dnl Process this file with autoconf to produce a configure script.

dnl configure.ac

dnl

dnl Developers, please strive to achieve this order:

dnl

dnl 0. Initialization and options processing

dnl 1. Programs

dnl 2. Libraries

dnl 3. Header files

dnl 4. Types

dnl 5. Structures

dnl 6. Compiler characteristics

dnl 7. Functions, global variables

dnl 8. System services

dnl

dnl Read the Autoconf manual for details.

dnl

m4_pattern_forbid(^PGAC_)dnl to catch undefined macros

AC_INIT([PostgreSQL], [17.2], [[email protected]], [], [https://www.postgresql.org/])

m4_if(m4_defn([m4_PACKAGE_VERSION]), [2.69], [], [m4_fatal([Autoconf version 2.69 is required.

Untested combinations of 'autoconf' and PostgreSQL versions are not

recommended. You can remove the check from 'configure.ac' but it is then

your responsibility whether the result works or not.])])

AC_COPYRIGHT([Copyright (c) 1996-2024, PostgreSQL Global Development Group])

AC_CONFIG_SRCDIR([src/backend/access/common/heaptuple.c])

AC_CONFIG_AUX_DIR(config)

AC_PREFIX_DEFAULT(/usr/local/pgsql)

AC_DEFINE_UNQUOTED(CONFIGURE_ARGS, ["$ac_configure_args"], [Saved arguments from configure])

# IvorySQL version

PACKAGE_IVORYSQL_VERSION='4.2'

[PG_MAJORVERSION=`expr "$PACKAGE_VERSION" : '\([0-9][0-9]*\)'`]

[PG_MINORVERSION=`expr "$PACKAGE_VERSION" : '.*\.\([0-9][0-9]*\)'`]

test -n "$PG_MINORVERSION" || PG_MINORVERSION=0

AC_SUBST(PG_MAJORVERSION)

AC_DEFINE_UNQUOTED(PG_MAJORVERSION, "$PG_MAJORVERSION", [PostgreSQL major version as a string])

AC_DEFINE_UNQUOTED(PG_MAJORVERSION_NUM, $PG_MAJORVERSION, [PostgreSQL major version number])

AC_DEFINE_UNQUOTED(PG_MINORVERSION_NUM, $PG_MINORVERSION, [PostgreSQL minor version number])

AC_DEFINE([PACKAGE_IVORYSQL_VERSION], $PACKAGE_IVORYSQL_VERSION , [IvorySQL version number])

PGAC_ARG_REQ(with, extra-version, [STRING], [append STRING to version],

[PG_VERSION="$PACKAGE_VERSION$withval"],

[PG_VERSION="$PACKAGE_VERSION"])

AC_DEFINE_UNQUOTED(PG_VERSION, "$PG_VERSION", [PostgreSQL version as a string])

AC_CANONICAL_HOST

template=

AC_MSG_CHECKING([which template to use])

PGAC_ARG_REQ(with, template, [NAME], [override operating system template],

[

case $withval in

list) echo; ls "$srcdir/src/template"; exit;;

*) if test -f "$srcdir/src/template/$with_template" ; then

template=$withval

else

AC_MSG_ERROR(['$withval' is not a valid template name. Use 'list' for a list.])

fi;;

esac

],

[

# --with-template not given

case $host_os in

cygwin*|msys*) template=cygwin ;;

darwin*) template=darwin ;;

dragonfly*) template=netbsd ;;

freebsd*) template=freebsd ;;

linux*|gnu*|k*bsd*-gnu)

template=linux ;;

mingw*) template=win32 ;;

netbsd*) template=netbsd ;;

openbsd*) template=openbsd ;;

solaris*) template=solaris ;;

esac

if test x"$template" = x"" ; then

AC_MSG_ERROR([[

*******************************************************************

PostgreSQL has apparently not been ported to your platform yet.

To try a manual configuration, look into the src/template directory

for a similar platform and use the '--with-template=' option.

Please also contact <]AC_PACKAGE_BUGREPORT[> to see about

rectifying this. Include the above 'checking host system type...'

line.

*******************************************************************

]])

fi

])

AC_MSG_RESULT([$template])

PORTNAME=$template

AC_SUBST(PORTNAME)

# Initialize default assumption that we do not need separate assembly code

# for TAS (test-and-set). This can be overridden by the template file

# when it's executed.

need_tas=no

tas_file=dummy.s

# Default, works for most platforms, override in template file if needed

DLSUFFIX=".so"

##

## Command line options

##

#

# Add non-standard directories to the include path

#

PGAC_ARG_REQ(with, includes, [DIRS], [look for additional header files in DIRS])

#

# Add non-standard directories to the library search path

#

PGAC_ARG_REQ(with, libraries, [DIRS], [look for additional libraries in DIRS],

[LIBRARY_DIRS=$withval])

PGAC_ARG_REQ(with, libs, [DIRS], [alternative spelling of --with-libraries],

[LIBRARY_DIRS=$withval])

#

# 64-bit integer date/time storage is now the only option, but to avoid

# unnecessary breakage of build scripts, continue to accept an explicit

# "--enable-integer-datetimes" switch.

#

PGAC_ARG_BOOL(enable, integer-datetimes, yes, [obsolete option, no longer supported],

[],

[AC_MSG_ERROR([--disable-integer-datetimes is no longer supported])])

#

# NLS

#

AC_MSG_CHECKING([whether NLS is wanted])

PGAC_ARG_OPTARG(enable, nls,

[LANGUAGES], [enable Native Language Support],

[],

[WANTED_LANGUAGES=$enableval],

[AC_DEFINE(ENABLE_NLS, 1,

[Define to 1 if you want National Language Support. (--enable-nls)])])

AC_MSG_RESULT([$enable_nls])

AC_SUBST(enable_nls)

AC_SUBST(WANTED_LANGUAGES)

#

# CURSOR_UNNAME

#

AC_MSG_CHECKING([whether CURSOR_UNNAME is wanted])

PGAC_ARG_BOOL(enable, cursor-unname,

no, [enable explicit cursor uname],

[AC_DEFINE(ENABLE_CURSOR_UNNAME, 1,

[Define to 1 if you want explicit cursor with unname. (--enable-cursor-uname)])])

#

# Default port number (--with-pgport), default 5432

#

AC_MSG_CHECKING([for default port number])

PGAC_ARG_REQ(with, pgport, [PORTNUM], [set default port number [5432]],

[default_port=$withval],

[default_port=5432])

AC_MSG_RESULT([$default_port])

# Need both of these because some places want an integer and some a string

AC_DEFINE_UNQUOTED(DEF_PGPORT, ${default_port},

[Define to the default TCP port number on which the server listens and

to which clients will try to connect. This can be overridden at run-time,

but it's convenient if your clients have the right default compiled in.

(--with-pgport=PORTNUM)])

AC_DEFINE_UNQUOTED(DEF_PGPORT_STR, "${default_port}",

[Define to the default TCP port number as a string constant.])

AC_SUBST(default_port)

# It's worth validating port; you can get very confusing errors otherwise

if test x"$default_port" = x""; then

AC_MSG_ERROR([invalid --with-pgport specification: empty string])

elif test ! x`echo "$default_port" | sed -e 's/[[0-9]]*//'` = x""; then

AC_MSG_ERROR([invalid --with-pgport specification: must be a number])

elif test ! x`echo "$default_port" | sed -e 's/^0.//'` = x"$default_port"; then

AC_MSG_ERROR([invalid --with-pgport specification: must not have leading 0])

elif test "$default_port" -lt "1" -o "$default_port" -gt "65535"; then

AC_MSG_ERROR([invalid --with-pgport specification: must be between 1 and 65535])

fi

# IvorySQL:BEGIN - IYHOST IYPORT

# Default port number (--with-oraport), default 1521

#

AC_MSG_CHECKING([for default port number in oracle compatible mode])

PGAC_ARG_REQ(with, oraport, [PORTNUM], [set default port number for oracle [1521]],

[default_ora_port=$withval],

[default_ora_port=1521])

AC_MSG_RESULT([$default_ora_port])

# Need both of these because some places want an integer and some a string

AC_DEFINE_UNQUOTED(DEF_ORAPORT, ${default_ora_port},

[Define to the default TCP port number on which the server listens and

to which clients will try to connect. This can be overridden at run-time,

but it's convenient if your clients have the right default compiled in.

(--with-oraport=PORTNUM)])

AC_DEFINE_UNQUOTED(DEF_ORAPORT_STR, "${default_ora_port}",

[Define to the default TCP port number as a string constant.])

AC_SUBST(default_ora_port)

# It's worth validating port; you can get very confusing errors otherwise

if test x"$default_ora_port" = x""; then

AC_MSG_ERROR([invalid --with-oraport specification: empty string])

elif test ! x`echo "$default_ora_port" | sed -e 's/[[0-9]]*//'` = x""; then

AC_MSG_ERROR([invalid --with-oraport specification: must be a number])

elif test ! x`echo "$default_ora_port" | sed -e 's/^0.//'` = x"$default_ora_port"; then

AC_MSG_ERROR([invalid --with-oraport specification: must not have leading 0])

elif test "$default_ora_port" -lt "1" -o "$default_ora_port" -gt "65535"; then

AC_MSG_ERROR([invalid --with-oraport specification: must be between 1 and 65535])

fi

# IvorySQL:END - IYHOST IYPORT

#

# '-rpath'-like feature can be disabled

#

PGAC_ARG_BOOL(enable, rpath, yes,

[do not embed shared library search path in executables])

AC_SUBST(enable_rpath)

#

# Spinlocks

#

PGAC_ARG_BOOL(enable, spinlocks, yes,

[do not use spinlocks])

#

# Atomic operations

#

PGAC_ARG_BOOL(enable, atomics, yes,

[do not use atomic operations])

#

# --enable-debug adds -g to compiler flags

#

PGAC_ARG_BOOL(enable, debug, no,

[build with debugging symbols (-g)])

AC_SUBST(enable_debug)

#

# --enable-profiling enables gcc profiling

#

PGAC_ARG_BOOL(enable, profiling, no,

[build with profiling enabled ])

#

# --enable-coverage enables generation of code coverage metrics with gcov

#

PGAC_ARG_BOOL(enable, coverage, no,

[build with coverage testing instrumentation],

[PGAC_PATH_PROGS(GCOV, gcov)

if test -z "$GCOV"; then

AC_MSG_ERROR([gcov not found])

fi

PGAC_PATH_PROGS(LCOV, lcov)

if test -z "$LCOV"; then

AC_MSG_ERROR([lcov not found])

fi

PGAC_PATH_PROGS(GENHTML, genhtml)

if test -z "$GENHTML"; then

AC_MSG_ERROR([genhtml not found])

fi])

AC_SUBST(enable_coverage)

#

# DTrace

#

PGAC_ARG_BOOL(enable, dtrace, no,

[build with DTrace support],

[PGAC_PATH_PROGS(DTRACE, dtrace)

if test -z "$DTRACE"; then

AC_MSG_ERROR([dtrace not found])

fi

AC_SUBST(DTRACEFLAGS)])

AC_SUBST(enable_dtrace)

#

# TAP tests

#

PGAC_ARG_BOOL(enable, tap-tests, no,

[enable TAP tests (requires Perl and IPC::Run)])

AC_SUBST(enable_tap_tests)

#

# Injection points

#

PGAC_ARG_BOOL(enable, injection-points, no, [enable injection points (for testing)],

[AC_DEFINE([USE_INJECTION_POINTS], 1, [Define to 1 to build with injection points. (--enable-injection-points)])])

AC_SUBST(enable_injection_points)

#

# Block size

#

AC_MSG_CHECKING([for block size])

PGAC_ARG_REQ(with, blocksize, [BLOCKSIZE], [set table block size in kB [8]],

[blocksize=$withval],

[blocksize=8])

case ${blocksize} in

1) BLCKSZ=1024;;

2) BLCKSZ=2048;;

4) BLCKSZ=4096;;

8) BLCKSZ=8192;;

16) BLCKSZ=16384;;

32) BLCKSZ=32768;;

*) AC_MSG_ERROR([Invalid block size. Allowed values are 1,2,4,8,16,32.])

esac

AC_MSG_RESULT([${blocksize}kB])

AC_DEFINE_UNQUOTED([BLCKSZ], ${BLCKSZ}, [

Size of a disk block --- this also limits the size of a tuple. You

can set it bigger if you need bigger tuples (although TOAST should

reduce the need to have large tuples, since fields can be spread

across multiple tuples).

BLCKSZ must be a power of 2. The maximum possible value of BLCKSZ

is currently 2^15 (32768). This is determined by the 15-bit widths

of the lp_off and lp_len fields in ItemIdData (see

include/storage/itemid.h).

Changing BLCKSZ requires an initdb.

])

#

# Relation segment size

#

PGAC_ARG_REQ(with, segsize, [SEGSIZE], [set table segment size in GB [1]],

[segsize=$withval],

[segsize=1])

PGAC_ARG_REQ(with, segsize-blocks, [SEGSIZE_BLOCKS], [set table segment size in blocks [0]],

[segsize_blocks=$withval],

[segsize_blocks=0])

# If --with-segsize-blocks is non-zero, it is used, --with-segsize

# otherwise. segsize-blocks is only really useful for developers wanting to

# test segment related code. Warn if both are used.

if test $segsize_blocks -ne 0 -a $segsize -ne 1; then

AC_MSG_WARN([both --with-segsize and --with-segsize-blocks specified, --with-segsize-blocks wins])

fi

AC_MSG_CHECKING([for segment size])

if test $segsize_blocks -eq 0; then

# this expression is set up to avoid unnecessary integer overflow

# blocksize is already guaranteed to be a factor of 1024

RELSEG_SIZE=`expr '(' 1024 / ${blocksize} ')' '*' ${segsize} '*' 1024`

test $? -eq 0 || exit 1

AC_MSG_RESULT([${segsize}GB])

else

RELSEG_SIZE=$segsize_blocks

AC_MSG_RESULT([${RELSEG_SIZE} blocks])

fi

AC_DEFINE_UNQUOTED([RELSEG_SIZE], ${RELSEG_SIZE}, [

RELSEG_SIZE is the maximum number of blocks allowed in one disk file.

Thus, the maximum size of a single file is RELSEG_SIZE * BLCKSZ;

relations bigger than that are divided into multiple files.

RELSEG_SIZE * BLCKSZ must be less than your OS' limit on file size.

This is often 2 GB or 4GB in a 32-bit operating system, unless you

have large file support enabled. By default, we make the limit 1 GB

to avoid any possible integer-overflow problems within the OS.

A limit smaller than necessary only means we divide a large

relation into more chunks than necessary, so it seems best to err

in the direction of a small limit.

A power-of-2 value is recommended to save a few cycles in md.c,

but is not absolutely required.

Changing RELSEG_SIZE requires an initdb.

])

#

# WAL block size

#

AC_MSG_CHECKING([for WAL block size])

PGAC_ARG_REQ(with, wal-blocksize, [BLOCKSIZE], [set WAL block size in kB [8]],

[wal_blocksize=$withval],

[wal_blocksize=8])

case ${wal_blocksize} in

1) XLOG_BLCKSZ=1024;;

2) XLOG_BLCKSZ=2048;;

4) XLOG_BLCKSZ=4096;;

8) XLOG_BLCKSZ=8192;;

16) XLOG_BLCKSZ=16384;;

32) XLOG_BLCKSZ=32768;;

64) XLOG_BLCKSZ=65536;;

*) AC_MSG_ERROR([Invalid WAL block size. Allowed values are 1,2,4,8,16,32,64.])

esac

AC_MSG_RESULT([${wal_blocksize}kB])

AC_DEFINE_UNQUOTED([XLOG_BLCKSZ], ${XLOG_BLCKSZ}, [

Size of a WAL file block. This need have no particular relation to BLCKSZ.

XLOG_BLCKSZ must be a power of 2, and if your system supports O_DIRECT I/O,

XLOG_BLCKSZ must be a multiple of the alignment requirement for direct-I/O

buffers, else direct I/O may fail.

Changing XLOG_BLCKSZ requires an initdb.

])

#

# Max function arguments

#

AC_MSG_CHECKING([for maximum number of arguments to a function])

PGAC_ARG_REQ(with, max-funarg, [MAXFUNARG], [set maximum number of function arguments[100]],

[max_funarg=$withval],

[max_funarg=100])

# The maximum value of function arguments is affected by blocksize

# Minimum check

if test $max_funarg -lt 8; then

AC_MSG_ERROR([minimum number of function arguments is 8.])

fi

# Maximum check

case ${blocksize} in

1 | 2 | 4)

if test $max_funarg -gt 100; then

AC_MSG_ERROR([maximum number of function arguments is 100, when blocksize is 1,2,4 kb.])

fi

;;

8)

if test $max_funarg -gt 600; then

AC_MSG_ERROR([maximum number of function arguments is 600, when blocksize is 8 kb.])

fi

;;

16)

if test $max_funarg -gt 1200; then

AC_MSG_ERROR([maximum number of function arguments is 1200, when blocksize is 16 kb.])

fi

;;

32)

if test $max_funarg -gt 2400; then

AC_MSG_ERROR([maximum number of function arguments is 2400, when blocksize is 32 kb.])

fi

;;

*) AC_MSG_ERROR([Invalid block size. Allowed values are 1,2,4,8,16,32.])

esac

AC_MSG_RESULT([${max_funarg}])

AC_DEFINE_UNQUOTED(MAXIMUM_FUNARG, $max_funarg, [Set maximum number of function arguments.])

#

# C compiler

#

# If you don't specify a list of compilers to test, the AC_PROG_CC and

# AC_PROG_CXX macros test for a long list of unsupported compilers.

pgac_cc_list="gcc cc"

pgac_cxx_list="g++ c++"

AC_PROG_CC([$pgac_cc_list])

AC_PROG_CC_C99()

# Error out if the compiler does not support C99, as the codebase

# relies on that.

if test "$ac_cv_prog_cc_c99" = no; then

AC_MSG_ERROR([C compiler "$CC" does not support C99])

fi

AC_PROG_CXX([$pgac_cxx_list])

# Check if it's Intel's compiler, which (usually) pretends to be gcc,

# but has idiosyncrasies of its own. We assume icc will define

# __INTEL_COMPILER regardless of CFLAGS.

AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [@%:@ifndef __INTEL_COMPILER

choke me

@%:@endif])], [ICC=yes], [ICC=no])

# Check if it's Sun Studio compiler. We assume that

# __SUNPRO_C will be defined for Sun Studio compilers

AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [@%:@ifndef __SUNPRO_C

choke me

@%:@endif])], [SUN_STUDIO_CC=yes], [SUN_STUDIO_CC=no])

AC_SUBST(SUN_STUDIO_CC)

#

# LLVM

#

# Checked early because subsequent tests depend on it.

PGAC_ARG_BOOL(with, llvm, no, [build with LLVM based JIT support],

[AC_DEFINE([USE_LLVM], 1, [Define to 1 to build with LLVM based JIT support. (--with-llvm)])])

AC_SUBST(with_llvm)

dnl must use AS_IF here, else AC_REQUIRES inside PGAC_LLVM_SUPPORT malfunctions

AS_IF([test "$with_llvm" = yes], [

PGAC_LLVM_SUPPORT()

]) # fi

unset CFLAGS

unset CXXFLAGS

#

# Read the template

#

. "$srcdir/src/template/$template" || exit

# C[XX]FLAGS are selected so:

# If the user specifies something in the environment, that is used.

# else: If the template file set something, that is used.

# else: If coverage was enabled, don't set anything.

# else: If the compiler is GCC, then we use -O2.

# else: If the compiler is something else, then we use -O, unless debugging.

if test "$ac_env_CFLAGS_set" = set; then

CFLAGS=$ac_env_CFLAGS_value

elif test "${CFLAGS+set}" = set; then

: # (keep what template set)

elif test "$enable_coverage" = yes; then

: # no optimization by default

elif test "$GCC" = yes; then

CFLAGS="-O2"

else

# if the user selected debug mode, don't use -O

if test "$enable_debug" != yes; then

CFLAGS="-O"

fi

fi

if test "$ac_env_CXXFLAGS_set" = set; then

CXXFLAGS=$ac_env_CXXFLAGS_value

elif test "${CXXFLAGS+set}" = set; then

: # (keep what template set)

elif test "$enable_coverage" = yes; then

: # no optimization by default

elif test "$GCC" = yes; then

CXXFLAGS="-O2"

else

# if the user selected debug mode, don't use -O

if test "$enable_debug" != yes; then

CXXFLAGS="-O"

fi

fi

# When generating bitcode (for inlining) we always want to use -O2

# even when --enable-debug is specified. The bitcode is not going to

# be used for line-by-line debugging, and JIT inlining doesn't work

# without at least -O1 (otherwise clang will emit 'noinline'

# attributes everywhere), which is bad for testing. Still allow the

# environment to override if done explicitly.

if test "$ac_env_BITCODE_CFLAGS_set" = set; then

BITCODE_CFLAGS=$ac_env_BITCODE_CFLAGS_value

else

BITCODE_CFLAGS="-O2 $BITCODE_CFLAGS"

fi

if test "$ac_env_BITCODE_CXXFLAGS_set" = set; then

BITCODE_CXXFLAGS=$ac_env_BITCODE_CXXFLAGS_value

else

BITCODE_CXXFLAGS="-O2 $BITCODE_CXXFLAGS"

fi

# C[XX]FLAGS we determined above will be added back at the end

user_CFLAGS=$CFLAGS

CFLAGS=""

user_CXXFLAGS=$CXXFLAGS

CXXFLAGS=""

user_BITCODE_CFLAGS=$BITCODE_CFLAGS

BITCODE_CFLAGS=""

user_BITCODE_CXXFLAGS=$BITCODE_CXXFLAGS

BITCODE_CXXFLAGS=""

# set CFLAGS_UNROLL_LOOPS and CFLAGS_VECTORIZE from the environment, if present

if test "$ac_env_CFLAGS_UNROLL_LOOPS_set" = set; then

CFLAGS_UNROLL_LOOPS=$ac_env_CFLAGS_UNROLL_LOOPS_value

fi

if test "$ac_env_CFLAGS_VECTORIZE_set" = set; then

CFLAGS_VECTORIZE=$ac_env_CFLAGS_VECTORIZE_value

fi

# Some versions of GCC support some additional useful warning flags.

# Check whether they are supported, and add them to CFLAGS if so.

# ICC pretends to be GCC but it's lying; it doesn't support these flags,

# but has its own. Also check other compiler-specific flags here.

if test "$GCC" = yes -a "$ICC" = no; then

CFLAGS="-Wall -Wmissing-prototypes -Wpointer-arith"

CXXFLAGS="-Wall -Wpointer-arith"

# These work in some but not all gcc versions

save_CFLAGS=$CFLAGS

PGAC_PROG_CC_CFLAGS_OPT([-Wdeclaration-after-statement])

# -Wdeclaration-after-statement isn't applicable for C++. Specific C files

# disable it, so AC_SUBST the negative form.

PERMIT_DECLARATION_AFTER_STATEMENT=

if test x"$save_CFLAGS" != x"$CFLAGS"; then

PERMIT_DECLARATION_AFTER_STATEMENT=-Wno-declaration-after-statement

fi

AC_SUBST(PERMIT_DECLARATION_AFTER_STATEMENT)

# Really don't want VLAs to be used in our dialect of C

PGAC_PROG_CC_CFLAGS_OPT([-Werror=vla])

# On macOS, complain about usage of symbols newer than the deployment target

PGAC_PROG_CC_CFLAGS_OPT([-Werror=unguarded-availability-new])

PGAC_PROG_CXX_CFLAGS_OPT([-Werror=unguarded-availability-new])

# -Wvla is not applicable for C++

PGAC_PROG_CC_CFLAGS_OPT([-Wendif-labels])

PGAC_PROG_CXX_CFLAGS_OPT([-Wendif-labels])

PGAC_PROG_CC_CFLAGS_OPT([-Wmissing-format-attribute])

PGAC_PROG_CXX_CFLAGS_OPT([-Wmissing-format-attribute])

PGAC_PROG_CC_CFLAGS_OPT([-Wimplicit-fallthrough=3])

PGAC_PROG_CXX_CFLAGS_OPT([-Wimplicit-fallthrough=3])

PGAC_PROG_CC_CFLAGS_OPT([-Wcast-function-type])

PGAC_PROG_CXX_CFLAGS_OPT([-Wcast-function-type])

PGAC_PROG_CC_CFLAGS_OPT([-Wshadow=compatible-local])

PGAC_PROG_CXX_CFLAGS_OPT([-Wshadow=compatible-local])

# This was included in -Wall/-Wformat in older GCC versions

PGAC_PROG_CC_CFLAGS_OPT([-Wformat-security])

PGAC_PROG_CXX_CFLAGS_OPT([-Wformat-security])

# Disable strict-aliasing rules; needed for gcc 3.3+

PGAC_PROG_CC_CFLAGS_OPT([-fno-strict-aliasing])

PGAC_PROG_CXX_CFLAGS_OPT([-fno-strict-aliasing])

# Disable optimizations that assume no overflow; needed for gcc 4.3+

PGAC_PROG_CC_CFLAGS_OPT([-fwrapv])

PGAC_PROG_CXX_CFLAGS_OPT([-fwrapv])

# Disable FP optimizations that cause various errors on gcc 4.5+ or maybe 4.6+

PGAC_PROG_CC_CFLAGS_OPT([-fexcess-precision=standard])

PGAC_PROG_CXX_CFLAGS_OPT([-fexcess-precision=standard])

# Optimization flags for specific files that benefit from loop unrolling

PGAC_PROG_CC_VAR_OPT(CFLAGS_UNROLL_LOOPS, [-funroll-loops])

# Optimization flags for specific files that benefit from vectorization

PGAC_PROG_CC_VAR_OPT(CFLAGS_VECTORIZE, [-ftree-vectorize])

#

# The following tests want to suppress various unhelpful warnings by adding

# -Wno-foo switches. But gcc won't complain about unrecognized -Wno-foo

# switches, so we have to test for the positive form and if that works,

# add the negative form. Note that tests of this form typically need to

# be duplicated in the BITCODE_CFLAGS setup stanza below.

#

# Suppress clang's unhelpful unused-command-line-argument warnings.

NOT_THE_CFLAGS=""

PGAC_PROG_CC_VAR_OPT(NOT_THE_CFLAGS, [-Wunused-command-line-argument])

if test -n "$NOT_THE_CFLAGS"; then

CFLAGS="$CFLAGS -Wno-unused-command-line-argument"

fi

# Remove clang 12+'s compound-token-split-by-macro, as this causes a lot

# of warnings when building plperl because of usages in the Perl headers.

NOT_THE_CFLAGS=""

PGAC_PROG_CC_VAR_OPT(NOT_THE_CFLAGS, [-Wcompound-token-split-by-macro])

if test -n "$NOT_THE_CFLAGS"; then

CFLAGS="$CFLAGS -Wno-compound-token-split-by-macro"

fi

# Similarly disable useless truncation warnings from gcc 8+

NOT_THE_CFLAGS=""

PGAC_PROG_CC_VAR_OPT(NOT_THE_CFLAGS, [-Wformat-truncation])

if test -n "$NOT_THE_CFLAGS"; then

CFLAGS="$CFLAGS -Wno-format-truncation"

fi

NOT_THE_CFLAGS=""

PGAC_PROG_CC_VAR_OPT(NOT_THE_CFLAGS, [-Wstringop-truncation])

if test -n "$NOT_THE_CFLAGS"; then

CFLAGS="$CFLAGS -Wno-stringop-truncation"

fi

# Suppress clang 16's strict warnings about function casts

NOT_THE_CFLAGS=""

PGAC_PROG_CC_VAR_OPT(NOT_THE_CFLAGS, [-Wcast-function-type-strict])

if test -n "$NOT_THE_CFLAGS"; then

CFLAGS="$CFLAGS -Wno-cast-function-type-strict"

fi

elif test "$ICC" = yes; then

# Intel's compiler has a bug/misoptimization in checking for

# division by NAN (NaN == 0), -mp1 fixes it, so add it to the CFLAGS.

PGAC_PROG_CC_CFLAGS_OPT([-mp1])

PGAC_PROG_CXX_CFLAGS_OPT([-mp1])

# Make sure strict aliasing is off (though this is said to be the default)

PGAC_PROG_CC_CFLAGS_OPT([-fno-strict-aliasing])

PGAC_PROG_CXX_CFLAGS_OPT([-fno-strict-aliasing])

fi

# If the compiler knows how to hide symbols, add the switch needed for that to

# CFLAGS_SL_MODULE and define HAVE_VISIBILITY_ATTRIBUTE.

#

# This is done separately from the above because -fvisibility is supported by

# quite a few different compilers, making the required repetition bothersome.

#

# We might need to add a separate test to check if

# __attribute__((visibility("hidden"))) is supported, if we encounter a

# compiler that supports one of the supported variants of -fvisibility=hidden

# but uses a different syntax to mark a symbol as exported.

if test "$GCC" = yes -o "$SUN_STUDIO_CC" = yes ; then

PGAC_PROG_CC_VAR_OPT(CFLAGS_SL_MODULE, [-fvisibility=hidden])

# For C++ we additionally want -fvisibility-inlines-hidden

PGAC_PROG_VARCXX_VARFLAGS_OPT(CXX, CXXFLAGS_SL_MODULE, [-fvisibility=hidden])

PGAC_PROG_VARCXX_VARFLAGS_OPT(CXX, CXXFLAGS_SL_MODULE, [-fvisibility-inlines-hidden])

have_visibility_attribute=$pgac_cv_prog_CC_cflags__fvisibility_hidden

fi

if test "$have_visibility_attribute" = "yes"; then

AC_DEFINE([HAVE_VISIBILITY_ATTRIBUTE], 1,

[Define to 1 if your compiler knows the visibility("hidden") attribute.])

fi

AC_SUBST(CFLAGS_UNROLL_LOOPS)

AC_SUBST(CFLAGS_VECTORIZE)

AC_SUBST(CFLAGS_SL_MODULE)

AC_SUBST(CXXFLAGS_SL_MODULE)

# Determine flags used to emit bitcode for JIT inlining.

# 1. We must duplicate any behaviour-changing compiler flags used above,

# to keep compatibility with the compiler used for normal Postgres code.

# 2. We don't bother to duplicate extra-warnings switches --- seeing a

# warning in the main build is enough.

# 3. But we must duplicate -Wno-warning flags, else we'll see those anyway.

if test "$with_llvm" = yes ; then

CLANGXX="$CLANG -xc++"

PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, BITCODE_CFLAGS, [-fno-strict-aliasing])

PGAC_PROG_VARCXX_VARFLAGS_OPT(CLANGXX, BITCODE_CXXFLAGS, [-fno-strict-aliasing])

PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, BITCODE_CFLAGS, [-fwrapv])

PGAC_PROG_VARCXX_VARFLAGS_OPT(CLANGXX, BITCODE_CXXFLAGS, [-fwrapv])

PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, BITCODE_CFLAGS, [-fexcess-precision=standard])

PGAC_PROG_VARCXX_VARFLAGS_OPT(CLANGXX, BITCODE_CXXFLAGS, [-fexcess-precision=standard])

PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, BITCODE_CFLAGS, [-Xclang -no-opaque-pointers])

PGAC_PROG_VARCXX_VARFLAGS_OPT(CLANGXX, BITCODE_CXXFLAGS, [-Xclang -no-opaque-pointers])

NOT_THE_CFLAGS=""

PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, NOT_THE_CFLAGS, [-Wunused-command-line-argument])

if test -n "$NOT_THE_CFLAGS"; then

BITCODE_CFLAGS="$BITCODE_CFLAGS -Wno-unused-command-line-argument"

fi

NOT_THE_CFLAGS=""

PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, NOT_THE_CFLAGS, [-Wcompound-token-split-by-macro])

if test -n "$NOT_THE_CFLAGS"; then

BITCODE_CFLAGS="$BITCODE_CFLAGS -Wno-compound-token-split-by-macro"

fi

NOT_THE_CFLAGS=""

PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, NOT_THE_CFLAGS, [-Wformat-truncation])

if test -n "$NOT_THE_CFLAGS"; then

BITCODE_CFLAGS="$BITCODE_CFLAGS -Wno-format-truncation"

fi

NOT_THE_CFLAGS=""

PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, NOT_THE_CFLAGS, [-Wstringop-truncation])

if test -n "$NOT_THE_CFLAGS"; then

BITCODE_CFLAGS="$BITCODE_CFLAGS -Wno-stringop-truncation"

fi

fi

# supply -g if --enable-debug

if test "$enable_debug" = yes && test "$ac_cv_prog_cc_g" = yes; then

CFLAGS="$CFLAGS -g"

fi

if test "$enable_debug" = yes && test "$ac_cv_prog_cxx_g" = yes; then

CXXFLAGS="$CXXFLAGS -g"

fi

# enable code coverage if --enable-coverage

if test "$enable_coverage" = yes; then

if test "$GCC" = yes; then

CFLAGS="$CFLAGS -fprofile-arcs -ftest-coverage"

CXXFLAGS="$CXXFLAGS -fprofile-arcs -ftest-coverage"

else

AC_MSG_ERROR([--enable-coverage is supported only when using GCC])

fi

fi

# enable profiling if --enable-profiling

if test "$enable_profiling" = yes && test "$ac_cv_prog_cc_g" = yes; then

if test "$GCC" = yes; then

AC_DEFINE([PROFILE_PID_DIR], 1,

[Define to 1 to allow profiling output to be saved separately for each process.])

CFLAGS="$CFLAGS -pg $PLATFORM_PROFILE_FLAGS"

CXXFLAGS="$CXXFLAGS -pg $PLATFORM_PROFILE_FLAGS"

else

AC_MSG_ERROR([--enable-profiling is supported only when using GCC])

fi

fi

# On Solaris, we need this #define to get POSIX-conforming versions

# of many interfaces (sigwait, getpwuid_r, ...).

if test "$PORTNAME" = "solaris"; then

CPPFLAGS="$CPPFLAGS -D_POSIX_PTHREAD_SEMANTICS"

fi

# We already have this in Makefile.win32, but configure needs it too

if test "$PORTNAME" = "win32"; then

CPPFLAGS="$CPPFLAGS -I$srcdir/src/include/port/win32"

fi

# Now that we're done automatically adding stuff to C[XX]FLAGS, put back the

# user-specified flags (if any) at the end. This lets users override

# the automatic additions.

CFLAGS="$CFLAGS $user_CFLAGS"

CXXFLAGS="$CXXFLAGS $user_CXXFLAGS"

BITCODE_CFLAGS="$BITCODE_CFLAGS $user_BITCODE_CFLAGS"

BITCODE_CXXFLAGS="$BITCODE_CXXFLAGS $user_BITCODE_CXXFLAGS"

AC_SUBST(BITCODE_CFLAGS)

AC_SUBST(BITCODE_CXXFLAGS)

# The template file must set up CFLAGS_SL; we don't support user override

AC_SUBST(CFLAGS_SL)

# Check if the compiler still works with the final flag settings

# (note, we're not checking that for CXX, which is optional)

AC_MSG_CHECKING([whether the C compiler still works])

AC_LINK_IFELSE([AC_LANG_PROGRAM([], [return 0;])],

[AC_MSG_RESULT(yes)],

[AC_MSG_RESULT(no)

AC_MSG_ERROR([cannot proceed])])

# Defend against gcc -ffast-math

if test "$GCC" = yes; then

AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [@%:@ifdef __FAST_MATH__

choke me

@%:@endif])], [], [AC_MSG_ERROR([do not put -ffast-math in CFLAGS])])

fi

# Defend against clang being used on x86-32 without SSE2 enabled. As current

# versions of clang do not understand -fexcess-precision=standard, the use of

# x87 floating point operations leads to problems like isinf possibly returning

# false for a value that is infinite when converted from the 80bit register to

# the 8byte memory representation.

#

# Only perform the test if the compiler doesn't understand

# -fexcess-precision=standard, that way a potentially fixed compiler will work

# automatically.

if test "$pgac_cv_prog_CC_cflags__fexcess_precision_standard" = no; then

AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [

@%:@if defined(__clang__) && defined(__i386__) && !defined(__SSE2_MATH__)

choke me

@%:@endif

])], [],

[AC_MSG_ERROR([Compiling PostgreSQL with clang, on 32bit x86, requires SSE2 support. Use -msse2 or use gcc.])])

fi

AC_PROG_CPP

AC_SUBST(GCC)

#

# Set up TAS assembly code if needed; the template file has now had its

# chance to request this.

#

AC_CONFIG_LINKS([src/backend/port/tas.s:src/backend/port/tas/${tas_file}])

if test "$need_tas" = yes ; then

TAS=tas.o

else

TAS=""

fi

AC_SUBST(TAS)

AC_SUBST(DLSUFFIX)dnl

AC_DEFINE_UNQUOTED([DLSUFFIX], ["$DLSUFFIX"],

[Define to the file name extension of dynamically-loadable modules.])

#

# Set up pkg_config in case we need it below

#

PKG_PROG_PKG_CONFIG

#

# Automatic dependency tracking

#

PGAC_ARG_BOOL(enable, depend, no, [turn on automatic dependency tracking],

[autodepend=yes])

AC_SUBST(autodepend)

#

# Enable assert checks

#

PGAC_ARG_BOOL(enable, cassert, no, [enable assertion checks (for debugging)],

[AC_DEFINE([USE_ASSERT_CHECKING], 1,

[Define to 1 to build with assertion checks. (--enable-cassert)])])

#

# Include directories

#

ac_save_IFS=$IFS

IFS="${IFS}${PATH_SEPARATOR}"

# SRCH_INC comes from the template file

for dir in $with_includes $SRCH_INC; do

if test -d "$dir"; then

INCLUDES="$INCLUDES -I$dir"

else

AC_MSG_WARN([*** Include directory $dir does not exist.])

fi

done

IFS=$ac_save_IFS

AC_SUBST(INCLUDES)

#

# Library directories

#

ac_save_IFS=$IFS

IFS="${IFS}${PATH_SEPARATOR}"

# LIBRARY_DIRS comes from command line, SRCH_LIB from template file.

for dir in $LIBRARY_DIRS $SRCH_LIB; do

if test -d "$dir"; then

LIBDIRS="$LIBDIRS -L$dir"

else

AC_MSG_WARN([*** Library directory $dir does not exist.])

fi

done

IFS=$ac_save_IFS

#

# ICU

#

AC_MSG_CHECKING([whether to build with ICU support])

PGAC_ARG_BOOL(with, icu, yes, [build without ICU support],

[AC_DEFINE([USE_ICU], 1, [Define to build with ICU support. (--with-icu)])])

AC_MSG_RESULT([$with_icu])

AC_SUBST(with_icu)

if test "$with_icu" = yes; then

PKG_CHECK_MODULES(ICU, icu-uc icu-i18n, [],

[AC_MSG_ERROR([ICU library not found

If you have ICU already installed, see config.log for details on the

failure. It is possible the compiler isn't looking in the proper directory.

Use --without-icu to disable ICU support.])])

fi

#

# Optionally build Tcl modules (PL/Tcl)

#

AC_MSG_CHECKING([whether to build with Tcl])

PGAC_ARG_BOOL(with, tcl, no, [build Tcl modules (PL/Tcl)])

AC_MSG_RESULT([$with_tcl])

AC_SUBST([with_tcl])

# We see if the path to the Tcl/Tk configuration scripts is specified.

# This will override the use of tclsh to find the paths to search.

PGAC_ARG_REQ(with, tclconfig, [DIR], [tclConfig.sh is in DIR])

#

# Optionally build Perl modules (PL/Perl)

#

AC_MSG_CHECKING([whether to build Perl modules])

PGAC_ARG_BOOL(with, perl, no, [build Perl modules (PL/Perl)])

AC_MSG_RESULT([$with_perl])

AC_SUBST(with_perl)

#

# Optionally build Python modules (PL/Python)

#

AC_MSG_CHECKING([whether to build Python modules])

PGAC_ARG_BOOL(with, python, no, [build Python modules (PL/Python)])

AC_MSG_RESULT([$with_python])

AC_SUBST(with_python)

#

# GSSAPI

#

AC_MSG_CHECKING([whether to build with GSSAPI support])

PGAC_ARG_BOOL(with, gssapi, no, [build with GSSAPI support],

[

AC_DEFINE(ENABLE_GSS, 1, [Define to build with GSSAPI support. (--with-gssapi)])

krb_srvtab="FILE:\$(sysconfdir)/krb5.keytab"

])

AC_MSG_RESULT([$with_gssapi])

AC_SUBST(with_gssapi)

AC_SUBST(krb_srvtab)

#

# Kerberos configuration parameters

#

PGAC_ARG_REQ(with, krb-srvnam,

[NAME], [default service principal name in Kerberos (GSSAPI) [postgres]],

[],

[with_krb_srvnam="postgres"])

AC_SUBST(with_krb_srvnam)

AC_DEFINE_UNQUOTED([PG_KRB_SRVNAM], ["$with_krb_srvnam"],

[Define to the name of the default PostgreSQL service principal in Kerberos (GSSAPI). (--with-krb-srvnam=NAME)])

#

# PAM

#

AC_MSG_CHECKING([whether to build with PAM support])

PGAC_ARG_BOOL(with, pam, no,

[build with PAM support],

[AC_DEFINE([USE_PAM], 1, [Define to 1 to build with PAM support. (--with-pam)])])

AC_MSG_RESULT([$with_pam])

#

# BSD AUTH

#

AC_MSG_CHECKING([whether to build with BSD Authentication support])

PGAC_ARG_BOOL(with, bsd-auth, no,