Main framework compiles on Linux

GRDB/Core/Database.swift

@@ -304,7 +304,7 @@ extension Database {
                 let db = Unmanaged<Database>.fromOpaque(dbPointer!).takeUnretainedValue()
                 db.configuration.trace!(sql)
             }, dbPointer)
-        #else
+        #elseif !os(Linux)
             if #available(iOS 10.0, OSX 10.12, watchOS 3.0, *) {
                 sqlite3_trace_v2(sqliteConnection, UInt32(SQLITE_TRACE_STMT), { (mask, dbPointer, stmt, unexpandedSQL) -> Int32 in
                     guard let stmt = stmt else { return SQLITE_OK }
@@ -322,6 +322,12 @@ extension Database {
                     db.configuration.trace!(sql)
                 }, dbPointer)
             }
+        #else
+        sqlite3_trace(sqliteConnection, { (dbPointer, sql) in
+                                            guard let sql = sql.map({ String(cString: $0) }) else { return }
+                                            let db = Unmanaged<Database>.fromOpaque(dbPointer!).takeUnretainedValue()
+                                            db.configuration.trace!(sql)
+                                        }, dbPointer)
         #endif
     }
 

GRDB/Core/StatementAuthorizer.swift

@@ -1,3 +1,6 @@
+#if os(Linux)
+    import Glibc
+#endif
 #if SWIFT_PACKAGE
     import CSQLite
 #elseif !GRDBCUSTOMSQLITE && !GRDBCIPHER

GRDB/Core/Support/CoreGraphics/CGFloat.swift

@@ -1,3 +1,4 @@
+#if !os(Linux)
 import CoreGraphics
 
 /// CGFloat adopts DatabaseValueConvertible
@@ -16,3 +17,4 @@ extension CGFloat : DatabaseValueConvertible {
         return CGFloat(double)
     }
 }
+#endif

GRDB/Core/Support/Foundation/Date.swift

@@ -5,6 +5,7 @@ import Foundation
     import SQLite3
 #endif
 
+#if !os(Linux)
 /// NSDate is stored in the database using the format
 /// "yyyy-MM-dd HH:mm:ss.SSS", in the UTC time zone.
 extension NSDate : DatabaseValueConvertible {
@@ -31,6 +32,7 @@ extension NSDate : DatabaseValueConvertible {
         return cast(date)
     }
 }
+#endif
 
 /// Date is stored in the database using the format
 /// "yyyy-MM-dd HH:mm:ss.SSS", in the UTC time zone.

GRDB/Core/Support/Foundation/NSData.swift

@@ -1,3 +1,4 @@
+#if !os(Linux)
 import Foundation
 
 /// NSData is convertible to and from DatabaseValue.
@@ -17,3 +18,4 @@ extension NSData : DatabaseValueConvertible {
         return cast(data)
     }
 }
+#endif

GRDB/Core/Support/Foundation/NSNumber.swift

@@ -1,3 +1,4 @@
+#if !os(Linux)
 import Foundation
 
 private let integerRoundingBehavior = NSDecimalNumberHandler(roundingMode: .plain, scale: 0, raiseOnExactness: false, raiseOnOverflow: false, raiseOnUnderflow: false, raiseOnDivideByZero: false)
@@ -65,3 +66,4 @@ extension NSNumber : DatabaseValueConvertible {
         }
     }
 }
+#endif

GRDB/Core/Support/Foundation/NSString.swift

@@ -1,3 +1,4 @@
+#if !os(Linux)
 import Foundation
 
 /// NSString adopts DatabaseValueConvertible
@@ -16,3 +17,4 @@ extension NSString : DatabaseValueConvertible {
         return self.init(string: string)
     }
 }
+#endif

GRDB/Core/Support/Foundation/URL.swift

@@ -1,5 +1,6 @@
 import Foundation
 
+#if !os(Linux)
 /// NSURL stores its absoluteString in the database.
 extension NSURL : DatabaseValueConvertible {
 
@@ -17,6 +18,7 @@ extension NSURL : DatabaseValueConvertible {
         return cast(URL(string: string))
     }
 }
+#endif
 
 /// URL stores its absoluteString in the database.
 extension URL : DatabaseValueConvertible { }

GRDB/Core/Support/Foundation/UUID.swift

@@ -1,5 +1,6 @@
 import Foundation
 
+#if !os(Linux)
 /// NSUUID adopts DatabaseValueConvertible
 extension NSUUID : DatabaseValueConvertible {
 
@@ -18,8 +19,9 @@ extension NSUUID : DatabaseValueConvertible {
             return nil
         }
         return self.init(uuidBytes: data.bytes.assumingMemoryBound(to: UInt8.self))
-    }
+     }
 }
+#endif
 
 /// UUID adopts DatabaseValueConvertible
 extension UUID : DatabaseValueConvertible { }