sb);
 	sb.count     = 0;
+
+	// Check the version
+	int llvm_major, llvm_minor, llvm_patch;
+	if (sscanf(LLVM_VERSION, "%d.%d.%d", &llvm_major, &llvm_minor, &llvm_patch) != 3) {
+		nob_log(NOB_ERROR, "Unable to parse LLVM version '%s'.", LLVM_VERSION);
+		exit(1);
+	}
+
+	if (llvm_major != LLVM_REQUIRED) {
+		nob_log(NOB_ERROR, "Unsupported LLVM version '%s', expected is %d.", LLVM_VERSION, LLVM_REQUIRED);
+		exit(1);
+	}
+
 	nob_log(NOB_INFO, "Using LLVM %s.", LLVM_VERSION);
 
 	// include dir
@@ -93,7 +115,6 @@ void find_llvm(void) {
 	if (sb.count == 0) exit(1);
 	LLVM_LIBS = trim_and_dup(sb);
 	sb.count  = 0;
-	// nob_log(NOB_INFO, "LLVM " STR(LLVM_REQUIRED) " libs: %s", LLVM_LIBS);
 
 	// libdir
 	cmd_append(&cmd, llvm_config, "--libdir");

src/nob/nob.c

@@ -47,50 +47,50 @@ void blc(void) {
 	nob_log(NOB_INFO, temp_sprintf("Compiling blc-" BL_VERSION " (%s).", config_name));
 
 	const char *src[] = {
-		"./src/arena.c",
-		"./src/asm_writer.c",
-		"./src/assembly.c",
-		"./src/ast_printer.c",
-		"./src/ast.c",
-		"./src/bc_writer.c",
-		"./src/bldebug.c",
-		"./src/blmemory.c",
-		"./src/build_api.c",
-		"./src/builder.c",
-		"./src/common.c",
-		"./src/conf.c",
-		"./src/docs.c",
-		"./src/file_loader.c",
-		"./src/intrinsic.c",
-		"./src/ir_opt.c",
-		"./src/ir.c",
-		"./src/lexer.c",
-		"./src/linker.c",
-		"./src/lld_ld.c",
-		"./src/lld_link.c",
-		"./src/llvm_api.cpp",
-		"./src/main.c",
-		"./src/mir_printer.c",
-		"./src/mir_writer.c",
-		"./src/mir.c",
-		"./src/native_bin.c",
-		"./src/obj_writer.c",
-		"./src/parser.c",
-		"./src/scope_printer.c",
-		"./src/scope.c",
-		"./src/setup.c",
-		"./src/table.c",
-		"./src/threading.c",
-		"./src/tinycthread.c",
-		"./src/token_printer.c",
-		"./src/tokens.c",
-		"./src/unit.c",
-		"./src/vm_runner.c",
-		"./src/vm.c",
-		"./src/vmdbg.c",
-		"./src/x86_64.c",
+	    "./src/arena.c",
+	    "./src/asm_writer.c",
+	    "./src/assembly.c",
+	    "./src/ast_printer.c",
+	    "./src/ast.c",
+	    "./src/bc_writer.c",
+	    "./src/bldebug.c",
+	    "./src/blmemory.c",
+	    "./src/build_api.c",
+	    "./src/builder.c",
+	    "./src/common.c",
+	    "./src/conf.c",
+	    "./src/docs.c",
+	    "./src/file_loader.c",
+	    "./src/intrinsic.c",
+	    "./src/ir_opt.c",
+	    "./src/ir.c",
+	    "./src/lexer.c",
+	    "./src/linker.c",
+	    "./src/lld_ld.c",
+	    "./src/lld_link.c",
+	    "./src/llvm_api.cpp",
+	    "./src/main.c",
+	    "./src/mir_printer.c",
+	    "./src/mir_writer.c",
+	    "./src/mir.c",
+	    "./src/native_bin.c",
+	    "./src/obj_writer.c",
+	    "./src/parser.c",
+	    "./src/scope_printer.c",
+	    "./src/scope.c",
+	    "./src/setup.c",
+	    "./src/table.c",
+	    "./src/threading.c",
+	    "./src/tinycthread.c",
+	    "./src/token_printer.c",
+	    "./src/tokens.c",
+	    "./src/unit.c",
+	    "./src/vm_runner.c",
+	    "./src/vm.c",
+	    "./src/vmdbg.c",
+	    "./src/x86_64.c",
 #if BL_RPMALLOC_ENABLE
-		"./deps/rpmalloc-" RPMALLOC_VERSION "/rpmalloc/rpmalloc.c",
+	    "./deps/rpmalloc-" RPMALLOC_VERSION "/rpmalloc/rpmalloc.c",
 #endif
 	};
 
@@ -312,30 +312,35 @@ void cleanup(void) {
 }
 
 #ifdef __linux__
+
 void find_deps(void) {
-	LIBZ = shell("find /usr/lib /usr/local/lib -name \"libz.a\" -print -quit 2>/dev/null");
+
+#define LIB_PATH "/lib /usr/lib /usr/local/lib /lib64 /usr/lib64 /usr/lib/x86_64-linux-gnu"
+
+	LIBZ = shell("find " LIB_PATH " -name \"libz.a\" -print -quit 2>/dev/null");
 	if (!strok(LIBZ)) {
-		nob_log(NOB_ERROR, "Unable to find 'libz'.");
+		nob_log(NOB_ERROR, "Unable to find 'libz.a' in non of following paths: '" LIB_PATH "'.");
 		exit(1);
 	}
 	nob_log(NOB_INFO, "Using 'libz' '%s'.", LIBZ);
 
-	LIBZSTD = shell("find /usr/lib /usr/local/lib -name \"libzstd.a\" -print -quit 2>/dev/null");
+	LIBZSTD = shell("find " LIB_PATH " -name \"libzstd.a\" -print -quit 2>/dev/null");
 	if (!strok(LIBZSTD)) {
-		nob_log(NOB_ERROR, "Unable to find 'libzstd'.");
+		nob_log(NOB_ERROR, "Unable to find 'libzstd.a' in non of following paths: '" LIB_PATH "'.");
 		exit(1);
 	}
 	nob_log(NOB_INFO, "Using 'libzstd' '%s'.", LIBZSTD);
 
-	LIBTINFO = shell("find /usr/lib /usr/local/lib -name \"libtinfo.a\" -print -quit 2>/dev/null");
+	LIBTINFO = shell("find " LIB_PATH " -name \"libtinfo.a\" -print -quit 2>/dev/null");
 	if (!strok(LIBTINFO)) {
-		nob_log(NOB_ERROR, "Unable to find 'libtinfo'.");
+		nob_log(NOB_ERROR, "Unable to find 'libtinfo.a' in non of following paths: '" LIB_PATH "'.");
 		exit(1);
 	}
 	nob_log(NOB_INFO, "Using 'libtinfo' '%s'.", LIBTINFO);
 }
 
 #elif __APPLE__
+
 void find_deps(void) {
 	if (!strok(shell("which brew"))) {
 		nob_log(NOB_ERROR, "Homebrew package manager not found. We currently require dependencies installed using homebrew because in some cases the MacOS Command Line tools does not provide static libraries.");