tinc/m4/libgcrypt.m4

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dnl Check to find the libgcrypt headers/libraries
AC_DEFUN([tinc_LIBGCRYPT],
[
AC_ARG_WITH(libgcrypt,
AS_HELP_STRING([--with-libgcrypt=DIR], [libgcrypt base directory, or:]),
[libgcrypt="$withval"
CPPFLAGS="$CPPFLAGS -I$withval/include"
LDFLAGS="$LDFLAGS -L$withval/lib"]
)
AC_ARG_WITH(libgcrypt-include,
AS_HELP_STRING([--with-libgcrypt-include=DIR], [libgcrypt headers directory (without trailing /libgcrypt)]),
[libgcrypt_include="$withval"
CPPFLAGS="$CPPFLAGS -I$withval"]
)
AC_ARG_WITH(libgcrypt-lib,
AS_HELP_STRING([--with-libgcrypt-lib=DIR], [libgcrypt library directory]),
[libgcrypt_lib="$withval"
LDFLAGS="$LDFLAGS -L$withval"]
)
AC_CHECK_HEADERS([gcrypt.h],
[],
[AC_MSG_ERROR([libgcrypt header files not found.]); break]
)
AC_CHECK_LIB(gcrypt, gcry_cipher_encrypt,
[LIBS="-lgcrypt $LIBS"],
[AC_MSG_ERROR([libgcrypt libraries not found.])]
)
])