diff --git a/README.md b/README.md
index cc8e3f6..cd88e36 100644
--- a/README.md
+++ b/README.md
@@ -307,6 +307,40 @@ terminal. Linux: make sure your `~/.bashrc` / `~/.zshrc` sources
 `~/.phpvm/phpvm.sh`. Note that auto-switch never installs missing versions —
 it only switches between installed ones.
 
+### `ext install sqlsrv` / `pdo_sqlsrv` fails or won't connect
+
+This is **not** a phpvm bug. The PHP extension is only half of the stack — at
+runtime it also needs Microsoft's ODBC Driver for SQL Server, installed
+system-wide (one-off, outside phpvm). phpvm prints this note after install.
+
+- Windows: [Download the ODBC Driver](https://learn.microsoft.com/sql/connect/odbc/download-odbc-driver-for-sql-server)
+- Linux/macOS: [Install the ODBC driver](https://learn.microsoft.com/sql/connect/odbc/linux-mac/installing-the-microsoft-odbc-driver-for-sql-server)
+
+**Driver 18 vs 17 gotcha:** the PHP extension works with either, but Driver 18
+changed the `Encrypt` default from `no` to **`yes`** — so a connection that
+worked before now fails TLS against a local/dev SQL Server with a self-signed
+certificate. Either add `Encrypt=yes;TrustServerCertificate=yes` (or
+`Encrypt=no`) to your connection string, or install Driver 17. Driver 18 also
+requires SQL Server 2012+; older servers (2008/R2) need Driver 17.
+
+If the PECL build itself fails, it's a toolchain/driver-header gap on your
+machine (`unixODBC-devel` / ODBC SDK), not something phpvm can bundle.
+
+---
+
+## Known limitations
+
+- **PECL extensions on Windows are not hash-verified.** phpvm enforces SHA-256
+  on the PHP core zip and the Xdebug DLL, but `windows.php.net` does not publish
+  checksums for its [PECL release archives](https://windows.php.net/downloads/pecl/releases/),
+  so there is nothing to verify against. Downloads still go over HTTPS. If your
+  threat model requires it, build the extension from source instead of pulling
+  the prebuilt DLL. (Linux/macOS build extensions via PECL from source, so this
+  gap is Windows-only.)
+- **macOS is experimental.** Building PHP from source relies on Homebrew deps
+  and is exercised only in CI (non-gating). FPM user/group defaults assume
+  Linux. See the Compatibility table.
+
 ---
 
 ## Compatibility
diff --git a/linux/install.sh b/linux/install.sh
index 272f5ba..b7c271e 100644
--- a/linux/install.sh
+++ b/linux/install.sh
@@ -6,7 +6,7 @@
 
 set -e
 
-PHPVM_VERSION="1.12.1"
+PHPVM_VERSION="1.12.2"
 PHPVM_DIR="${PHPVM_DIR:-$HOME/.phpvm}"
 PHPVM_REPO="https://raw.githubusercontent.com/devhardiyanto/phpvm/main"
 
diff --git a/linux/phpvm.sh b/linux/phpvm.sh
index 3710472..f119ecc 100644
--- a/linux/phpvm.sh
+++ b/linux/phpvm.sh
@@ -10,7 +10,7 @@
 #    phpvm use 8.3.0
 # ==============================================================================
 
-PHPVM_VERSION="1.12.1"
+PHPVM_VERSION="1.12.2"
 PHPVM_DIR="${PHPVM_DIR:-$HOME/.phpvm}"
 PHPVM_VERSIONS="$PHPVM_DIR/versions"
 PHPVM_CURRENT="$PHPVM_DIR/current"
@@ -484,6 +484,15 @@ phpvm_install() {
         gettext_opt="--with-gettext=$(brew --prefix gettext)"
     fi
 
+    # gmp is keg-only on Homebrew AND ships no pkg-config (.pc) file, so the
+    # PKG_CONFIG_PATH prepend below can't find it — configure needs the explicit
+    # prefix or it fails with "GNU MP Library version 4.2 or greater required".
+    # Linux resolves --with-gmp from the system libgmp-dev, so leave it bare.
+    local gmp_opt="--with-gmp"
+    if [[ "$(uname -s)" == "Darwin" ]] && command -v brew &>/dev/null; then
+        gmp_opt="--with-gmp=$(brew --prefix gmp)"
+    fi
+
     local configure_opts=(
         "--prefix=$target"
         "--with-config-file-path=$target/etc"
@@ -513,7 +522,7 @@ phpvm_install() {
         "--with-webp"
         "--with-freetype"
         "$gettext_opt"
-        "--with-gmp"
+        "$gmp_opt"
         "--with-pgsql"
         "--with-pdo-pgsql"
         "--with-onig"
diff --git a/version.txt b/version.txt
index 6f165bc..69669de 100644
--- a/version.txt
+++ b/version.txt
@@ -1 +1 @@
-1.12.1
\ No newline at end of file
+1.12.2
\ No newline at end of file
diff --git a/windows/install.ps1 b/windows/install.ps1
index c23cac9..27380d9 100644
--- a/windows/install.ps1
+++ b/windows/install.ps1
@@ -8,7 +8,7 @@
 Set-StrictMode -Version Latest
 $ErrorActionPreference = "Stop"
 
-$PHPVM_VERSION = "1.12.1"
+$PHPVM_VERSION = "1.12.2"
 $PHPVM_DIR     = if ($env:PHPVM_DIR) { $env:PHPVM_DIR } else { "$env:USERPROFILE\.phpvm" }
 $PHPVM_BIN     = "$PHPVM_DIR\bin"
 
diff --git a/windows/phpvm.ps1 b/windows/phpvm.ps1
index ffbc458..71a4c4c 100644
--- a/windows/phpvm.ps1
+++ b/windows/phpvm.ps1
@@ -15,7 +15,7 @@ Set-StrictMode -Version Latest
 $ErrorActionPreference = "Stop"
 
 # -- Constants -----------------------------------------------------------------
-$PHPVM_VERSION = "1.12.1"
+$PHPVM_VERSION = "1.12.2"
 $PHPVM_DIR     = if ($env:PHPVM_DIR) { $env:PHPVM_DIR } else { "$env:USERPROFILE\.phpvm" }
 $VERSIONS_DIR  = "$PHPVM_DIR\versions"
 $CURRENT_LINK  = "$PHPVM_DIR\current"