project(tcpdump)
+#
+# OK, this is a royal pain.
+#
+# CMake will try to determine the sizes of some data types, including
+# void *, early in the process of configuration; apparently, it's done
+# as part of processing the project() command.
+#
+# At least as of CMake 2.8.6, it does so by checking the size of
+# "void *" in C, setting CMAKE_C_SIZEOF_DATA_PTR based on that,
+# setting CMAKE_SIZEOF_VOID_P to that, and then checking the size
+# of "void *" in C++, setting CMAKE_CXX_SIZEOF_DATA_PTR based on
+# that, and then setting CMAKE_SIZEOF_VOID_P to *that*.
+#
+# The compile tests include whatever C flags may have been provided
+# to CMake in the CFLAGS and CXXFLAGS environment variables.
+#
+# If you set an architecture flag such as -m32 or -m64 in CFLAGS
+# but *not* in CXXFLAGS, the size for C++ will win, and hilarity
+# will ensue.
+#
+# Make sure CMAKE_C_SIZEOF_DATA_PTR and CMAKE_CXX_SIZEOF_DATA_PTR
+# have the same value, and warn if they don't.
+#
+# Yes, we have to do this even though there is currently *NO* C++
+# code in tcpdump....
+#
+if(NOT "${CMAKE_C_SIZEOF_DATA_PTR}" EQUAL "${CMAKE_CXX_SIZEOF_DATA_PTR}")
+ message(FATAL_ERROR "Architecture flags must be set in both CFLAGS and CXXFLAGS")
+endif()
+
#
# For checking if a compiler flag works and adding it if it does.
#
# Found - use it to get the include flags for
# libpcap and the flags to link with libpcap.
#
- # If this is a system-supplied pcap-config, which
- # we define as being "a pcap-config in /usr/bin",
- # there are some issues. Work around them.
+ # If this is a vendor-supplied pcap-config, which
+ # we define as being "a pcap-config in /usr/bin
+ # or /usr/ccs/bin" (the latter is for Solaris and
+ # Sun/Oracle Studio), there are some issues. Work
+ # around them.
#
- if test "$PCAP_CONFIG" = "/usr/bin/pcap-config" ; then
+ if test \( "$PCAP_CONFIG" = "/usr/bin/pcap-config" \) -o \
+ \( "$PCAP_CONFIG" = "/usr/ccs/bin/pcap-config" \) ; then
#
- # It's /usr/bin/pcap-config.
+ # It's vendor-supplied.
#
case "$host_os" in
#
_broken_apple_pcap_config=yes
;;
+
+ solaris*)
+ #
+ # This is Solaris 2 or later, i.e. SunOS 5.x.
+ #
+ # At least on Solaris 11; there's /usr/bin/pcap-config,
+ # which reports -L/usr/lib with --libs, causing
+ # the 32-bit libraries to be found, and there's
+ # /usr/bin/{64bitarch}/pcap-config, where {64bitarch}
+ # is a name for the 64-bit version of the instruction
+ # set, which reports -L /usr/lib/{64bitarch}, causing
+ # the 64-bit libraries to be found.
+ #
+ # So if we're building 64-bit targets, we replace
+ # PCAP_CONFIG with /usr/bin/{64bitarch}; we get
+ # {64bitarch} as the output of "isainfo -n".
+ #
+ # Are we building 32-bit or 64-bit? Get the
+ # size of void *, and check that.
+ #
+ AC_CHECK_SIZEOF([void *])
+ if test ac_cv_sizeof_void_p -eq 8 ; then
+ isainfo_output=`isainfo -n`
+ if test ! -z "$isainfo_output" ; then
+ #
+ # Success - change PCAP_CONFIG.
+ #
+ PCAP_CONFIG=`echo $PCAP_CONFIG | sed "s;/bin/;/bin/$isainfo_output/;"`
+ fi
+ fi
+ ;;
esac
fi
#
endif()
#
- # if this is macOS or some other Darwin-based OS, check whether
- # it's the system-supplied one.
+ # If this is a vendor-supplied pcap-config, which we define as
+ # being "a pcap-config in /usr/bin or /usr/ccs/bin" (the latter
+ # is for Solaris and Sun/Oracle Studio), there are some issues.
+ # Work around them.
#
- if(APPLE AND "${PCAP_CONFIG}" STREQUAL /usr/bin/pcap-config)
+ if("${PCAP_CONFIG}" STREQUAL /usr/bin/pcap-config OR
+ "${PCAP_CONFIG}" STREQUAL /usr/ccs/bin/pcap-config)
#
- # It is - remember that, so that if it provides -I/usr/local/include
- # with --cflags, or -L/usr/local/lib with --libs, we ignore it;
- # the macOS pcap-config does that even though the headers aren't
- # under /usr/local/include and the library isn't in /usr/local/lib.
+ # It's vendor-supplied.
#
- set(_broken_apple_pcap_config TRUE)
+ if(APPLE)
+ #
+ # This is macOS or another Darwin-based OS.
+ #
+ # That means that /usr/bin/pcap-config it may provide
+ # -I/usr/local/include with --cflags and -L/usr/local/lib
+ # with --libs; if there's no pcap installed under /usr/local,
+ # that will cause the build to fail, and if there is a pcap
+ # installed there, you'll get that pcap even if you don't
+ # want it. Remember that, so we ignore those values.
+ #
+ set(_broken_apple_pcap_config TRUE)
+ elseif(CMAKE_SYSTEM_NAME STREQUAL "SunOS" AND CMAKE_SYSTEM_VERSION MATCHES "5[.][0-9.]*")
+ #
+ # This is Solaris 2 or later, i.e. SunOS 5.x.
+ #
+ # At least on Solaris 11; there's /usr/bin/pcap-config, which
+ # reports -L/usr/lib with --libs, causing the 32-bit libraries
+ # to be found, and there's /usr/bin/{64bitarch}/pcap-config,
+ # where {64bitarch} is a name for the 64-bit version of the
+ # instruction set, which reports -L /usr/lib/{64bitarch},
+ # causing the 64-bit libraries to be found.
+ #
+ # So if we're building 64-bit targets, we replace PCAP_CONFIG
+ # with /usr/bin/{64bitarch}; we get {64bitarch} as the
+ # output of "isainfo -n".
+ #
+ if(CMAKE_SIZEOF_VOID_P EQUAL 8)
+ execute_process(COMMAND "isainfo" "-n"
+ RESULT_VARIABLE ISAINFO_RESULT
+ OUTPUT_VARIABLE ISAINFO_OUTPUT
+ OUTPUT_STRIP_TRAILING_WHITESPACE
+ )
+ if(ISAINFO_RESULT EQUAL 0)
+ #
+ # Success - change PCAP_CONFIG.
+ #
+ string(REPLACE "/bin/" "/bin/${ISAINFO_OUTPUT}/" PCAP_CONFIG "${PCAP_CONFIG}")
+ endif()
+ endif()
+ endif()
endif()
#
/* Define to the version of this package. */
#undef PACKAGE_VERSION
+/* The size of `void *', as computed by sizeof. */
+#undef SIZEOF_VOID_P
+
/* Define to 1 if you have the ANSI C header files. */
#undef STDC_HEADERS
} # ac_fn_c_check_func
+# ac_fn_c_compute_int LINENO EXPR VAR INCLUDES
+# --------------------------------------------
+# Tries to find the compile-time value of EXPR in a program that includes
+# INCLUDES, setting VAR accordingly. Returns whether the value could be
+# computed
+ac_fn_c_compute_int ()
+{
+ as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+ if test "$cross_compiling" = yes; then
+ # Depending upon the size, compute the lo and hi bounds.
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+$4
+int
+main ()
+{
+static int test_array [1 - 2 * !(($2) >= 0)];
+test_array [0] = 0;
+return test_array [0];
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ ac_lo=0 ac_mid=0
+ while :; do
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+$4
+int
+main ()
+{
+static int test_array [1 - 2 * !(($2) <= $ac_mid)];
+test_array [0] = 0;
+return test_array [0];
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ ac_hi=$ac_mid; break
+else
+ as_fn_arith $ac_mid + 1 && ac_lo=$as_val
+ if test $ac_lo -le $ac_mid; then
+ ac_lo= ac_hi=
+ break
+ fi
+ as_fn_arith 2 '*' $ac_mid + 1 && ac_mid=$as_val
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ done
+else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+$4
+int
+main ()
+{
+static int test_array [1 - 2 * !(($2) < 0)];
+test_array [0] = 0;
+return test_array [0];
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ ac_hi=-1 ac_mid=-1
+ while :; do
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+$4
+int
+main ()
+{
+static int test_array [1 - 2 * !(($2) >= $ac_mid)];
+test_array [0] = 0;
+return test_array [0];
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ ac_lo=$ac_mid; break
+else
+ as_fn_arith '(' $ac_mid ')' - 1 && ac_hi=$as_val
+ if test $ac_mid -le $ac_hi; then
+ ac_lo= ac_hi=
+ break
+ fi
+ as_fn_arith 2 '*' $ac_mid && ac_mid=$as_val
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ done
+else
+ ac_lo= ac_hi=
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+# Binary search between lo and hi bounds.
+while test "x$ac_lo" != "x$ac_hi"; do
+ as_fn_arith '(' $ac_hi - $ac_lo ')' / 2 + $ac_lo && ac_mid=$as_val
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+$4
+int
+main ()
+{
+static int test_array [1 - 2 * !(($2) <= $ac_mid)];
+test_array [0] = 0;
+return test_array [0];
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ ac_hi=$ac_mid
+else
+ as_fn_arith '(' $ac_mid ')' + 1 && ac_lo=$as_val
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+done
+case $ac_lo in #((
+?*) eval "$3=\$ac_lo"; ac_retval=0 ;;
+'') ac_retval=1 ;;
+esac
+ else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+$4
+static long int longval () { return $2; }
+static unsigned long int ulongval () { return $2; }
+#include <stdio.h>
+#include <stdlib.h>
+int
+main ()
+{
+
+ FILE *f = fopen ("conftest.val", "w");
+ if (! f)
+ return 1;
+ if (($2) < 0)
+ {
+ long int i = longval ();
+ if (i != ($2))
+ return 1;
+ fprintf (f, "%ld", i);
+ }
+ else
+ {
+ unsigned long int i = ulongval ();
+ if (i != ($2))
+ return 1;
+ fprintf (f, "%lu", i);
+ }
+ /* Do not output a trailing newline, as this causes \r\n confusion
+ on some platforms. */
+ return ferror (f) || fclose (f) != 0;
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"; then :
+ echo >>conftest.val; read $3 <conftest.val; ac_retval=0
+else
+ ac_retval=1
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+ conftest.$ac_objext conftest.beam conftest.$ac_ext
+rm -f conftest.val
+
+ fi
+ eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+ as_fn_set_status $ac_retval
+
+} # ac_fn_c_compute_int
+
# ac_fn_c_check_decl LINENO SYMBOL VAR INCLUDES
# ---------------------------------------------
# Tests whether SYMBOL is declared in INCLUDES, setting cache variable VAR
# Found - use it to get the include flags for
# libpcap and the flags to link with libpcap.
#
- # If this is a system-supplied pcap-config, which
- # we define as being "a pcap-config in /usr/bin",
- # there are some issues. Work around them.
+ # If this is a vendor-supplied pcap-config, which
+ # we define as being "a pcap-config in /usr/bin
+ # or /usr/ccs/bin" (the latter is for Solaris and
+ # Sun/Oracle Studio), there are some issues. Work
+ # around them.
#
- if test "$PCAP_CONFIG" = "/usr/bin/pcap-config" ; then
+ if test \( "$PCAP_CONFIG" = "/usr/bin/pcap-config" \) -o \
+ \( "$PCAP_CONFIG" = "/usr/ccs/bin/pcap-config" \) ; then
#
- # It's /usr/bin/pcap-config.
+ # It's vendor-supplied.
#
case "$host_os" in
#
_broken_apple_pcap_config=yes
;;
+
+ solaris*)
+ #
+ # This is Solaris 2 or later, i.e. SunOS 5.x.
+ #
+ # At least on Solaris 11; there's /usr/bin/pcap-config,
+ # which reports -L/usr/lib with --libs, causing
+ # the 32-bit libraries to be found, and there's
+ # /usr/bin/{64bitarch}/pcap-config, where {64bitarch}
+ # is a name for the 64-bit version of the instruction
+ # set, which reports -L /usr/lib/{64bitarch}, causing
+ # the 64-bit libraries to be found.
+ #
+ # So if we're building 64-bit targets, we replace
+ # PCAP_CONFIG with /usr/bin/{64bitarch}; we get
+ # {64bitarch} as the output of "isainfo -n".
+ #
+ # Are we building 32-bit or 64-bit? Get the
+ # size of void *, and check that.
+ #
+ # The cast to long int works around a bug in the HP C Compiler
+# version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
+# declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
+# This bug is HP SR number 8606223364.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking size of void *" >&5
+$as_echo_n "checking size of void *... " >&6; }
+if ${ac_cv_sizeof_void_p+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (void *))" "ac_cv_sizeof_void_p" "$ac_includes_default"; then :
+
+else
+ if test "$ac_cv_type_void_p" = yes; then
+ { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error 77 "cannot compute sizeof (void *)
+See \`config.log' for more details" "$LINENO" 5; }
+ else
+ ac_cv_sizeof_void_p=0
+ fi
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_void_p" >&5
+$as_echo "$ac_cv_sizeof_void_p" >&6; }
+
+
+
+cat >>confdefs.h <<_ACEOF
+#define SIZEOF_VOID_P $ac_cv_sizeof_void_p
+_ACEOF
+
+
+ if test ac_cv_sizeof_void_p -eq 8 ; then
+ isainfo_output=`isainfo -n`
+ if test ! -z "$isainfo_output" ; then
+ #
+ # Success - change PCAP_CONFIG.
+ #
+ PCAP_CONFIG=`echo $PCAP_CONFIG | sed "s;/bin/;/bin/$isainfo_output/;"`
+ fi
+ fi
+ ;;
esac
fi
#
projects / tcpdump / commitdiff
