如何使用hdfk庫進入qt？

Question

如何在我的qt項目中使用HKDF庫？ 我發現這個庫在qt中似乎是合適的（我使用我的源代碼檢查過），但我無法將此標題包含在項目中。

Answer 1

將庫添加到Qt項目實際上非常簡單。 在qmake .pro文件中，您需要以下內容：

# This is the search location for the compiler to look for headers that accompany your library.
# For system libraries that typically resides under **/usr/include** or **/usr/local/include** if you used `make install`.
INCLUDEPATH+="/path/of/headers/for/library"

# This is the search location for the compiler/linker to look for the library itself.
# For system libraries this is usually somewhere under **/usr/lib** or **/usr/local/lib**
LIBS+= -L/path/of/library/itself

# This is the name of the library to include at link time
# without the **lib** prefix and the **.so** / **.a** / **.lib** / **.dll** extension.
LIBS+= -lMyLibraryName

# This is the full path of the library file itself
# *including* the aforementioned  **lib** prefix and the **.so** / **.a** / **.lib** / **.dll** extension.
# This is used by qmake to look for changes to the library at build time,
# to make sure it is re-linked on change and other dependency related stuff
PRE_TARGETDEPS += /path/and/filename/of/library/itself/libMyLibraryName.lib

提示：所有路徑，除非它們被指定為絕對路徑 （以'/'開頭）將相對於構建目錄 。 這可能是項目目錄，但在陰影構建的情況下，它將是陰影構建目錄 。 作為提示，只需將以下內容添加到您的相對路徑中，使它們相對於項目目錄： $$_PRO_FILE_PWD_/ so如果您的lib位於/my/qt/project/libs/mylib您可以使項目適應移動通過使用$$_PRO_FILE_PWD_/libs/mylib來代替。 請注意，“project dir”是qmake .pro文件的位置。

Answer 2

我使用https://www.cryptopp.com的 CryptoPP HKDF實現

首先，為有效的架構和您的平台（MacOS，Android，iOS等）構建靜態庫。 CryptoPP Wiki有工作手冊和腳本。

然后，只需在qmake * .pro文件中添加2行：

INCLUDEPATH += $$DEV_LIBS_PATH/cryptopp/$$ANDROID_ARCH/include
LIBS += -L$$DEV_LIBS_PATH/cryptopp/$$ANDROID_ARCH/lib -lcryptopp

你可以理解，我使用了qmake變量DEV_LIBS_PATH和ANDROID_ARCH，這些變量只是構成相關頭文件和靜態庫libcryptopp.a正確路徑。