fea: add support for Macos AMR64 platform

INSTALL.md

@@ -107,7 +107,7 @@ export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$IBM_DB_HOME/lib
 cd .../go_ibm_db/installer
 source setenv.sh
 ```
-## <a name="insmac"></a> 3. Go_ibm_db Installation on MacOS.
+## <a name="insmac"></a> 3. Go_ibm_db Installation on MacOS x64 and arm64 Systems
 
 ### 3.1 Install GoLang for Mac
 
@@ -133,14 +133,23 @@ It's Done.
 1. mkdir goapp
 2. cd goapp
 3. git clone https://github.com/ibmdb/go_ibm_db/
+4. cd go_ibm_db/installer
+5. go run setup.go
 ```
 
 ### 3.3 Download clidriver
 
-Download clidriver in your system, use below command:
-go to installer folder where go_ibm_db is downloaded in your system 
+To download clidriver in your system, use below command:
+Cd to installer folder where go_ibm_db is downloaded in your system 
 (Example: /home/uname/go/src/github.com/ibmdb/go_ibm_db/installer or /home/uname/goapp/go_ibm_db/installer 
-where uname is the username) and run setup.go file (go run setup.go)
+where uname is the username) and run setup.go file (`go run setup.go`)
+
+#### 3.3.1 downloaded driver version
+
+* Latest version of clidriver available for MacOS x64 system is: v11.5.9
+* By default on Intel Chip Macos, clidriver of v11.5.9 will get downloaded.
+* First version of clidriver supported on MacOS ARM64 system is: v12.1.0
+* On MacOS M1/M2/M3 Chip system, by default clidriver of v12.1.0 will get downloaded.
 
 
 ### 3.4 Set environment variables to clidriver directory path
@@ -162,6 +171,16 @@ cd .../go_ibm_db/installer
 source setenv.sh
 ```
 
+#### 3.4.3 Disable SIP or create symlink of libdb2 on MacARM64 sysem
+
+* New MacOS systems comes with System Integrity Protection(SIP) enabled which discards setting of DYLD_LIBRARY_PATH env variable
+* Disable SIP if your Go app gives error that: file `libdb2.dylib` not found.
+* If you can not disable SIP, create softlink of `.../clidriver/lib/libdb2.dylib` file under your applications home directory.
+```
+    ln -s .../clidriver/lib/libdb2.dylib libdb2.dylib
+```
+* If you see `libdb2.dylib` file under `go_ibm_db` directory, you can copy it too in your app root directory.
+
 ## <a name="inswin"></a> 4. Go_ibm_db Installation on Windows.
 
 ### 4.1 Install GoLang for Windows
@@ -216,39 +235,3 @@ It's Done.
 
 4. Download platform specific clidriver from https://public.dhe.ibm.com/ibmdl/export/pub/software/data/db2/drivers/odbc_cli/ , untar/unzip it and set `IBM_DB_HOME` environmental variable to full path of extracted 'clidriver' directory, for example if clidriver is extracted as: `/home/mysystem/clidriver`, then set system level environment variable `IBM_DB_HOME=/home/mysystem/clidriver`.
 
-
-
-## <a name="m1chip"></a> 5. Steps to install ibm_db on MacOS M1/M2 Chip system (arm64 architecture)
-**Warning:** If you use the ARM version of homebrew (as recommended for M1/M2 chip systems) you will get the following error message:
-```
-$ brew install gcc-12
-Error: Cannot install in Homebrew on ARM processor in Intel default prefix (/usr/local)!
-Please create a new installation in /opt/homebrew using one of the
-"Alternative Installs" from:
-  https://docs.brew.sh/Installation
-You can migrate your previously installed formula list with:
-  brew bundle dump
-```
-Install `gcc@12` using homebrew `(note: the x86_64 version of homebrew is needed for this, not the recommended ARM based homebrew)`. The clearest instructions on how to install and use the `x86_64` version of `homebrew` is by following below steps:
-*	My arm64/M1 brew is installed here:
-```
-	$ which brew
-	/opt/homebrew/bin/brew
-```
-*	Step 1. Install x86_64 brew under /usr/local/bin/brew
-	`arch -x86_64 /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"`
-*	Step 2. Create an alias for the x86_64 brew
-	I added this to my ~/.bashrc as below:
-```
-	# brew hack for x86_64
-	alias brew64='arch -x86_64 /usr/local/bin/brew'
-```
-* Then install gcc@12 using the x86_64 homebrew:
-```
-	brew64 install gcc@12
-```
-* Now find location of `lib/gcc/12/libstdc++.6.dylib` file in your system. It should be inside `/usr/local/homebrew/lib/gcc/12` or `/usr/local/lib/gcc/12` or `/usr/local/homebrew/Cellar/gcc@12/12.2.0/lib/gcc/12` or something similar. You need to find the correct path.
-Suppose path of gcc lib is `/usr/local/homebrew/lib/gcc/12`. Then update your .bashrc/.zshrc file with below line
-```
-export DYLD_LIBRARY_PATH=/usr/local/homebrew/lib/gcc/12:$DYLD_LIBRARY_PATH
-```

README.md

@@ -23,14 +23,17 @@ yum install go git tar libpam
 
 * **SQL1598N Error** - It is expected in absence of valid db2connect license. Please click [here](#Licenserequirements) and read instructions about license requirement and how to apply the license.
 
+* go_ibm_db@v0.5.1 is the last version to download v11.5.9 clidriver by defualt and first version to support MacOS arm64 platform using v12.1.0 clidriver.
+* There is no MacOS Intel Chip clidriver from v12.1.0 onwards.
+
 ## How to Install in Windows
 
 - You may install go_ibm_db using either of below commands
 
 ```
 go get -d github.com/ibmdb/go_ibm_db
 go install github.com/ibmdb/go_ibm_db/installer@latest
-go install github.com/ibmdb/go_ibm_db/installer@v0.5.0
+go install github.com/ibmdb/go_ibm_db/installer@v0.5.1
 ```
 
 - You can optionally specify a specific cli driver by setting the IBM_DB_DOWNLOAD_URL environment variable
@@ -74,7 +77,7 @@ setenvwin.bat
 ```
 go get -d github.com/ibmdb/go_ibm_db
 go install github.com/ibmdb/go_ibm_db/installer@latest
-go install github.com/ibmdb/go_ibm_db/installer@v0.5.0
+go install github.com/ibmdb/go_ibm_db/installer@v0.5.1
 ```
 
 - You can optionally specify a specific cli driver by setting the IBM_DB_DOWNLOAD_URL environment
@@ -127,15 +130,15 @@ source setenv.sh
 ```
 yum install -y gcc git go wget tar xz make gcc-c++
 cd /root
-curl -OL https://golang.org/dl/go1.23.1.linux-amd64.tar.gz
-tar -C /usr/local -xzf go1.23.1.linux-amd64.tar.gz
+curl -OL https://golang.org/dl/go1.23.4.linux-amd64.tar.gz
+tar -C /usr/local -xzf go1.23.4.linux-amd64.tar.gz
 
 rm /usr/bin/go
 rm /usr/bin/gofmt
 cp /usr/local/go/bin/go /usr/bin/
 cp /usr/local/go/bin/gofmt /usr/bin/
 
-go install github.com/ibmdb/go_ibm_db/installer@v0.5.0
+go install github.com/ibmdb/go_ibm_db/installer@v0.5.1
 or 
 go install github.com/ibmdb/go_ibm_db/installer@latest
 ```

installer/setup.go

@@ -66,14 +66,20 @@ func Unzipping(sourcefile string, targetDirectory string) {
 }
 
 func linux_untar(clidriver string, targetDirectory string) error {
-	fmt.Printf("Extracting with tar -xvzf %s -C %s\n", clidriver, targetDirectory)
-	out, err := exec.Command("tar", "xvzf", "./../../"+clidriver, "-C", targetDirectory).Output()
+	fmt.Printf("Extracting with tar -xzf %s -C %s\n", clidriver, targetDirectory)
+	out, err := exec.Command("tar", "xzf", "./../../" + clidriver, "-C", targetDirectory).Output()
 
 	fmt.Println(string(out))
 	if err != nil {
 		fmt.Println("Error while running tar: " + err.Error())
 		return err
 	}
+	if runtime.GOOS == "darwin" {
+        // Create symlinks for libdb2
+        _, _ = exec.Command("ln", "-s", targetDirectory + "/clidriver/lib/libdb2.dylib", targetDirectory + "/libdb2.dylib").Output()
+        _, _ = exec.Command("ln", "-s", targetDirectory + "/clidriver/lib/libdb2.dylib", targetDirectory + "/go_ibm_db/libdb2.dylib").Output()
+        _, _ = exec.Command("ln", "-s", targetDirectory + "/clidriver/lib/libdb2.dylib", targetDirectory + "/go_ibm_db/testdata/libdb2.dylib").Output()
+    }
 
 	return nil
 }
@@ -134,42 +140,55 @@ func checkincludepath(includepath string) bool {
 }
 
 func main() {
-	var target, cliFileName string
-	var unpackageType int
-	var err11 error
-	var out []byte
+    var target, cliFileName string
+    var unpackageType int
+    var err11 error
+    var out []byte
 
-	fmt.Println("NOTE: Environment variable DB2HOME name is changed to IBM_DB_HOME.")
+    fmt.Println("os =",runtime.GOOS, ", processor =", runtime.GOARCH)
+    path, ok := os.LookupEnv("DB2HOME")
+    if ok {
+        fmt.Println("NOTE: Environment variable DB2HOME name is changed to IBM_DB_HOME.")
+        fmt.Println("DB2HOME environment variable is set to", path)
+    }
 
-	out, err11 = exec.Command("db2cli", "validate").Output()
-	if err11 != nil {
-		_, ok := os.LookupEnv("IBM_DB_HOME")
-		if !ok {
-			if runtime.GOOS == "windows" {
-				fmt.Println("Please set IBM_DB_HOME add this path to PATH environment variable after clidriver installed")
-			} else {
-				fmt.Println("Please set IBM_DB_HOME, CGO_CFLAGS, CGO_LDFLAGS and LD_LIBRARY_PATH or DYLD_LIBRARY_PATH environment variables after clidriver installed")
-			}
-		}
-	} else {
-		path, ok := os.LookupEnv("IBM_DB_HOME")
-		if !ok {
-			//set IBM_DB_HOME
-			getinstalledpath(string(out))
-			os.Exit(1)
-		} else {
-			fmt.Println("clidriver folder exists in the path....", path)
-			if checkincludepath(path) {
-				os.Exit(1)
-			}
-		}
-	}
+    out, err11 = exec.Command("db2cli", "validate").Output()
+    if err11 != nil {
+        _, ok := os.LookupEnv("IBM_DB_HOME")
+        if !ok {
+        if runtime.GOOS == "windows" {
+                fmt.Println("Please set IBM_DB_HOME and add %IBM_DB_HOME%/bin to PATH and %IBM_DB_HOME%/lib to LIB environment variables after clidriver installation")
+            } else if runtime.GOOS == "aix" {
+                fmt.Println("Please set IBM_DB_HOME, CGO_CFLAGS, CGO_LDFLAGS and LIBPATH environment variables after clidriver installation")
+            } else if runtime.GOOS == "darwin" {
+                fmt.Println("Please set IBM_DB_HOME, CGO_CFLAGS, CGO_LDFLAGS and DYLD_LIBRARY_PATH environment variables after clidriver installation")
+            } else {
+                fmt.Println("Please set IBM_DB_HOME, CGO_CFLAGS, CGO_LDFLAGS and LD_LIBRARY_PATH environment variables after clidriver installation")
+            }
+        }
+    } else {
+        path, ok := os.LookupEnv("IBM_DB_HOME")
+        if !ok {
+            //set IBM_DB_HOME
+            getinstalledpath(string(out))
+            os.Exit(1)
+        } else {
+            fmt.Println("clidriver folder exists in the path....", path)
+            if checkincludepath(path) {
+                os.Exit(1)
+            }
+        }
+    }
 
-	if len(os.Args) == 2 {
-		target = os.Args[1]
-	} else {
-		target = "./../.."
-	}
+    _, setupFile, _, ok := runtime.Caller(0)
+    if len(os.Args) == 2 {
+        target = os.Args[1]
+    } else if ok {
+        target = filepath.Dir(setupFile) + "/../.."
+        target, _ = filepath.Abs(target)
+    } else {
+        target = "./../.."
+    }
 
 	if _, err1 := os.Stat(target + "/clidriver"); !os.IsNotExist(err1) {
 		fmt.Println("clidriver folder exists in the path")
@@ -196,7 +215,6 @@ func main() {
 		} else {
 			cliFileName = "nt32_odbc_cli.zip"
 		}
-		fmt.Printf("windows\n")
 		fmt.Println(cliFileName)
 	} else if runtime.GOOS == "linux" {
 		unpackageType = 2
@@ -227,7 +245,6 @@ func main() {
 				cliFileName = "s390_odbc_cli.tar.gz"
 			}
 		}
-		fmt.Printf("linux\n")
 		fmt.Println(cliFileName)
 	} else if runtime.GOOS == "aix" {
 		unpackageType = 3
@@ -237,7 +254,6 @@ func main() {
 		} else {
 			cliFileName = "aix32_odbc_cli.tar.gz"
 		}
-		fmt.Printf("aix\n")
 		fmt.Println(cliFileName)
 	} else if runtime.GOOS == "sunos" {
 		unpackageType = 2
@@ -256,19 +272,21 @@ func main() {
 				cliFileName = "sun32_odbc_cli.tar.gz"
 			}
 		}
-		fmt.Printf("Sunos\n")
 		fmt.Printf(cliFileName)
 	} else if runtime.GOOS == "darwin" {
-		unpackageType = 2
-		const wordsize = 32 << (^uint(0) >> 32 & 1)
-		if wordsize == 64 {
-			cliFileName = "macos64_odbc_cli.tar.gz"
-		}
-		fmt.Println("darwin")
-	} else {
-		fmt.Println("not known platform")
-		os.Exit(3)
-	}
+        unpackageType = 2
+        const wordsize = 32 << (^uint(0) >> 32 & 1)
+        if wordsize == 64 {
+            if runtime.GOARCH == "arm64" {
+                cliFileName = "macarm64_odbc_cli.tar.gz"
+            } else {
+                cliFileName = "macos64_odbc_cli.tar.gz"
+            }
+        }
+    } else {
+        fmt.Println("Error: Unsupported platform!")
+        os.Exit(3)
+    }
 	fileUrl := downloadUrl(cliFileName)
 	fmt.Println("Downloading " + fileUrl)
 	err := downloadFile(cliFileName, fileUrl)
@@ -290,7 +308,22 @@ func main() {
 func downloadUrl(cliFileName string) string {
 	downloadUrl, downloadUrlFound := os.LookupEnv("IBM_DB_DOWNLOAD_URL")
 	if !downloadUrlFound {
-		downloadUrl = "https://public.dhe.ibm.com/ibmdl/export/pub/software/data/db2/drivers/odbc_cli/" + cliFileName
+	    clidriverVersion, ok := os.LookupEnv("CLIDRIVER_DOWNLOAD_VERSION")
+        if ok {
+            if runtime.GOOS == "darwin" && runtime.GOARCH == "arm64" && strings.HasPrefix(strings.ToLower(clidriverVersion), "v11") {
+		        downloadUrl = "https://public.dhe.ibm.com/ibmdl/export/pub/software/data/db2/drivers/odbc_cli/" + cliFileName
+            } else if runtime.GOOS == "darwin" && runtime.GOARCH != "arm64" && strings.HasPrefix(strings.ToLower(clidriverVersion), "v12") {
+		        downloadUrl = "https://public.dhe.ibm.com/ibmdl/export/pub/software/data/db2/drivers/odbc_cli/" + cliFileName
+            } else {
+		        downloadUrl = "https://public.dhe.ibm.com/ibmdl/export/pub/software/data/db2/drivers/odbc_cli/" + clidriverVersion + "/" + cliFileName
+            }
+        } else {
+            if runtime.GOOS == "darwin" {
+		        downloadUrl = "https://public.dhe.ibm.com/ibmdl/export/pub/software/data/db2/drivers/odbc_cli/" + cliFileName
+            } else {
+		        downloadUrl = "https://public.dhe.ibm.com/ibmdl/export/pub/software/data/db2/drivers/odbc_cli/v11.5.9/" + cliFileName
+            }
+        }
 	}
 	return downloadUrl
 }