Question

如何检测gnu make将使用的shell？我希望我的make能够在以下平台上运行：

linux
windows
使用cygwin的窗口（请注意，在使用cygwin的windows上，make使用cygwin shell）

然后我想在OS上独立检测系统中是否存在gcc。

Answer 1

到目前为止，我提出了这个解决方案：

# detect what shell is used
ifeq ($(findstring cmd.exe,$(SHELL)),cmd.exe)
$(info "shell Windows cmd.exe")
DEVNUL := NUL
WHICH := where
else
$(info "shell Bash")
DEVNUL := /dev/null
WHICH := which
endif

# detect platform independently if gcc is installed
ifeq ($(shell ${WHICH} gcc 2>${DEVNUL}),)
$(error "gcc is not in your system PATH")
else
$(info "gcc found")
endif

当我需要检测更多可以使用的工具时，

EXECUTABLES = ls dd 
K := $(foreach myTestCommand,$(EXECUTABLES),\
        $(if $(shell ${WHICH} $(myTestCommand) 2>${DEVNUL} ),\
            $(myTestCommand) found,\
            $(error "No $(myTestCommand) in PATH)))
$(info ${K})

如何检测GNU make中使用的shell？

1 个答案: