chore: Using Windows, add exe extension to tools (influxdata#11608)

.gitignore

@@ -4,8 +4,8 @@
 /telegraf.exe
 /telegraf.gz
 /tools/package_lxd_test/package_lxd_test
-/tools/license_checker/license_checker
-/tools/readme_config_includer/generator
+/tools/license_checker/license_checker*
+/tools/readme_config_includer/generator*
 /vendor
 .DS_Store
 process.yml

Makefile

@@ -1,11 +1,10 @@
-ifeq ($(OS),Windows_NT)
-	next_version := $(shell type build_version.txt)
-	tag := $(shell git describe --exact-match --tags 2> nul)
-else
-	next_version := $(shell cat build_version.txt)
-	tag := $(shell git describe --exact-match --tags 2>/dev/null)
+ifneq (,$(filter $(OS),Windows_NT Windows))
+	EXEEXT=.exe
 endif
 
+next_version := $(shell cat build_version.txt)
+tag := $(shell git describe --exact-match --tags 2>/dev/null)
+
 branch := $(shell git rev-parse --abbrev-ref HEAD)
 commit := $(shell git rev-parse --short=8 HEAD)
 glibc_version := 2.17
@@ -115,8 +114,8 @@ versioninfo:
 	go generate cmd/telegraf/telegraf_windows.go; \
 
 build_tools:
-	$(HOSTGO) build -o ./tools/license_checker/license_checker ./tools/license_checker
-	$(HOSTGO) build -o ./tools/readme_config_includer/generator ./tools/readme_config_includer/generator.go
+	$(HOSTGO) build -o ./tools/license_checker/license_checker$(EXEEXT) ./tools/license_checker
+	$(HOSTGO) build -o ./tools/readme_config_includer/generator$(EXEEXT) ./tools/readme_config_includer/generator.go
 
 embed_readme_%:
 	go generate -run="readme_config_includer/generator$$" ./plugins/$*/...

README.md

@@ -73,18 +73,21 @@ sudo yum install telegraf
 
 Telegraf requires Go version 1.18 or newer, the Makefile requires GNU make.
 
+On Windows, the makefile requires the use of a bash terminal to support all makefile targets.
+An easy option to get bash for windows is using the version that comes with [git for windows](https://gitforwindows.org/).
+
 1. [Install Go](https://golang.org/doc/install) >=1.18 (1.18.0 recommended)
 2. Clone the Telegraf repository:
 
    ```shell
    git clone https://github.com/influxdata/telegraf.git
    ```
 
-3. Run `make` from the source directory
+3. Run `make build` from the source directory
 
    ```shell
    cd telegraf
-   make
+   make build
    ```
 
 ### Nightly Builds