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From 5ea6b3859ebe16ff47856b58262b14463e119c13 Mon Sep 17 00:00:00 2001
From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Date: Tue, 19 Apr 2016 22:14:42 +0200
Subject: [PATCH] Don't assume cryptopp is system-wide installed
The current build system adds "-isystem /usr/include/$(CRYPTOLIB)" to
AM_CPPFLAGS, but this is wrong because cryptopp might not be installed
in this location. Instead, the build system should simply include
<cryptopp/...> or <crypto++/...> and rely on the compiler include
path.
The tricky part is that it can be <cryptopp/...> or <crypto++/...>. To
solve this, we use a solution similar to the one used in
https://github.com/bingmann/crypto-speedtest/blob/master/m4/cryptopp.m4
and
https://github.com/bingmann/crypto-speedtest/blob/master/src/speedtest_cryptopp.cpp:
the configure script fills in a variable called
CRYPTOLIB_HEADER_PREFIX, and we use that in the C++ code to include
the right header file.
It is worth mentioning that doing #include
<CRYPTOLIB_HEADER_PREFIX/foobar.h> doesn't work, and we have to use an
intermediate #define'd constant to overcome this C preprocessor
limitation.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Submitted upstream at https://github.com/NVIDIA/tegrarcm/pull/2
---
configure.ac | 1 +
src/Makefile.am | 2 +-
src/aes-cmac.cpp | 28 +++++++++++++++++-----------
3 files changed, 19 insertions(+), 12 deletions(-)
diff --git a/configure.ac b/configure.ac
index 943654f..620e158 100644
--- a/configure.ac
+++ b/configure.ac
@@ -33,6 +33,7 @@ AC_LINK_IFELSE(
[AC_MSG_ERROR([libcrypto++/libcryptopp is not installed.])])]
)
AC_SUBST(CRYPTOLIB)
+AC_DEFINE_UNQUOTED([CRYPTOLIB_HEADER_PREFIX], [$CRYPTOLIB], [Location of cryptolib header])
LDFLAGS=$SAVED_LDFLAGS
AC_LANG(C)
diff --git a/src/Makefile.am b/src/Makefile.am
index 3dad0e6..35a606f 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1,5 +1,5 @@
AM_CFLAGS = -Wall -std=c99
-AM_CPPFLAGS = -isystem /usr/include/$(CRYPTOLIB) $(LIBUSB_CFLAGS)
+AM_CPPFLAGS = $(LIBUSB_CFLAGS)
bin_PROGRAMS = tegrarcm
tegrarcm_SOURCES = \
diff --git a/src/aes-cmac.cpp b/src/aes-cmac.cpp
index 24c89f8..da8be5a 100644
--- a/src/aes-cmac.cpp
+++ b/src/aes-cmac.cpp
@@ -26,6 +26,9 @@
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
+
+#include "config.h"
+
#include <iostream>
using std::cout;
using std::cerr;
@@ -40,26 +43,29 @@ using std::string;
#include <cstdlib>
using std::exit;
-#include "cryptlib.h"
-using CryptoPP::Exception;
+#define CRYPTOPP_INCLUDE_CRYPTLIB <CRYPTOLIB_HEADER_PREFIX/cryptlib.h>
+#define CRYPTOPP_INCLUDE_CMAC <CRYPTOLIB_HEADER_PREFIX/cmac.h>
+#define CRYPTOPP_INCLUDE_AES <CRYPTOLIB_HEADER_PREFIX/aes.h>
+#define CRYPTOPP_INCLUDE_HEX <CRYPTOLIB_HEADER_PREFIX/hex.h>
+#define CRYPTOPP_INCLUDE_FILTERS <CRYPTOLIB_HEADER_PREFIX/filters.h>
+#define CRYPTOPP_INCLUDE_SECBLOCK <CRYPTOLIB_HEADER_PREFIX/secblock.h>
-#include "cmac.h"
-using CryptoPP::CMAC;
+#include CRYPTOPP_INCLUDE_CRYPTLIB
+#include CRYPTOPP_INCLUDE_CMAC
+#include CRYPTOPP_INCLUDE_AES
+#include CRYPTOPP_INCLUDE_HEX
+#include CRYPTOPP_INCLUDE_FILTERS
+#include CRYPTOPP_INCLUDE_SECBLOCK
-#include "aes.h"
+using CryptoPP::Exception;
+using CryptoPP::CMAC;
using CryptoPP::AES;
-
-#include "hex.h"
using CryptoPP::HexEncoder;
using CryptoPP::HexDecoder;
-
-#include "filters.h"
using CryptoPP::StringSink;
using CryptoPP::StringSource;
using CryptoPP::HashFilter;
using CryptoPP::HashVerificationFilter;
-
-#include "secblock.h"
using CryptoPP::SecByteBlock;
extern "C" int cmac_hash(const unsigned char *msg, int len, unsigned char *cmac_buf)
--
2.6.4
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