X-Git-Url: http://git.meshlink.io/?p=meshlink;a=blobdiff_plain;f=m4%2Flibgcrypt.m4;fp=m4%2Flibgcrypt.m4;h=01c7478fbccc6918f83e6edaabf199d20c56465b;hp=0000000000000000000000000000000000000000;hb=53b00f8c1abda0d477c75e4d70a7341301fa1733;hpb=283c5d1cf07f77d29fc1fc2f09532508f5124679

diff --git a/m4/libgcrypt.m4 b/m4/libgcrypt.m4
new file mode 100644
index 00000000..01c7478f
--- /dev/null
+++ b/m4/libgcrypt.m4
@@ -0,0 +1,33 @@
+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.])]
+  )
+])