Question

GNU Make v。2.4.1

MacOS High Sierra

使用clang编译可执行文件

我的make文件有一个特殊的问题。我将CodeLite IDE生成的make文件与成功用于编译要添加功能的C库的make文件进行了拼接。我在库中包装了一些代码，以制作可执行的测试文件。我已经成功地编译了它直到昨天。我相信我所做的唯一区别是添加了“ $（OtherFlags）”来正确设置标志。现在，即使我删除了此添加项，make也不起作用。我得到了错误

'Debug / iceemdan-clang'不需要创建目标'Debug / main.c.o'的规则。停止。

这是由makefile的93行产生的

$(LinkerName) $(OutputSwitch)$(OutputFile) @$(ObjectsFileList) $(Libpath) $(Libs) $(IncludeSwitch) $(IncludePath) $(OtherFlags)

这是上下文之外的胡言乱语，如下所示（底部注释掉的代码来自原始makefile）

##
## Auto Generated makefile by CodeLite IDE
## any manual changes will be erased      
##
## Debug
ProjectName            :=iceemdan-clang
ConfigurationName      :=Debug
WorkspacePath          :=/Users/Common/iceemdan-dev/iceemdan-dev
ProjectPath            :=/Users/Common/iceemdan-dev/iceemdan-dev/iceemdan-clang
IntermediateDirectory  :=./Debug
OutDir                 := $(IntermediateDirectory)
CurrentFileName        :=
CurrentFilePath        :=
CurrentFileFullPath    :=
User                   :=Coleman Family
Date                   :=08/08/2018
CodeLitePath           :="/Users/Common/Library/Application Support/CodeLite"
LinkerName             :=clang
SharedObjectLinkerName :=clang -shared -fPIC
ObjectSuffix           :=.o
DependSuffix           :=
PreprocessSuffix       :=.o.i
DebugSwitch            :=-gstab
IncludeSwitch          :=-I
LibrarySwitch          :=-l
OutputSwitch           :=-o 
LibraryPathSwitch      :=-L
PreprocessorSwitch     :=-D
SourceSwitch           :=-c 
OutputFile             :=$(IntermediateDirectory)/$(ProjectName)
Preprocessors          :=
ObjectSwitch           :=-o 
ArchiveOutputSwitch    := 
PreprocessOnlySwitch   :=-E 
ObjectsFileList        :="iceemdan-clang.txt"
PCHCompileFlags        :=
MakeDirCommand         :=mkdir -p
LinkOptions            :=  
IncludePath            :=  /opt/local/include
IncludePCH             := 
RcIncludePath          := 
Libs                   := -lgsl -lgslcblas -lm
ArLibs                 :=  
LibPath                := $(LibraryPathSwitch) /opt/local/lib
OtherFlags             :=-DHAVE_INLINE -Wall -Wextra -std=c99 -pedantic -Wno-unknown-pragmas -Wshadow -Wpointer-arith -DCLANG

##
## Common variables
## AR, CXX, CC, AS, CXXFLAGS and CFLAGS can be overriden using an environment variables
##
AR       := ar rcus
CXX      := clang++
CC       := clang
CXXFLAGS :=  -g -O0 -Wall $(Preprocessors)
CFLAGS   :=  $(commonflags) $< -fPIC -shared -Wl $@ $(gsl_flags) -o $@ $(Preprocessors)
ASFLAGS  := 
AS       := llvm-as


##
## User defined environment variables
##
CodeLiteDir:=/Applications/codelite.app/Contents/SharedSupport/
PATH:=/Users/Common/usr/local/bin:/Library/Frameworks/Python.framework/Versions/2.7/bin:/Library/Frameworks/Python.framework/Versions/3.5/bin:/opt/local/bin:/opt/local/sbin:/Library/Frameworks/Python.framework/Versions/2.7/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/opt/X11/bin:/Library/TeX/texbin:/opt/local/include
Srcs=main.c 

Objects0=$(IntermediateDirectory)/main.c$(ObjectSuffix) 



Objects=$(Objects0) 

##
## Main Build Targets 
##
.PHONY: all clean PreBuild PrePreBuild PostBuild MakeIntermediateDirs
all: $(OutputFile)

PreBuild:
    @echo Executing Pre Build commands ...
    $(eval gsl_flags = -L/opt/local/lib -lgsl -lgslcblas -lm -I/opt/local/include -DHAVE_INLINE)
    $(eval commonflags := -Wall -Wextra -std=c99 -pedantic -Wno-unknown-pragmas -Wshadow -Wpointer-arith)
#   $(eval commonflags += $(CFLAGS))
#   $(eval commonflags += -g -DEEMD_DEBUG=0)
    $(eval commonflags += -DCLANG)
    $(eval PREFIX ?= /usr)
    @echo Done

$(OutputFile): $(IntermediateDirectory)/.d $(Objects) 
    @$(MakeDirCommand) $(@D)
    @echo "" > $(IntermediateDirectory)/.d
    @echo $(Objects0)  > $(ObjectsFileList)
    $(LinkerName) $(OutputSwitch)$(OutputFile) @$(ObjectsFileList) $(Libpath) $(Libs) $(IncludeSwitch) $(IncludePath) $(OtherFlags)

#   clang $(gsl_flags) $(commonflags) -o ./Debug/main.c.o

MakeIntermediateDirs:
    @test -d ./Debug || $(MakeDirCommand) ./Debug


$(IntermediateDirectory)/.d:
    @test -d ./Debug || $(MakeDirCommand) ./Debug

#PreBuild:

# all

#Debug/main.c.o: main.c 
#src/eemd.h | Debug
#   clang $(commonflags) -c $< $(gsl_flags) -o $@

#Debug/main.c.a: Debug/main.c.o
#   $(AR) rcs $@ $^

#eemd: main.c src/eemd.h
#   clang $(commonflags) $< -fPIC -shared -Wl, ,$@ $(gsl_flags) -o $@

抱怨的是即使存在main.c，也无法构建main.c.o。 main -d似乎表明它正在搜索main.c. *，但没有费心去寻找main.c本身。

使用词干“ main.c”的尝试模式规则。

这在几个不同的目录中多次发生。我看到类似的回复

拒绝不可能的隐式先决条件'Debug / main.c.l'。

我从未见过尝试找到main.c的尝试。

Answer 1

您的中间体应该称为main.o，而不是main.c.o。问题可能在这里：

Objects0=$(IntermediateDirectory)/main.c$(ObjectSuffix)

应该是

Objects0=$(IntermediateDirectory)/main$(ObjectSuffix)

我认为...

Mac：“找不到要成为目标的规则”（C，CodeLite）

1 个答案: