Question

假设我有以下文件：

.:           include/  01.src  02.src  03.src  Makefile

./include:   01.inc  02-source1.inc  02-source2.inc

我有以下Makefile（来源：Complex pattern rule in Makefile）：

exe = ${patsubst %.src, %.exe, ${wildcard *.src}}

all : ${exe}

.SECONDEXPANSION:
${exe} : %.exe : %.src $${wildcard include/%*.inc}
    @echo compile $@ using $^

这表示01.exe将使用01.src和include/01*.inc进行编译（类似于02.exe和03.exe）。实际上，输出：

compile 01.exe using 01.src include/01.inc
compile 02.exe using 02.src include/02-source1.inc include/02-source2.inc
compile 03.exe using 03.src

我的问题是：如果01.src，02.src和03.src重命名为01-first.src，02-second.src，我该如何修改此Makefile，和03-third.src？所需的输出是：

compile 01-first.exe using 01-first.src include/01.inc
compile 02-second.exe using 02-second.src include/02-source1.inc include/02-source2.inc
compile 03-third.exe using 03-third.src

Answer 1

试试这个：

${exe} : %.exe : %.src $${wildcard include/$$(shell echo % | head -c 2)*.inc}
    @echo compile $@ using $^

输出：

compile 03-third.exe using 03-third.src
compile 02-second.exe using 02-second.src include/02-source1.inc include/02-source2.inc
compile 01-first.exe using 01-first.src include/01.inc

makefile根据来源

1 个答案: