Question

我想通过将不同的参数传递给#define变量，通过Makefile多次编译C代码。我应该把Noobie放在哪里？

在我的C代码中，我为矩阵的尺寸定义了尺寸

#define N 500

我想在一个循环中多次编译它，但是我无法理解如何传递

-DN=(different sizes)

在Makefile中。

该工作的结构如下： 1.清洁 2.用-DN =确定尺寸 3.运行性能测试并获取结果 4.以不同的大小重复。

我的Makefile现在看起来像这样：

exe_name = exe
CC = gcc
CFLAGS =  -g -O2 -ggdb
LDFLAGS = -lm -L. -Wall -Wextra
OMPFLAGS = -fopenmp

OBJS = ompmatmul.o

default: $(exe_name)

$(exe_name): $(OBJS) 
    $(CC) -o $@ $^ $(LDFLAGS) $(OMPFLAGS)

%.o: %.c
    $(CC) -c $< -o $@ $(CFLAGS) $(OMPFLAGS) 

clean: 
    rm -f $(OBJS) $(exe_name) *~

.PHONY: clean #Don't look for a file named 'clean'

在将make插入到循环中时，如下所示：

for size in $(seq 500 500 3000); do

    make clean
    make #define_new_size
        #do_performance_and_acquire_results
done

Answer 1

要将参数传递给make文件，请添加如下参数：

make N=500

然后您的makefile将包含：

ifndef N
    # provide a default
    N=500
endif

...

$(exe_name): $(OBJS) 
    $(CC) -DN=$(N) -o $@ $^ $(LDFLAGS) $(OMPFLAGS)

Answer 2

要基于dbush提出的出色解决方案来自动化测试，可以将以下内容添加到Makefile中：

List<Statement> newlistAllow = new ArrayList <>();
 for (CommonPrefix  objectToDelete:listAllow) {
     Statement allowRestrictedWriteStatement = new Statement(Statement.Effect.Allow)
             .withPrincipals(new Principal("12345678910"))
             .withActions(S3Actions.DeleteObject)
             .withResources(new S3ObjectResource(bucketNameToUse,objectToDelete.toString()));
     newlistAllow.add(allowRestrictedWriteStatement);
 }

 List<Statement> newlistDeny = new ArrayList <>();
 for (CommonPrefix objectToRetain:listDeny) {
     Statement denyRestrictedWriteStatement = new Statement(Statement.Effect.Deny)
             .withPrincipals(new Principal("12345678910"))
             .withActions(S3Actions.DeleteObject)
             .withResources(new S3ObjectResource(bucketNameToUse,objectToRetain.toString()));
     newlistDeny.add(denyRestrictedWriteStatement);
 }

 Policy policyDeny = new Policy();
 policyDeny.setStatements(newlistDeny);
 Policy policyAllow = new Policy();
 policyAllow.setStatements(newlistAllow);

 AWSCredentials credentials = new BasicAWSCredentials("xxxxxxxxxxxxxxxxx", "yyyyyyyyyyyyyyyyyyyy");
 AmazonS3 s3client = new AmazonS3Client(credentials);

 s3client.setBucketPolicy(bucketNameToUse,policyAllow.toJson());
 s3client.setBucketPolicy(bucketNameToUse,policyDeny.toJson());

传递参数以更改#define变量

2 个答案: