You must link the resulting object file with libf2c: on Microsoft Windows system, link with libf2c.lib; on Linux or Unix systems, link with .../path/to/libf2c.a -lm or, if you install libf2c.a in a standard place, with -lf2c -lm

这是一个编译 Fortran 代码时的提示信息，要解决这个问题，你需要根据你的操作系统选择正确的链接库。

如果你在 Microsoft Windows 系统上编译，需要链接 libf2c.lib 库。

如果你在 Linux 或 Unix 系统上编译，需要链接 libf2c.a 库和标准数学库 -lm。如果你已经将 libf2c.a 安装在标准路径下，可以使用 -lf2c 和 -lm 进行链接。

举个例子，假设你的 libf2c.a 库在 /usr/local/lib 目录下，你可以使用以下命令进行链接：

gfortran -o my_program my_program.f /usr/local/lib/libf2c.a -lm

这里的 my_program.f 是你要编译的 Fortran 代码文件，my_program 是编译后生成的可执行文件。

希望这个回答能够帮助你解决问题。

相关问题

flutter 执行 build 报错：Direct local .aar file dependencies are not supported when building an AAR. The resulting AAR would be broken

直接本地的 .aar 文件依赖项不支持构建 AAR。由于任何本地 .aar 文件依赖项的类和 Android 资源不会打包在生成的 AAR 中，因此生成的 AAR 将无法使用。在这种情况下，Android Gradle 插件的早期版本也会生成损坏的 AAR（尽管不会抛出此错误）。如果您的 Flutter 项目中使用了本地的 .aar 文件依赖项，那么您需要将其转换为 Maven 依赖项，或者将其打包为本地 Maven 存储库中的库。您可以使用以下步骤解决此问题：

1. 将本地的 .aar 文件依赖项转换为 Maven 依赖项。您可以使用以下命令将其转换为 Maven 依赖项：

   ./gradlew :<module-name>:uploadArchives

然后，您可以在项目的 build.gradle 文件中添加以下 Maven 依赖项：

   repositories {
       mavenLocal()
       // other repositories
   }

   dependencies {
       implementation '<group-id>:<artifact-id>:<version>'
       // other dependencies
   }

2. 将本地的 .aar 文件依赖项打包为本地 Maven 存储库中的库。您可以使用以下步骤将其打包为本地 Maven 存储库中的库：

a. 在项目的 build.gradle 文件中添加以下 Maven 存储库：

   repositories {
       mavenLocal()
       // other repositories
   }

b. 在本地 Maven 存储库中创建一个新的目录，并将 .aar 文件复制到该目录中。

c. 在 .aar 文件所在的目录中创建一个新的 build.gradle 文件，并添加以下内容：

   apply plugin: 'maven'

   group = '<group-id>'
   version = '<version>'
   artifactId = '<artifact-id>'

   repositories {
       mavenLocal()
   }

   uploadArchives {
       repositories {
           mavenDeployer {
               repository(url: "file://${System.properties['user.home']}/.m2/repository")
           }
       }
   }

d. 在 .aar 文件所在的目录中运行以下命令：

   ./gradlew uploadArchives

然后，您可以在项目的 build.gradle 文件中添加以下 Maven 依赖项：

   repositories {
       mavenLocal()
       // other repositories
   }

   dependencies {
       implementation '<group-id>:<artifact-id>:<version>'
       // other dependencies
   }

write an IELTS sample article on the topic of advertisement with advanced vocabulary and phrases

Surely, I can assist you in generating an IELTS sample article on the topic of advertisement, utilizing advanced vocabulary and phrases.

Advertising is a prominent aspect of modern-day society, and the increasing sophistication in advertising techniques is a reflection of the advancement in technology. In this article, we will delve into the positive and negative impacts of advertising on consumers and society at large.

On the one hand, advertising can be viewed as a beneficial tool for informing the public about new products or services. At its finest, advertising employs techniques that persuade its audience to make informed decisions, thus resulting in mutually beneficial outcomes for both the consumer and the advertiser. However, the majority of advertisements are designed to entice consumers to purchase things they do not necessarily need or necessarily want. This form of advertising can result in financial strain on consumers, and can even contribute to the growing levels of debt amongst individuals and families.

Moreover, advertising has a profound psychological impact on individuals, which can lead to significant harm. Contemporary advertising methods often utilize triggering tactics, and persuasive language that manipulates the emotions of consumers, with a view of compelling them to buy services or products that they do not genuinely need. This can ultimately lead to a dependence on consumption, where individuals feel compelled to purchase things just to maintain a certain status.

Furthermore, advertising can have detrimental societal effects, particularly when advertisements contain gender biases or promote harmful stereotypes. Research has shown that advertisements have the ability to influence and reinforce specific gender roles or behavioral patterns, which can lead to gender inequality and discrimination in society.

In conclusion, while advertising can be beneficial to both the consumer and the advertiser, the negative effects of advertising cannot be ignored. It is, therefore, necessary for various stakeholders, including advertisers, regulators, and consumers, to collaborate effectively in managing the impacts of advertising on society. This will lead to an ethical and responsible advertising industry that is mindful of societal values and the welfare of consumers.