cargo: statically link binary on Windows/MSVC

Before this change, rg.exe depended on vcruntime140.dll, which does not
exist on a fresh install of Windows.

Closes #1613

.cargo/config.toml

@@ -0,0 +1,8 @@
+# On Windows MSVC, statically link the C runtime so that the resulting EXE does
+# not depend on the vcruntime DLL.
+#
+# See: https://github.com/BurntSushi/ripgrep/pull/1613
+[target.x86_64-pc-windows-msvc]
+rustflags = ["-C", "target-feature=+crt-static"]
+[target.i686-pc-windows-msvc]
+rustflags = ["-C", "target-feature=+crt-static"]

CHANGELOG.md

@@ -39,6 +39,8 @@ Feature enhancements:
   Yang.
 * [FEATURE #1404](https://github.com/BurntSushi/ripgrep/pull/1404):
   ripgrep now prints a warning if nothing is searched.
+* [FEATURE #1613](https://github.com/BurntSushi/ripgrep/pull/1613):
+  Cargo will now produce static executables on Windows when using MSVC.
 * [FEATURE #1680](https://github.com/BurntSushi/ripgrep/pull/1680):
   Add `-.` as a short flag alias for `--hidden`.
 * [FEATURE #1856](https://github.com/BurntSushi/ripgrep/pull/1856):

README.md

@@ -192,15 +192,9 @@ multiline search and opt-in fancy regex support via PCRE2.
 The binary name for ripgrep is `rg`.
 
 **[Archives of precompiled binaries for ripgrep are available for Windows,
-macOS and Linux.](https://github.com/BurntSushi/ripgrep/releases)** Users of
-platforms not explicitly mentioned below are advised to download one of these
-archives.
-
-Linux binaries are static executables. Windows binaries are available either as
-built with MinGW (GNU) or with Microsoft Visual C++ (MSVC). When possible,
-prefer MSVC over GNU, but you'll need to have the [Microsoft VC++ 2015
-redistributable](https://www.microsoft.com/en-us/download/details.aspx?id=48145)
-installed.
+macOS and Linux.](https://github.com/BurntSushi/ripgrep/releases)** Linux and
+Windows binaries are static executables. Users of platforms not explicitly
+mentioned below are advised to download one of these archives.
 
 If you're a **macOS Homebrew** or a **Linuxbrew** user, then you can install
 ripgrep from homebrew-core: