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# Copyright (C) 1996-2013 Free Software Foundation, Inc.
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to enable maintainer-specific portions of Makefiles" >&5
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+set dummy $CC; ac_cc=`$as_echo "$2" |
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+if eval \${ac_cv_prog_cc_${ac_cc}_c_o+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+# Make sure it works both with $CC and with simple cc.
+# We do the test twice because some compilers refuse to overwrite an
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+ac_try='$CC -c conftest.$ac_ext -o conftest2.$ac_objext >&5'
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+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
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+ ac_status=$?
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+ test -f conftest2.$ac_objext && { { case "(($ac_try" in
+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+ *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+ (eval "$ac_try") 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; };
+then
+ eval ac_cv_prog_cc_${ac_cc}_c_o=yes
+ if test "x$CC" != xcc; then
+ # Test first that cc exists at all.
+ if { ac_try='cc -c conftest.$ac_ext >&5'
+ { { case "(($ac_try" in
+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
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+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+ (eval "$ac_try") 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; }; then
+ ac_try='cc -c conftest.$ac_ext -o conftest2.$ac_objext >&5'
+ rm -f conftest2.*
+ if { { case "(($ac_try" in
+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+ *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+ (eval "$ac_try") 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; } &&
+ test -f conftest2.$ac_objext && { { case "(($ac_try" in
+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+ *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+ (eval "$ac_try") 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; };
+ then
+ # cc works too.
+ :
+ else
+ # cc exists but doesn't like -o.
+ eval ac_cv_prog_cc_${ac_cc}_c_o=no
+ fi
+ fi
+ fi
+else
+ eval ac_cv_prog_cc_${ac_cc}_c_o=no
+fi
+rm -f core conftest*
+
+fi
+if eval test \$ac_cv_prog_cc_${ac_cc}_c_o = yes; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+
+$as_echo "#define NO_MINUS_C_MINUS_O 1" >>confdefs.h
+
+fi
+
+# FIXME: we rely on the cache variable name because
+# there is no other way.
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+am_cc=`echo $2 | sed 's/[^a-zA-Z0-9_]/_/g;s/^[0-9]/_/'`
+eval am_t=\$ac_cv_prog_cc_${am_cc}_c_o
+if test "$am_t" != yes; then
+ # Losing compiler, so override with the script.
+ # FIXME: It is wrong to rewrite CC.
+ # But if we don't then we get into trouble of one sort or another.
+ # A longer-term fix would be to have automake use am__CC in this case,
+ # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
+ CC="$am_aux_dir/compile $CC"
+fi
+
# Macros to detect C compiler features
-# $PostgreSQL: pgsql/config/c-compiler.m4,v 1.19 2008/06/27 00:36:16 tgl Exp $
+# config/c-compiler.m4
# PGAC_C_SIGNED
+# PGAC_C_PRINTF_ARCHETYPE
+# -----------------------
+# Select the format archetype to be used by gcc to check printf-type functions.
+# We prefer "gnu_printf", as that most closely matches the features supported
+# by src/port/snprintf.c (particularly the %m conversion spec). However,
+# on some NetBSD versions, that doesn't work while "__syslog__" does.
+# If all else fails, use "printf".
+# PGAC_PRINTF_ARCHETYPE
+
+# Subroutine: test $pgac_cv_printf_archetype, set $ac_archetype_ok to yes or no
+# PGAC_TEST_PRINTF_ARCHETYPE
+
+
# PGAC_TYPE_64BIT_INT(TYPE)
# -------------------------
# Check if TYPE is a working 64 bit integer type. Set HAVE_TYPE_64 to
# PGAC_TYPE_64BIT_INT
+# PGAC_TYPE_128BIT_INT
+# ---------------------
+# Check if __int128 is a working 128 bit integer type, and if so
+# define PG_INT128_TYPE to that typename, and define ALIGNOF_PG_INT128_TYPE
+# as its alignment requirement.
+#
+# This currently only detects a GCC/clang extension, but support for other
+# environments may be added in the future.
+#
+# For the moment we only test for support for 128bit math; support for
+# 128bit literals and snprintf is not required.
+# PGAC_TYPE_128BIT_INT
+
# PGAC_C_FUNCNAME_SUPPORT
# -----------------------
+# PGAC_C_STATIC_ASSERT
+# --------------------
+# Check if the C compiler understands _Static_assert(),
+# and define HAVE__STATIC_ASSERT if so.
+#
+# We actually check the syntax ({ _Static_assert(...) }), because we need
+# gcc-style compound expressions to be able to wrap the thing into macros.
+# PGAC_C_STATIC_ASSERT
+
+
+
+# PGAC_C_TYPEOF
+# -------------
+# Check if the C compiler understands typeof or a variant. Define
+# HAVE_TYPEOF if so, and define 'typeof' to the actual key word.
+#
+# PGAC_C_TYPEOF
+
+
+
+# PGAC_C_TYPES_COMPATIBLE
+# -----------------------
+# Check if the C compiler understands __builtin_types_compatible_p,
+# and define HAVE__BUILTIN_TYPES_COMPATIBLE_P if so.
+#
+# We check usage with __typeof__, though it's unlikely any compiler would
+# have the former and not the latter.
+# PGAC_C_TYPES_COMPATIBLE
+
+
+# PGAC_C_BUILTIN_CONSTANT_P
+# -------------------------
+# Check if the C compiler understands __builtin_constant_p(),
+# and define HAVE__BUILTIN_CONSTANT_P if so.
+# We need __builtin_constant_p("string literal") to be true, but some older
+# compilers don't think that, so test for that case explicitly.
+# PGAC_C_BUILTIN_CONSTANT_P
+
+
+
+# PGAC_C_BUILTIN_OP_OVERFLOW
+# -------------------------
+# Check if the C compiler understands __builtin_$op_overflow(),
+# and define HAVE__BUILTIN_OP_OVERFLOW if so.
+#
+# Check for the most complicated case, 64 bit multiplication, as a
+# proxy for all of the operations. To detect the case where the compiler
+# knows the function but library support is missing, we must link not just
+# compile, and store the results in global variables so the compiler doesn't
+# optimize away the call.
+# PGAC_C_BUILTIN_OP_OVERFLOW
+
+
+
+# PGAC_C_BUILTIN_UNREACHABLE
+# --------------------------
+# Check if the C compiler understands __builtin_unreachable(),
+# and define HAVE__BUILTIN_UNREACHABLE if so.
+#
+# NB: Don't get the idea of putting a for(;;); or such before the
+# __builtin_unreachable() call. Some compilers would remove it before linking
+# and only a warning instead of an error would be produced.
+# PGAC_C_BUILTIN_UNREACHABLE
+
+
+
+# PGAC_C_COMPUTED_GOTO
+# -----------------------
+# Check if the C compiler knows computed gotos (gcc extension, also
+# available in at least clang). If so, define HAVE_COMPUTED_GOTO.
+#
+# Checking whether computed gotos are supported syntax-wise ought to
+# be enough, as the syntax is otherwise illegal.
+# PGAC_C_COMPUTED_GOTO
+
+
+
+# PGAC_CHECK_BUILTIN_FUNC
+# -----------------------
+# This is similar to AC_CHECK_FUNCS(), except that it will work for compiler
+# builtin functions, as that usually fails to.
+# The first argument is the function name, eg [__builtin_clzl], and the
+# second is its argument list, eg [unsigned long x]. The current coding
+# works only for a single argument named x; we might generalize that later.
+# It's assumed that the function's result type is coercible to int.
+# On success, we define "HAVEfuncname" (there's usually more than enough
+# underscores already, so we don't add another one).
+# PGAC_CHECK_BUILTIN_FUNC
+
+
+
+# PGAC_PROG_VARCC_VARFLAGS_OPT
+# -----------------------
+# Given a compiler, variable name and a string, check if the compiler
+# supports the string as a command-line option. If it does, add the
+# string to the given variable.
+# PGAC_PROG_VARCC_VARFLAGS_OPT
+
+
+
# PGAC_PROG_CC_CFLAGS_OPT
# -----------------------
# Given a string, check if the compiler supports the string as a
+# PGAC_PROG_CC_VAR_OPT
+# -----------------------
+# Given a variable name and a string, check if the compiler supports
+# the string as a command-line option. If it does, add the string to
+# the given variable.
+# PGAC_PROG_CC_VAR_OPT
+
+
+
+# PGAC_PROG_VARCXX_VARFLAGS_OPT
+# -----------------------
+# Given a compiler, variable name and a string, check if the compiler
+# supports the string as a command-line option. If it does, add the
+# string to the given variable.
+# PGAC_PROG_VARCXX_VARFLAGS_OPT
+
+
+
+# PGAC_PROG_CXX_CFLAGS_OPT
+# -----------------------
+# Given a string, check if the compiler supports the string as a
+# command-line option. If it does, add the string to CXXFLAGS.
+# PGAC_PROG_CXX_VAR_OPT
+
+
+
# PGAC_PROG_CC_LDFLAGS_OPT
# ------------------------
# Given a string, check if the compiler supports the string as a
# In fact, we must actually check that the resulting program runs :-(
# PGAC_PROG_CC_LDFLAGS_OPT
+# PGAC_HAVE_GCC__SYNC_CHAR_TAS
+# -------------------------
+# Check if the C compiler understands __sync_lock_test_and_set(char),
+# and define HAVE_GCC__SYNC_CHAR_TAS
+#
+# NB: There are platforms where test_and_set is available but compare_and_swap
+# is not, so test this separately.
+# NB: Some platforms only do 32bit tas, others only do 8bit tas. Test both.
+# PGAC_HAVE_GCC__SYNC_CHAR_TAS
+
+# PGAC_HAVE_GCC__SYNC_INT32_TAS
+# -------------------------
+# Check if the C compiler understands __sync_lock_test_and_set(),
+# and define HAVE_GCC__SYNC_INT32_TAS
+# PGAC_HAVE_GCC__SYNC_INT32_TAS
+
+# PGAC_HAVE_GCC__SYNC_INT32_CAS
+# -------------------------
+# Check if the C compiler understands __sync_compare_and_swap() for 32bit
+# types, and define HAVE_GCC__SYNC_INT32_CAS if so.
+# PGAC_HAVE_GCC__SYNC_INT32_CAS
+
+# PGAC_HAVE_GCC__SYNC_INT64_CAS
+# -------------------------
+# Check if the C compiler understands __sync_compare_and_swap() for 64bit
+# types, and define HAVE_GCC__SYNC_INT64_CAS if so.
+# PGAC_HAVE_GCC__SYNC_INT64_CAS
+
+# PGAC_HAVE_GCC__ATOMIC_INT32_CAS
+# -------------------------
+# Check if the C compiler understands __atomic_compare_exchange_n() for 32bit
+# types, and define HAVE_GCC__ATOMIC_INT32_CAS if so.
+# PGAC_HAVE_GCC__ATOMIC_INT32_CAS
+
+# PGAC_HAVE_GCC__ATOMIC_INT64_CAS
+# -------------------------
+# Check if the C compiler understands __atomic_compare_exchange_n() for 64bit
+# types, and define HAVE_GCC__ATOMIC_INT64_CAS if so.
+# PGAC_HAVE_GCC__ATOMIC_INT64_CAS
+
+# PGAC_SSE42_CRC32_INTRINSICS
+# -----------------------
+# Check if the compiler supports the x86 CRC instructions added in SSE 4.2,
+# using the _mm_crc32_u8 and _mm_crc32_u32 intrinsic functions. (We don't
+# test the 8-byte variant, _mm_crc32_u64, but it is assumed to be present if
+# the other ones are, on x86-64 platforms)
+#
+# An optional compiler flag can be passed as argument (e.g. -msse4.2). If the
+# intrinsics are supported, sets pgac_sse42_crc32_intrinsics, and CFLAGS_SSE42.
+# PGAC_SSE42_CRC32_INTRINSICS
+
+
+# PGAC_ARMV8_CRC32C_INTRINSICS
+# -----------------------
+# Check if the compiler supports the CRC32C instructions using the __crc32cb,
+# __crc32ch, __crc32cw, and __crc32cd intrinsic functions. These instructions
+# were first introduced in ARMv8 in the optional CRC Extension, and became
+# mandatory in ARMv8.1.
+#
+# An optional compiler flag can be passed as argument (e.g.
+# -march=armv8-a+crc). If the intrinsics are supported, sets
+# pgac_armv8_crc32c_intrinsics, and CFLAGS_ARMV8_CRC32C.
+# PGAC_ARMV8_CRC32C_INTRINSICS
# Macros that test various C library quirks
# $PostgreSQL: pgsql/config/c-library.m4,v 1.33 2008/08/21 13:53:28 petere Exp $
return 0;
return 1;
}
+
+int
main() {
- exit(! does_int64_work());
+ return (! does_int64_work());
}
_ACEOF
if ac_fn_c_try_run "$LINENO"; then :
return 0;
return 1;
}
+
+int
main() {
- exit(! does_int64_work());
+ return (! does_int64_work());
}
_ACEOF
if ac_fn_c_try_run "$LINENO"; then :
UINT64_FORMAT='"%lu"'
fi
+# disable useless truncation warnings from gcc 8+
+NOT_THE_CFLAGS=""
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ${CC} supports -Wformat-truncation, for NOT_THE_CFLAGS" >&5
+$as_echo_n "checking whether ${CC} supports -Wformat-truncation, for NOT_THE_CFLAGS... " >&6; }
+if ${pgac_cv_prog_CC_cflags__Wformat_truncation+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ pgac_save_CFLAGS=$CFLAGS
+pgac_save_CC=$CC
+CC=${CC}
+CFLAGS="${NOT_THE_CFLAGS} -Wformat-truncation"
+ac_save_c_werror_flag=$ac_c_werror_flag
+ac_c_werror_flag=yes
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ pgac_cv_prog_CC_cflags__Wformat_truncation=yes
+else
+ pgac_cv_prog_CC_cflags__Wformat_truncation=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ac_c_werror_flag=$ac_save_c_werror_flag
+CFLAGS="$pgac_save_CFLAGS"
+CC="$pgac_save_CC"
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $pgac_cv_prog_CC_cflags__Wformat_truncation" >&5
+$as_echo "$pgac_cv_prog_CC_cflags__Wformat_truncation" >&6; }
+if test x"$pgac_cv_prog_CC_cflags__Wformat_truncation" = x"yes"; then
+ NOT_THE_CFLAGS="${NOT_THE_CFLAGS} -Wformat-truncation"
+fi
+
+
+if test -n "$NOT_THE_CFLAGS"; then
+ CFLAGS="$CFLAGS -Wno-format-truncation"
+fi
+
cat >>confdefs.h <<_ACEOF
#define PACKAGE "$PACKAGE"
projects / pgpool2.git / commitdiff