configure.in - platform/external/libsrtp2 - Gitiles

 dnl Process this file with autoconf to produce a configure script.
 AC_INIT([libsrtp2], [2.1.0-pre], [https://github.com/cisco/libsrtp/issues])

 dnl Must come before AC_PROG_CC
 if test -z "$CFLAGS"; then
    dnl Default value for CFLAGS if not specified.
    CFLAGS="-Wall -pedantic -O4 -fexpensive-optimizations -funroll-loops"
 fi

 dnl Checks for programs.
 m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
 AC_PROG_RANLIB
 AC_PROG_CC
 AC_PROG_INSTALL

 dnl Check the byte order
 AC_C_BIGENDIAN

 AC_CANONICAL_HOST

 dnl check host_cpu type, set defines appropriately
 case $host_cpu in
      i*86 | x86_64 )
 	AC_DEFINE(CPU_CISC, 1,
 	   [Define if building for a CISC machine (e.g. Intel).])
         AC_DEFINE(HAVE_X86, 1,
 	   [Define to use X86 inlined assembly code]);;
 	* )
 	   AC_DEFINE(CPU_RISC, 1,
 	    [Define if building for a RISC machine (assume slow byte access).])
 	;;
 esac

 dnl Check if we are on a Windows platform.
 case $host_os in
     *cygwin*|*mingw* )
 	EXE=.exe
 	HOST_IS_WINDOWS=yes
 	;;
     * )
 	EXE=""
 	;;
 esac
 AC_SUBST(EXE)   # define executable suffix; this is needed for `make clean'


 dnl Checks for header files.
 AC_HEADER_STDC
 AC_CHECK_HEADERS(stdlib.h)
 AC_CHECK_HEADERS(unistd.h)
 AC_CHECK_HEADERS(byteswap.h)
 AC_CHECK_HEADERS(stdint.h)
 AC_CHECK_HEADERS(sys/uio.h)
 AC_CHECK_HEADERS(inttypes.h)
 AC_CHECK_HEADERS(sys/types.h)
 AC_CHECK_HEADERS(machine/types.h)
 AC_CHECK_HEADERS(sys/int_types.h)

 dnl socket() and friends
 AC_CHECK_HEADERS(sys/socket.h netinet/in.h arpa/inet.h)
 AC_CHECK_HEADERS(windows.h, [AC_CHECK_HEADERS(winsock2.h)])

 AC_CHECK_TYPES([int8_t,uint8_t,int16_t,uint16_t,int32_t,uint32_t,uint64_t])
 AC_CHECK_SIZEOF(unsigned long)
 AC_CHECK_SIZEOF(unsigned long long)

 dnl Checks for typedefs, structures, and compiler characteristics.
 AC_C_CONST
 AC_C_INLINE
 AC_TYPE_SIZE_T

 dnl Checks for library functions.
 AC_CHECK_FUNCS(socket inet_aton usleep sigaction)

 dnl Find socket function if not found yet.
 if test "x$ac_cv_func_socket" = "xno"; then
   AC_CHECK_LIB(socket, socket)
   AC_MSG_CHECKING([for socket in -lwsock32])
   SAVELIBS="$LIBS"
   LIBS="$LIBS -lwsock32"
   AC_LINK_IFELSE([AC_LANG_PROGRAM([[
 #include <winsock2.h>
 ]], [[
 socket(0, 0, 0);
 ]])],[ac_cv_func_socket=yes
     AC_MSG_RESULT(yes)],[LIBS="$SAVELIBS"
     AC_MSG_RESULT(no)])
 fi

 AC_MSG_CHECKING(whether to compile in debugging)
 AC_ARG_ENABLE(debug,
   [AS_HELP_STRING([--disable-debug],
 		  [do not compile in dynamic debugging system])],
   [], enable_debug=yes)
 if test "$enable_debug" = "yes"; then
    AC_DEFINE(ENABLE_DEBUGGING, 1,
       [Define to compile in dynamic debugging system.])
 fi
 AC_MSG_RESULT($enable_debug)

 AC_MSG_CHECKING(whether to use ISMAcryp code)
 AC_ARG_ENABLE(generic-aesicm,
   [AS_HELP_STRING([--enable-generic-aesicm],
 		  [compile in changes for ISMAcryp])],
   [], enable_generic_aesicm=no)
 if test "$enable_generic_aesicm" = "yes"; then
    AC_DEFINE(GENERIC_AESICM, 1, [Define this to use ISMAcryp code.])
 fi
 AC_MSG_RESULT($enable_generic_aesicm)

 PKG_PROG_PKG_CONFIG

 AC_MSG_CHECKING(whether to leverage OpenSSL crypto)
 AC_ARG_ENABLE(openssl,
   [AS_HELP_STRING([--enable-openssl],
 		  [compile in OpenSSL crypto engine])],
   [], enable_openssl=no)
 AC_MSG_RESULT($enable_openssl)
 if test "$enable_openssl" = "yes"; then
    AC_MSG_CHECKING(for user specified OpenSSL directory)
    AC_ARG_WITH(openssl-dir,
       [AS_HELP_STRING([--with-openssl-dir], [Location of OpenSSL installation])],
       [openssl_dir="$withval"], openssl_dir="")

    LDFLAGS="$LDFLAGS -L$openssl_dir/lib $($PKG_CONFIG --libs openssl)";
    CFLAGS="$CFLAGS -I$openssl_dir/include $($PKG_CONFIG --cflags openssl)";

    AC_CHECK_LIB([dl], [dlopen], [],
              [AC_MSG_WARN([can't find libdl])])
    AC_CHECK_LIB([z], [inflate], [],
              [AC_MSG_WARN([can't find libz])])
    AC_CHECK_LIB([crypto], [EVP_EncryptInit], [],
              [AC_MSG_FAILURE([can't find openssl >1.0.1 crypto lib])])
    AC_CHECK_LIB([crypto], [EVP_aes_128_ctr], [],
              [AC_MSG_FAILURE([can't find openssl >1.0.1 crypto lib])])
    AC_CHECK_LIB([crypto], [EVP_aes_128_gcm], [],
              [AC_MSG_FAILURE([can't find openssl >1.0.1 crypto lib])])
    AC_DEFINE(OPENSSL, 1, [Define this to use OpenSSL crypto.])
    AES_ICM_OBJS="crypto/cipher/aes_icm_ossl.o crypto/cipher/aes_gcm_ossl.o"
    HMAC_OBJS=crypto/hash/hmac_ossl.o
    USE_OPENSSL=1
    AC_SUBST(USE_OPENSSL)

    AC_MSG_CHECKING(whether to leverage OpenSSL KDF algorithm)
    AC_ARG_ENABLE(openssl-kdf,
       [AS_HELP_STRING([--enable-openssl-kdf], [Use OpenSSL KDF algorithm])],
       [], enable_openssl_kdf=no)
    AC_MSG_RESULT($enable_openssl_kdf)
    if test "$enable_openssl_kdf" = "yes"; then
       AC_CHECK_LIB([crypto], [kdf_srtp], [],
              [AC_MSG_FAILURE([can't find openssl KDF lib])])
       AC_DEFINE(OPENSSL_KDF, 1, [Define this to use OpenSSL KDF for SRTP.])
    fi
 else
    AES_ICM_OBJS="crypto/cipher/aes_icm.o crypto/cipher/aes.o"
    HMAC_OBJS="crypto/hash/hmac.o crypto/hash/sha1.o"
 fi
 AC_SUBST(AES_ICM_OBJS)
 AC_SUBST(HMAC_OBJS)

 dnl Checking for PCAP
 AC_CHECK_LIB([pcap],[pcap_create],
     [PCAP=1
      LIBS="-lpcap $LIBS"
      HAVE_PCAP=1
      AC_DEFINE(HAVE_PCAP, 1, [Define to 1 if you have the `pcap' library (-lpcap)])
      AC_SUBST(HAVE_PCAP)
 ])

 AC_MSG_CHECKING(whether to use stdout for error reporting)
 AC_ARG_ENABLE(stdout,
   [AS_HELP_STRING([--enable-stdout], [use stdout for debug/error reporting])],
   [], enable_stdout=no)
 if test "$enable_stdout" = "yes"; then
    AC_DEFINE(ERR_REPORTING_STDOUT, 1, [Define to use logging to stdout.])
 fi
 AC_MSG_RESULT($enable_stdout)

 AC_MSG_CHECKING(whether to use /dev/console for error reporting)
 AC_ARG_ENABLE(console,
   [AS_HELP_STRING([--enable-console], [use /dev/console for error reporting])],
   [], enable_console=no)
 if test "$enable_console" = "yes"; then
    AC_DEFINE(USE_ERR_REPORTING_FILE, 1, [Write errors to this file])
    AC_DEFINE(ERR_REPORTING_FILE, "/dev/console", [Report errors to this file.])
 fi
 AC_MSG_RESULT($enable_console)

 AC_CONFIG_HEADER(crypto/include/config.h:config_in.h)

 if test "x$PKG_CONFIG" != "x"; then
     HAVE_PKG_CONFIG=1
     AC_CONFIG_FILES([libsrtp2.pc])
 else
     HAVE_PKG_CONFIG=0
 fi
 AC_SUBST(HAVE_PKG_CONFIG)
 AC_CONFIG_FILES([Makefile crypto/Makefile doc/Makefile])
 AC_OUTPUT

 # This is needed when building outside the source dir.
 AS_MKDIR_P(crypto/cipher)
 AS_MKDIR_P(crypto/hash)
 AS_MKDIR_P(crypto/kernel)
 AS_MKDIR_P(crypto/math)
 AS_MKDIR_P(crypto/replay)
 AS_MKDIR_P(crypto/test)
 AS_MKDIR_P(doc)
 AS_MKDIR_P(srtp)
 AS_MKDIR_P(test)
	dnl Process this file with autoconf to produce a configure script.
	AC_INIT([libsrtp2], [2.1.0-pre], [https://github.com/cisco/libsrtp/issues])

	dnl Must come before AC_PROG_CC
	if test -z "$CFLAGS"; then
	dnl Default value for CFLAGS if not specified.
	CFLAGS="-Wall -pedantic -O4 -fexpensive-optimizations -funroll-loops"
	fi

	dnl Checks for programs.
	m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
	AC_PROG_RANLIB
	AC_PROG_CC
	AC_PROG_INSTALL

	dnl Check the byte order
	AC_C_BIGENDIAN

	AC_CANONICAL_HOST

	dnl check host_cpu type, set defines appropriately
	case $host_cpu in
	i*86 \| x86_64 )
	AC_DEFINE(CPU_CISC, 1,
	[Define if building for a CISC machine (e.g. Intel).])
	AC_DEFINE(HAVE_X86, 1,
	[Define to use X86 inlined assembly code]);;
	* )
	AC_DEFINE(CPU_RISC, 1,
	[Define if building for a RISC machine (assume slow byte access).])
	;;
	esac

	dnl Check if we are on a Windows platform.
	case $host_os in
	cygwin\|mingw )
	EXE=.exe
	HOST_IS_WINDOWS=yes
	;;
	* )
	EXE=""
	;;
	esac
	AC_SUBST(EXE) # define executable suffix; this is needed for `make clean'


	dnl Checks for header files.
	AC_HEADER_STDC
	AC_CHECK_HEADERS(stdlib.h)
	AC_CHECK_HEADERS(unistd.h)
	AC_CHECK_HEADERS(byteswap.h)
	AC_CHECK_HEADERS(stdint.h)
	AC_CHECK_HEADERS(sys/uio.h)
	AC_CHECK_HEADERS(inttypes.h)
	AC_CHECK_HEADERS(sys/types.h)
	AC_CHECK_HEADERS(machine/types.h)
	AC_CHECK_HEADERS(sys/int_types.h)

	dnl socket() and friends
	AC_CHECK_HEADERS(sys/socket.h netinet/in.h arpa/inet.h)
	AC_CHECK_HEADERS(windows.h, [AC_CHECK_HEADERS(winsock2.h)])

	AC_CHECK_TYPES([int8_t,uint8_t,int16_t,uint16_t,int32_t,uint32_t,uint64_t])
	AC_CHECK_SIZEOF(unsigned long)
	AC_CHECK_SIZEOF(unsigned long long)

	dnl Checks for typedefs, structures, and compiler characteristics.
	AC_C_CONST
	AC_C_INLINE
	AC_TYPE_SIZE_T

	dnl Checks for library functions.
	AC_CHECK_FUNCS(socket inet_aton usleep sigaction)

	dnl Find socket function if not found yet.
	if test "x$ac_cv_func_socket" = "xno"; then
	AC_CHECK_LIB(socket, socket)
	AC_MSG_CHECKING([for socket in -lwsock32])
	SAVELIBS="$LIBS"
	LIBS="$LIBS -lwsock32"
	AC_LINK_IFELSE([AC_LANG_PROGRAM([[
	#include <winsock2.h>
	]], [[
	socket(0, 0, 0);
	]])],[ac_cv_func_socket=yes
	AC_MSG_RESULT(yes)],[LIBS="$SAVELIBS"
	AC_MSG_RESULT(no)])
	fi

	AC_MSG_CHECKING(whether to compile in debugging)
	AC_ARG_ENABLE(debug,
	[AS_HELP_STRING([--disable-debug],
	[do not compile in dynamic debugging system])],
	[], enable_debug=yes)
	if test "$enable_debug" = "yes"; then
	AC_DEFINE(ENABLE_DEBUGGING, 1,
	[Define to compile in dynamic debugging system.])
	fi
	AC_MSG_RESULT($enable_debug)

	AC_MSG_CHECKING(whether to use ISMAcryp code)
	AC_ARG_ENABLE(generic-aesicm,
	[AS_HELP_STRING([--enable-generic-aesicm],
	[compile in changes for ISMAcryp])],
	[], enable_generic_aesicm=no)
	if test "$enable_generic_aesicm" = "yes"; then
	AC_DEFINE(GENERIC_AESICM, 1, [Define this to use ISMAcryp code.])
	fi
	AC_MSG_RESULT($enable_generic_aesicm)

	PKG_PROG_PKG_CONFIG

	AC_MSG_CHECKING(whether to leverage OpenSSL crypto)
	AC_ARG_ENABLE(openssl,
	[AS_HELP_STRING([--enable-openssl],
	[compile in OpenSSL crypto engine])],
	[], enable_openssl=no)
	AC_MSG_RESULT($enable_openssl)
	if test "$enable_openssl" = "yes"; then
	AC_MSG_CHECKING(for user specified OpenSSL directory)
	AC_ARG_WITH(openssl-dir,
	[AS_HELP_STRING([--with-openssl-dir], [Location of OpenSSL installation])],
	[openssl_dir="$withval"], openssl_dir="")

	LDFLAGS="$LDFLAGS -L$openssl_dir/lib $($PKG_CONFIG --libs openssl)";
	CFLAGS="$CFLAGS -I$openssl_dir/include $($PKG_CONFIG --cflags openssl)";

	AC_CHECK_LIB([dl], [dlopen], [],
	[AC_MSG_WARN([can't find libdl])])
	AC_CHECK_LIB([z], [inflate], [],
	[AC_MSG_WARN([can't find libz])])
	AC_CHECK_LIB([crypto], [EVP_EncryptInit], [],
	[AC_MSG_FAILURE([can't find openssl >1.0.1 crypto lib])])
	AC_CHECK_LIB([crypto], [EVP_aes_128_ctr], [],
	[AC_MSG_FAILURE([can't find openssl >1.0.1 crypto lib])])
	AC_CHECK_LIB([crypto], [EVP_aes_128_gcm], [],
	[AC_MSG_FAILURE([can't find openssl >1.0.1 crypto lib])])
	AC_DEFINE(OPENSSL, 1, [Define this to use OpenSSL crypto.])
	AES_ICM_OBJS="crypto/cipher/aes_icm_ossl.o crypto/cipher/aes_gcm_ossl.o"
	HMAC_OBJS=crypto/hash/hmac_ossl.o
	USE_OPENSSL=1
	AC_SUBST(USE_OPENSSL)

	AC_MSG_CHECKING(whether to leverage OpenSSL KDF algorithm)
	AC_ARG_ENABLE(openssl-kdf,
	[AS_HELP_STRING([--enable-openssl-kdf], [Use OpenSSL KDF algorithm])],
	[], enable_openssl_kdf=no)
	AC_MSG_RESULT($enable_openssl_kdf)
	if test "$enable_openssl_kdf" = "yes"; then
	AC_CHECK_LIB([crypto], [kdf_srtp], [],
	[AC_MSG_FAILURE([can't find openssl KDF lib])])
	AC_DEFINE(OPENSSL_KDF, 1, [Define this to use OpenSSL KDF for SRTP.])
	fi
	else
	AES_ICM_OBJS="crypto/cipher/aes_icm.o crypto/cipher/aes.o"
	HMAC_OBJS="crypto/hash/hmac.o crypto/hash/sha1.o"
	fi
	AC_SUBST(AES_ICM_OBJS)
	AC_SUBST(HMAC_OBJS)

	dnl Checking for PCAP
	AC_CHECK_LIB([pcap],[pcap_create],
	[PCAP=1
	LIBS="-lpcap $LIBS"
	HAVE_PCAP=1
	AC_DEFINE(HAVE_PCAP, 1, [Define to 1 if you have the `pcap' library (-lpcap)])
	AC_SUBST(HAVE_PCAP)
	])

	AC_MSG_CHECKING(whether to use stdout for error reporting)
	AC_ARG_ENABLE(stdout,
	[AS_HELP_STRING([--enable-stdout], [use stdout for debug/error reporting])],
	[], enable_stdout=no)
	if test "$enable_stdout" = "yes"; then
	AC_DEFINE(ERR_REPORTING_STDOUT, 1, [Define to use logging to stdout.])
	fi
	AC_MSG_RESULT($enable_stdout)

	AC_MSG_CHECKING(whether to use /dev/console for error reporting)
	AC_ARG_ENABLE(console,
	[AS_HELP_STRING([--enable-console], [use /dev/console for error reporting])],
	[], enable_console=no)
	if test "$enable_console" = "yes"; then
	AC_DEFINE(USE_ERR_REPORTING_FILE, 1, [Write errors to this file])
	AC_DEFINE(ERR_REPORTING_FILE, "/dev/console", [Report errors to this file.])
	fi
	AC_MSG_RESULT($enable_console)

	AC_CONFIG_HEADER(crypto/include/config.h:config_in.h)

	if test "x$PKG_CONFIG" != "x"; then
	HAVE_PKG_CONFIG=1
	AC_CONFIG_FILES([libsrtp2.pc])
	else
	HAVE_PKG_CONFIG=0
	fi
	AC_SUBST(HAVE_PKG_CONFIG)
	AC_CONFIG_FILES([Makefile crypto/Makefile doc/Makefile])
	AC_OUTPUT

	# This is needed when building outside the source dir.
	AS_MKDIR_P(crypto/cipher)
	AS_MKDIR_P(crypto/hash)
	AS_MKDIR_P(crypto/kernel)
	AS_MKDIR_P(crypto/math)
	AS_MKDIR_P(crypto/replay)
	AS_MKDIR_P(crypto/test)
	AS_MKDIR_P(doc)
	AS_MKDIR_P(srtp)
	AS_MKDIR_P(test)