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configure.ac: Rework crypto library detection

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This further simplifies adding new crypto libraries.
This commit is contained in:
Peter Stuge 2012-05-16 23:01:11 +02:00
parent d512b25f69
commit 2df6cd6606
1 changed files with 28 additions and 24 deletions
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50
configure.ac
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@ -93,39 +93,43 @@ AC_ARG_WITH(libz,
AC_HELP_STRING([--with-libz],[Use Libz for compression]),
use_libz=$withval,use_libz=auto)
found_crypto=none
# Look for OpenSSL
if test "$use_openssl" != "no" && test "$use_libgcrypt" != "yes"; then
if test "$found_crypto" = "none" && test "$use_openssl" != "no"; then
AC_LIB_HAVE_LINKFLAGS([ssl], [crypto], [#include <openssl/ssl.h>])
LIBSREQUIRED=libssl,libcrypto
fi
# Look for libgcrypt
if test "$ac_cv_libssl" != "yes" && test "$use_libgcrypt" != "no"; then
AC_LIB_HAVE_LINKFLAGS([gcrypt], [], [#include <gcrypt.h>])
LIBS="$LIBS -lgcrypt"
fi
if test "$ac_cv_libssl" != "yes" && test "$ac_cv_libgcrypt" != "yes"; then
AC_MSG_ERROR([cannot find OpenSSL or Libgcrypt,
try --with-libssl-prefix=PATH or --with-libgcrypt-prefix=PATH])
fi
if test "$ac_cv_libssl" = "yes"; then
AC_DEFINE(LIBSSH2_OPENSSL, 1, [Use OpenSSL])
fi
AM_CONDITIONAL(OPENSSL, test "$ac_cv_libssl" = "yes")
if test "$ac_cv_libgcrypt" = "yes"; then
AC_DEFINE(LIBSSH2_LIBGCRYPT, 1, [Use libgcrypt])
fi
AM_CONDITIONAL(LIBGCRYPT, test "$ac_cv_libgcrypt" = "yes")
LIBSREQUIRED=libssl,libcrypto
# Not all OpenSSL have AES-CTR functions.
if test "$ac_cv_libssl" = "yes"; then
save_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS $LIBSSL"
AC_CHECK_FUNCS(EVP_aes_128_ctr)
LDFLAGS="$save_LDFLAGS"
found_crypto="OpenSSL (AES-CTR: ${ac_cv_func_EVP_aes_128_ctr:-N/A})"
fi
AM_CONDITIONAL(OPENSSL, test "$ac_cv_libssl" = "yes")
# Look for libgcrypt
if test "$found_crypto" = "none" && test "$use_libgcrypt" != "no"; then
AC_LIB_HAVE_LINKFLAGS([gcrypt], [], [#include <gcrypt.h>])
fi
if test "$ac_cv_libgcrypt" = "yes"; then
AC_DEFINE(LIBSSH2_LIBGCRYPT, 1, [Use libgcrypt])
LIBSREQUIRED= # libgcrypt doesn't provide a .pc file. sad face.
LIBS="$LIBS -lgcrypt"
found_crypto=libgcrypt
fi
AM_CONDITIONAL(LIBGCRYPT, test "$ac_cv_libgcrypt" = "yes")
if test "$found_crypto" = "none"; then
AC_MSG_ERROR([No crypto library found!
Try --with-libssl-prefix=PATH\
or --with-libgcrypt-prefix=PATH\
])
fi
# Look for Libz
@ -327,7 +331,7 @@ AC_MSG_NOTICE([summary of build options:
Compiler: ${CC}
Compiler flags: ${CFLAGS}
Library types: Shared=${enable_shared}, Static=${enable_static}
Crypto library: openssl: ${ac_cv_libssl:-no} (AES-CTR: ${ac_cv_func_EVP_aes_128_ctr:-N/A}) libgcrypt: ${ac_cv_libgcrypt:-no}
Crypto library: ${found_crypto}
Debug build: $enable_debug
Build examples: $build_examples
Path to sshd: $ac_cv_path_SSHD (only for self-tests)