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00e863c48e
sqlite/auto.def
stephan 00e863c48e Document the purpose of a global auto.def var added in [0d558318172d]. 
FossilOrigin-Name: f5b6604716826b2057e969a8c0d099325b22eac42f1da65ec367671fc6625639
2024-11-07 08:29:58 +00:00

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#/do/not/tclsh
# ^^^ help out editors which guess this file's content type.
#
# This is the main autosetup-compatible configure script for the
# SQLite project.
#
# This script should be kept compatible with JimTCL, a copy of which
# is included in this source tree as ./autosetup/jimsh0.c. The number
# of incompatibilities between canonical TCL and JimTCL is very low
# and alternative formulations of incompatible constructs have, so
# far, been easy to find.
#
# JimTCL: https://jim.tcl.tk
#
use cc cc-db cc-shared cc-lib proj pkg-config
# $DUMP_DEFINES_TXT is the file emitted by --dump-defines, intended
# only for build debugging and not part of the public build interface.
set DUMP_DEFINES_TXT ./config.defines.txt
# $DUMP_DEFINES_JSON is the autosetup counterpart of the historical
# "DEFS" var which was generated by the autotools in the pre-processed
# autotools builds (but not in the canonical tree). Generation of this
# file is disabled (via an empty file name) until/unless someone
# voices a specific interest in it. The original motivating use case
# is handled fine by sqlite_cfg.h.
set DUMP_DEFINES_JSON ""; #./config.defines.json
########################################################################
# Regarding flag compatibility with the historical autotool configure
# script:
#
# A very long story made short, autosetup's --flag handling has
# some behaviors which make it impossible to implement 100% identical
# flags compared to the historical autotools build. The differences
# are documented here:
#
# 1) --debug is used by autosetup itself, so we have to rename it to
# --with-debug. We cannot use --enable-debug because that is, for
# autosetup, and alias for --debug=1.
#
# 2) In autosetup, all flags starting with (--enable, --disable) are
# forced to be booleans and receive special handling in how they're
# resolved. Because of that we have to rename:
#
# 2.1) --enable-tempstore[=no] to --with-tempstore[=no].
#
########################################################################
# A gentle introduction to flags handling in autosetup
#
# Reference: https://msteveb.github.io/autosetup/developer/
#
# All configure flags must be described in an 'options' call, which
# must appear very early on in this script. The general syntax is:
#
# FLAG => {Help text}
#
# Where FLAG can have any of the following formats:
#
# boolopt => "a boolean option which defaults to disabled"
# boolopt2=1 => "a boolean option which defaults to enabled"
# stringopt: => "an option which takes an argument, e.g. --stringopt=value"
# stringopt2:=value => "an option where the argument is optional and defaults to 'value'"
# optalias booltopt3 => "a boolean with a hidden alias. --optalias is not shown in --help"
#
# Autosetup does no small amount of specialized handling for flags,
# especially booleans. Each bool-type --FLAG implicitly gets
# --enable-FLAG and --disable-FLAG forms, and explicitly adding flags
# with those prefixes will force them to be boolean flags. e.g. we
# define a flag "readline", which will be interpreted in one of two
# ways, depending on how it's invoked and how its default is defined:
#
# --enable-readline ==> boolean true
# --disable-readline ==> boolean false
#
# Trying to pass --readline or --readline=1 or --readline=0 will
# result in an "unrecognized option" error, despite the the options
# call listing the flag as "readline".
#
# The behavior described above can lead lead to some confusion when
# writing help text. For example:
#
# options { json=1 {Disable JSON functions} }
#
# The reason the help text says "disable" is because a boolean option
# defaulting to true is, in the --help text, rendered as:
#
# --disable-json Disable JSON functions
#
# Whereas a bool flag which defaults to false will instead render as:
#
# --enable-FLAG
#
# Non-boolean flags, in contrast, use the names specifically given to
# them in the 'options' invocation. e.g. "with-tcl" is the --with-tcl
# flag. Autosetup may, however, choose to automatically alter the help
# text, as demonstrated here:
#
# options {
# readline=1 => {Disable readline support}
# with-readline-lib: => {Readline library}
# with-readline-inc: => {Readline include paths}
# }
#
# $ ./configure --help | grep readline
# --disable-readline disable readline support
# --with-readline-lib specify readline library
# --with-readline-inc specify readline include paths
#
# Note that it prefixed and lower-case the help message. Whether
# that's a feature or a bug can be debated.
#
# Fetching values for flags:
#
# booleans: use one of:
# - [opt-bool FLAG] is autosetup's built-in command for this, but we
# have some convenience variants:
# - [proj-opt-truthy FLAG]
# - [proj-opt-if-truthy FLAG {THEN} {ELSE}]
#
# Non-boolean (i.e. string) flags:
# - [opt-val FLAG ?default?]
#
########################################################################
set flags {
# <build-modes>
with-debug:=1 => {Enable debug build flags}
shared=1 => {Disable build of shared libary}
static=1 => {Disable build of static library (mostly)}
amalgamation=1 => {Disable the amalgamation and instead build all files separately.}
# </build-modes>
# <lib-feature>
threadsafe=1 => {Disable mutexing}
with-tempstore:=no => {Use an in-ram database for temporary tables: never,no,yes,always}
largefile=1 => {Disable large file support}
load-extension=1 => {Disable loading of external extensions}
math=1 => {Disable math functions}
json=1 => {Disable JSON functions}
memsys5 => {Enable MEMSYS5}
memsys3 => {Enable MEMSYS3}
fts3 => {Enable the FTS3 extension}
fts4 => {Enable the FTS4 extension}
fts5 => {Enable the FTS5 extension}
update-limit => {Enable the UPDATE/DELETE LIMIT clause}
geopoly => {Enable the GEOPOLY extension}
rtree => {Enable the RTREE extension}
session => {Enable the SESSION extension}
all => {Enable FTS4, FTS5, Geopoly, RTree, Sessions}
# </lib-feature>
# <tcl>
# --with-tcl=DIR may be either a dir containing tclConfig.sh or a
# dir one level up from that from which we can derive a dir
# containing tclConfig.sh.
with-tcl:DIR => {Root of path containing tclConfig.sh}
# If --with-tclsh=X given, it is used for (A) trying to find
# tclConfig.sh and (B) all TCL-based code generation. Warning: if
# its containing dir has multiple tclsh versions, it may select the
# wrong tclConfig.sh!
with-tclsh:PATH => {Full pathname of tclsh to use}
# --disable-tcl only disables building of the SQLite TCL extension,
# not the requirement for TCL. This tree requires TCL for code
# generation but can use the in-tree copy of autosetup/jimsh0.c for
# that. The SQLite TCL extension and, by extension, the test code
# require a canonical tclsh.
tcl=1 => {Disable components which require TCL-dev}
# <tcl>
# <line-editing>
readline=1 => {Disable readline support}
# --with-readline-lib is a backwards-compatible alias for
# --with-readline-ldflags
with-readline-lib:
with-readline-ldflags:=auto
=> {Readline LDFLAGS, e.g. -lreadline -lncurses}
# --with-readline-inc is a backwards-compatible alias for
# --with-readline-cflags.
with-readline-inc:
with-readline-cflags:=auto
=> {Readline CFLAGS, e.g. -I/path/to/includes}
with-readline-header:PATH
=> {Full path to readline.h, from which --with-readline-cflags will be derived}
with-linenoise:DIR => {Source directory for linenoise.c and linenoise.h}
editline=0 => {Enable BSD editline support}
# </line-editing>
# <icu>
with-icu-ldflags:LDFLAGS
=> {Enable SQLITE_ENABLE_ICU and add the given linker flags for the ICU libraries}
with-icu-config:=auto => {Enable SQLITE_ENABLE_ICU and fetch linker flags from the given icu-config binary}
icu-collations=0 => {Enable SQLITE_ENABLE_ICU_COLLATIONS. Requires --with-icu-ldflags=... or --with-icu-config}
# </icu>
# <alternative-builds>
with-wasi-sdk:=/opt/wasi-sdk
=> {Top-most dir of the wasi-sdk for a WASI build}
with-emsdk:=auto => {Top-most dir of the Emscripten SDK installation. Default = EMSDK env var.}
# </alternative-builds>
# <developer>
test-status => {Enable status of tests}
gcov=0 => {Enable coverage testing using gcov}
linemacros => {Enable #line macros in the amalgamation}
dump-defines=0 => {Dump autosetup defines to $DUMP_DEFINES_TXT (for build debugging)}
# </developer>
}
if {"" ne $DUMP_DEFINES_JSON} {
lappend flags \
defines-json-include-lowercase=0 \
=> {Include lower-case defines (primarily system paths) in $DUMP_DEFINES_JSON}
}
options [subst -nobackslashes -nocommands $flags]
unset flags
#
# Carry values from hidden --flag aliases over to their canonical flag
# forms.
#
proj-xfer-options-aliases {
with-readline-inc => with-readline-cflags
with-readline-lib => with-readline-ldflags
}
set srcdir $::autosetup(srcdir)
set PACKAGE_VERSION [proj-file-content -trim $srcdir/VERSION]
define PACKAGE_NAME "sqlite"
define PACKAGE_URL {https://sqlite.org}
define PACKAGE_VERSION $PACKAGE_VERSION
define PACKAGE_STRING "[get-define PACKAGE_NAME] $PACKAGE_VERSION"
define PACKAGE_BUGREPORT [get-define PACKAGE_URL]/forum
msg-result "Source dir = $srcdir"
msg-result "Build dir = $::autosetup(builddir)"
msg-result "Configuring SQLite version $PACKAGE_VERSION"
if {1} {
#
# SQLITE_AUTORECONFIG contains make target rules for re-running the
# configure script with the same arguments it was initially invoked
# with. This can be used to automatically reconfigure
#
proc squote {arg} {
# Wrap $arg in single-quotes if it looks like it might need that
# to avoid mis-handling as a shell argument. We assume that $arg
# will never contain any single-quote characters.
if {[string match {*[ &;$*"]*} $arg]} { return '$arg' }
return $arg
}
define-append SQLITE_AUTORECONFIG cd [squote $::autosetup(builddir)] && [squote $srcdir/configure]
#{*}$::autosetup(argv) breaks with --flag='val with spaces', so...
foreach arg $::autosetup(argv) {
define-append SQLITE_AUTORECONFIG [squote $arg]
}
rename squote ""
}
# Are we cross-compiling?
set isCrossCompiling [proj-is-cross-compiling]
define OPT_FEATURE_FLAGS {} ; # -DSQLITE_OMIT/ENABLE flags.
define OPT_SHELL {} ; # CFLAGS for the sqlite3 CLI app
########################################################################
# Adds $args, if not empty, to OPT_FEATURE_FLAGS.
# If the first arg is -shell then it strips that arg
# and passes the remaining args th sqlite-add-shell-opt
# in addition to adding them to OPT_FEATURE_FLAGS.
proc sqlite-add-feature-flag {args} {
set shell ""
if {"-shell" eq [lindex $args 0]} {
set args [lassign $args shell]
}
if {"" ne $args} {
if {"" ne $shell} {
sqlite-add-shell-opt {*}$args
}
define-append OPT_FEATURE_FLAGS {*}$args
}
}
# Appends $args, if not empty, to OPT_SHELL.
proc sqlite-add-shell-opt {args} {
if {"" ne $args} {
define-append OPT_SHELL {*}$args
}
}
# Pass msg-debug=1 to configure to enable obnoxiously loud output from
# msg-debug.
set msgDebugEnabled [proj-val-truthy [get-env msg-debug 0]]
proc msg-debug {msg} {
if {$::msgDebugEnabled} {
puts stderr [proj-bold "** DEBUG: $msg"]
}
}
proj-file-extensions
if {".exe" eq [get-define TARGET_EXEEXT]} {
define SQLITE_OS_UNIX 0
define SQLITE_OS_WIN 1
# todo? add -DSQLITE_OS_WIN=1 to CFLAGS or CFLAGS_sqlite3_os?
} else {
define SQLITE_OS_UNIX 1
define SQLITE_OS_WIN 0
# todo? add -DSQLITE_OS_UNIX=1 to CFLAGS or CFLAGS_sqlite3_os
}
#########
# Programs needed
cc-check-tools ld ar ; # must come before sqlite-check-wasi-sdk
if {"" eq [proj-bin-define install]} {
proj-warn "Cannot find install binary, so 'make install' will not work."
}
########################################################################
# We differentiate between two C compilers: the one used for binaries
# which are to run on the build system (in autosetup it's called
# CC_FOR_BUILD and in Makefile.in it's $(B.cc)) and the one used for
# compiling binaries for the target system (CC a.k.a. $(T.cc)).
# Normally they're the same, but they will differ when
# cross-compiling.
define CFLAGS [proj-get-env CFLAGS {-g -O2}]
define BUILD_CFLAGS [proj-get-env BUILD_CFLAGS {-g}]
########################################################################
# Handle --with-wasi-sdk=DIR
#
# This MUST be run early on because it may change the toolchain and
# disable a number of config options.
proc sqlite-check-wasi-sdk {} {
set wasiSdkDir [opt-val with-wasi-sdk] ; # ??? [lindex [opt-val with-wasi-sdk] end]
define HAVE_WASI_SDK 0
if {$wasiSdkDir eq ""} {
return 0
} elseif {$::isCrossCompiling} {
proj-fatal "Cannot combine --with-wasi-sdk with cross-compilation"
}
msg-result "Checking WASI SDK directory \[$wasiSdkDir]... "
#puts "prefix = [prefix $wasiSdkDir/bin {clang ld}]"
proj-affirm-files-exist -v {*}[prefix "$wasiSdkDir/bin/" {clang wasm-ld}]
define HAVE_WASI_SDK 1
define WASI_SDK_DIR $wasiSdkDir
# Disable numerous options which we know either can't work or are
# not useful in this build...
msg-result "Using wasi-sdk clang. Disabling CLI shell and forcing:"
foreach opt {
editline
gcov
load-extension
readline
shared
tcl
threadsafe
} {
msg-result " --disable-$opt"
proj-opt-set $opt 0
}
# Remember that we now have a discrepancy beteween
# $::isCrossCompiling and [proj-is-cross-compiling].
set ::isCrossCompiling 1
#
# Changing --host and --target have no effect here except to
# possibly cause confusion. Autosetup has finished processing them
# by this point.
#
# host_alias=wasm32-wasi
# target=wasm32-wasi
#
# Merely changing CC, LD, and AR to the wasi-sdk's is enough to get
# sqlite3.o building in WASM format.
#
define CC "${wasiSdkDir}/bin/clang"
define LD "${wasiSdkDir}/bin/wasm-ld"
define AR "${wasiSdkDir}/bin/ar"
#define STRIP "${wasiSdkDir}/bin/strip"
return 1
}; # sqlite-check-wasi-sdk
sqlite-check-wasi-sdk
#
# Enable large file support (if special flags are necessary)
define HAVE_LFS 0
if {[opt-bool largefile]} {
cc-check-lfs
}
#
# Check for needed/wanted data types
cc-with {-includes stdint.h} \
{cc-check-types int8_t int16_t int32_t int64_t intptr_t \
uint8_t uint16_t uint32_t uint64_t uintptr_t}
#
# Check for needed/wanted functions
cc-check-functions gmtime_r isnan localtime_r localtime_s \
malloc_usable_size strchrnul usleep utime pread pread64 pwrite pwrite64
proj-check-function-in-lib fdatasync rt
define LDFLAGS_FDATASYNC [get-define lib_fdatasync]
undefine lib_fdatasync
#
# Check for needed/wanted headers
cc-check-includes \
sys/types.h sys/stat.h dlfcn.h unistd.h \
stdlib.h malloc.h memory.h \
string.h strings.h \
inttypes.h
if {[cc-check-includes zlib.h] && [proj-check-function-in-lib deflate z]} {
# TODO? port over the more sophisticated zlib search from the fossil auto.def
define HAVE_ZLIB 1
define LDFLAGS_ZLIB -lz
sqlite-add-shell-opt -DSQLITE_HAVE_ZLIB=1
} else {
define HAVE_ZLIB 0
define LDFLAGS_ZLIB ""
}
proj-check-rpath ; # Determine proper rpath-handling flag
if {0 && [proj-check-soname libsqlite3.so.3]} {
# It's not yet clear whether we gain anything from setting -soname
define LDFLAGS_SONAME_LIBSQLITE3 [get-define LDFLAGS_SONAME_PREFIX]libsqlite3.so.3
} else {
define LDFLAGS_SONAME_LIBSQLITE3 ""
}
proj-define-if-opt-truthy shared ENABLE_SHARED "Build shared library?"
if {![proj-define-if-opt-truthy static ENABLE_STATIC \
"Build static library?"]} {
proj-warn "Static lib build may be implicitly re-activated by other components, e.g. some test apps."
}
proj-define-if-opt-truthy amalgamation USE_AMALGAMATION "Use amalgamation for builds?"
proj-define-if-opt-truthy gcov USE_GCOV "Use gcov?"
proj-define-if-opt-truthy test-status TSTRNNR_OPTS \
"test-runner flags:" {--status} {}
proj-define-if-opt-truthy linemacros AMALGAMATION_LINE_MACROS \
"Use #line macros in the amalgamation:"
msg-checking "SQLITE_DEBUG build? "
proj-if-opt-truthy with-debug {
define SQLITE_DEBUG 1
define TARGET_DEBUG {-g -DSQLITE_DEBUG=1 -DSQLITE_ENABLE_SELECTTRACE -DSQLITE_ENABLE_WHERETRACE -O0 -Wall}
msg-result yes
} {
define TARGET_DEBUG {-DNDEBUG}
msg-result no
}
########################################################################
# TCL...
#
# sqlite-check-tcl performs most of the --with-tcl and --with-tclsh
# handling. Some related bits and pieces are performed before and
# after that function is called.
#
# Important [define]'d vars:
#
# - HAVE_TCL indicates whether we have a tclsh suitable for building
# the TCL SQLite extension and, by extension, the testing
# infrastructure. This must only be 1 for environments where
# tclConfig.sh can be found.
#
# - TCLSH_CMD is the path to the canonical tclsh or "". It never
# refers to jimtcl.
#
# - TCL_CONFIG_SH is the path to tclConfig.sh or "".
#
# - TCLLIBDIR is the dir to which libtclsqlite3 gets installed.
#
# - TCLLIB_RPATH = the -rpath flag specific to libtclsqlite3, which
# will usually differ from the rpath used by the rest of the lib.
#
# - BTCLSH = the path to the tcl interpreter used for in-tree code
# generation. It may be jimtcl or the canonical tclsh but may not
# be empty - this tree requires TCL to generated numerous
# components.
#
proc sqlite-check-tcl {} {
define TCLSH_CMD false ; # Significant is that it exits with non-0
define HAVE_TCL 0 ; # Will be enabled via --tcl or a successful search
define TCLLIBDIR "" ; # Installation dir for TCL extension lib
define TCLLIB_RPATH "" ; # rpath for TCL extension lib
define TCL_CONFIG_SH ""; # full path to tclConfig.sh
if {![opt-bool tcl]} {
msg-result "TCL disabled via --disable-tcl. Will not be able to run tests."
return
}
# TODO: document the steps this is taking.
global srcdir
msg-result "Checking for a suitable tcl... "
proj-assert {proj-opt-truthy tcl}
set use_tcl 1
set with_tclsh [opt-val with-tclsh]
set with_tcl [opt-val with-tcl]
msg-debug "sqlite-check-tcl: use_tcl ${use_tcl}"
msg-debug "sqlite-check-tcl: with_tclsh=${with_tclsh}"
msg-debug "sqlite-check-tcl: with_tcl=$with_tcl"
if {"" eq $with_tclsh && "" eq $with_tcl} {
# If neither --with-tclsh nor --with-tcl are provided, try to find
# a workable tclsh.
set with_tclsh [proj-first-bin-of tclsh9.0 tclsh8.6 tclsh]
msg-debug "sqlite-check-tcl: with_tclsh=${with_tclsh}"
}
if {"" ne $with_tclsh} {
# --with-tclsh was provided. Validate it and use it to trump any
# value passed via --with-tcl=DIR.
if {![file isfile $with_tclsh]} {
proj-fatal "TCL shell $with_tclsh is not a file"
} elseif {![file-isexec $with_tclsh]} {
proj-fatal "TCL shell $with_tclsh is not executable"
} else {
define TCLSH_CMD $with_tclsh
#msg-result "Using tclsh: $with_tclsh"
}
if {[catch {exec $with_tclsh $srcdir/tool/find_tclconfig.tcl} result] == 0} {
set with_tcl $result
}
if {"" ne $with_tcl && [file isdir $with_tcl]} {
msg-result "$with_tclsh recommends the tclConfig.sh from $with_tcl"
} else {
proj-warn "$with_tclsh is unable to recommand a tclConfig.sh"
set use_tcl 0
}
}
set cfg ""
set tclSubdirs {tcl9.0 tcl8.6 lib}
while {1} {
if {$use_tcl} {
if {"" ne $with_tcl} {
# Ensure that we can find tclConfig.sh under ${with_tcl}/...
if {[file readable "${with_tcl}/tclConfig.sh"]} {
set cfg "${with_tcl}/tclConfig.sh"
} else {
foreach i $tclSubdirs {
if {[file readable "${with_tcl}/$i/tclConfig.sh"]} {
set cfg "${with_tcl}/$i/tclConfig.sh"
break
}
}
}
if {"" eq $cfg} {
proj-fatal "No tclConfig.sh found under ${with_tcl}"
}
} else {
# If we have not yet found a tclConfig.sh file, look in
# $libdir which is set automatically by autosetup or by the
# --prefix command-line option. See
# https://sqlite.org/forum/forumpost/e04e693439a22457
set libdir [get-define libdir]
if {[file readable "${libdir}/tclConfig.sh"]} {
set cfg "${libdir}/tclConfig.sh"
} else {
foreach i $tclSubdirs {
if {[file readable "${libdir}/$i/tclConfig.sh"]} {
set cfg "${libdir}/$i/tclConfig.sh"
break
}
}
}
if {![file readable $cfg]} {
proj-indented-notice {
WARNING: Cannot find a usable tclConfig.sh file. Use
--with-tcl=DIR to specify a directory where tclConfig.sh
can be found. SQLite does not use TCL internally, but TCL
is required for testing.
}
break
}
}
msg-result "Using tclConfig.sh: $cfg"
} else {
proj-warn "Unable to run tests because no tclConfig.sh file could be located"
}
break
}
define TCL_CONFIG_SH $cfg
# Export a subset of tclConfig.sh to the current TCL-space. If the
# config is not available, this emits empty-string entries for the
# various options we're interested in.
eval [exec "${srcdir}/tool/tclConfigShToTcl.sh" "$cfg"]
if {"" eq $with_tclsh && $cfg ne ""} {
proj-assert {expr {"" ne [get-define TCL_EXEC_PREFIX]}}
set with_tclsh [get-define TCL_EXEC_PREFIX]/bin/tclsh[get-define TCL_VERSION]
if {![file-isexec $with_tclsh]} {
set with_tclsh2 [get-define TCL_EXEC_PREFIX]/bin/tclsh
if {![file-isexec $with_tclsh2]} {
proj-warn "Cannot find a usable tclsh (tried: $with_tclsh $with_tclsh2)"
} else {
set with_tclsh $with_tclsh2
}
}
}
define TCLSH_CMD $with_tclsh
if {$use_tcl} {
# Set up the TCLLIBDIR and TCLLIB_RPATH
#
# 2024-10-28: calculation of TCLLIBDIR is now done via the shell
# in the main.mk (search it for T.tcllibdir) so that
# static/hand-written makefiles which import main.mk do not have
# to define that before importing main.mk. Even so, we export
# TCLLIBDIR from here for the benefit of those who want to provide
# it at configure-time and have it "stick", without having to
# provide it on each make invocation or set it in their
# environment.
set tcllibdir [get-env TCLLIBDIR ""]
if {"" eq $tcllibdir} {
# Attempt to extract TCLLIBDIR from TCL's $auto_path
if {[catch {exec echo "puts stdout \$auto_path" | "$with_tclsh"} result] == 0} {
foreach i $result {
if {[file isdir $i]} {
set tcllibdir $i/sqlite3
break
}
}
} else {
proj-warn "Cannot determine TCLLIBDIR"
}
}
set tclrpath ""
if {"" ne $tcllibdir} {
set rp [get-define SH_LINKRPATH]
set tclrpath [string map [list "%s" $tcllibdir] $rp]
# Reminder: tclConfig.sh has TCL_LD_SEARCH_FLAGS to set the
# rpath but (A) it includes an unexpand var ref to
# ${LIB_RUNTIME_DIR}, which must be set in the makefile and (B)
# that flag is inherently compiler-dependent so it's not as
# portable as tclConfig.sh assumes. We'll instead use the rpath
# flag which autosetup determines for the current compiler.
}
define TCLLIBDIR $tcllibdir
define TCLLIB_RPATH $tclrpath
#msg-debug "TCLLIB_RPATH = [get-define TCLLIB_RPATH]"
}; # find TCLLIBDIR
if {[file-isexec $with_tclsh]} {
if {$cfg ne ""} {
msg-result "Using tclsh: $with_tclsh"
define HAVE_TCL 1
} else {
proj-warn "Found tclsh but no tclConfig.sh, so cannot build TCL components."
}
} else {
proj-warn "Cannot find a usable tclsh, so cannot build TCL components."
}
show-notices
}; # sqlite-check-tcl
sqlite-check-tcl
########################################################################
# sqlite-determine-codegen-tcl checks which TCL to use as a code
# generator. By default, prefer jimsh simply because we have it
# in-tree (it's part of autosetup) unless --with-tclsh=X is used, in
# which case prefix X.
#
# Returns the human-readable name of the TCL it selects. Fails fatally
# if it cannot detect a TCL appropriate for code generation.
#
# Defines:
#
# - BTCLSH = the TCL shell used for code generation. It may set this
# to an unexpanded makefile var name.
#
# - CFLAGS_JIMSH = any flags needed for buildng a BTCLSH-compatible
# jimsh. The defaults may be pass on to configure as
# CFLAGS_JIMSH=...
set useJimForCodeGen 0 ; # Set to 1 when using jimsh for code generation.
# May affect later decisions.
proc sqlite-determine-codegen-tcl {} {
msg-result "Checking for TCL to use for code generation... "
define CFLAGS_JIMSH [proj-get-env CFLAGS_JIMSH {-O1}]
set cgtcl [opt-val with-tclsh jimsh]
set flagsToRestore {CC CFLAGS CPPFLAGS LDFLAGS LINKFLAGS LIBS CROSS}
define-push $flagsToRestore {
# We have to swap CC to CC_FOR_BUILD for purposes of the various
# [cc-...] tests below. Recall that --with-wasi-sdk may have
# swapped out CC with one which is not appropriate for this block.
# Per consulation with autosetup's creator, doing this properly
# requires us to [define-push] the whole $flagsToRestore list
# (plus a few others which are not relevant in this tree).
foreach flag $flagsToRestore {define $flag ""}
define CC [get-define CC_FOR_BUILD]
if {"jimsh" ne $cgtcl} {
# When --with-tclsh=X is used, use that for all TCL purposes,
# including in-tree code generation, per developer request.
define BTCLSH "\$(TCLSH_CMD)"
} else {
# These headers are technically optional for JimTCL but necessary if
# we want to use it for code generation:
set sysh [cc-check-includes dirent.h sys/time.h]
if {$sysh && [cc-check-functions realpath]} {
define-append CFLAGS_JIMSH -DHAVE_REALPATH
define BTCLSH "\$(JIMSH)"
set ::useJimForCodeGen 1
} elseif {$sysh && [cc-check-functions _fullpath]} {
# _fullpath() is a Windows API
define-append CFLAGS_JIMSH -DHAVE__FULLPATH
define BTCLSH "\$(JIMSH)"
set ::useJimForCodeGen 1
} elseif {[file-isexec [get-define TCLSH_CMD]]} {
set cgtcl [get-define TCLSH_CMD]
define BTCLSH "\$(TCLSH_CMD)"
} else {
# One last-ditch effort to find TCLSH_CMD: use info from
# tclConfig.sh to try to find a tclsh
if {"" eq [get-define TCLSH_CMD]} {
set tpre [get-define TCL_EXEC_PREFIX]
if {"" ne $tpre} {
set tv [get-define TCL_VERSION]
if {[file-isexec "${tpre}/bin/tclsh${tv}"]} {
define TCLSH_CMD "${tpre}/bin/tclsh${tv}"
} elseif {[file-isexec "${tpre}/bin/tclsh"]} {
define TCLSH_CMD "${tpre}/bin/tclsh"
}
}
}
set cgtcl [get-define TCLSH_CMD]
if {![file-isexec $cgtcl]} {
proj-fatal "Cannot find a tclsh to use for code generation."
}
define BTCLSH "\$(TCLSH_CMD)"
}
}
}; # CC swap-out
return $cgtcl
}; # sqlite-determine-codegen-tcl
msg-result "TCL for code generation: [sqlite-determine-codegen-tcl]"
# /TCL
########################################################################
########################################################################
# Thread safety?
msg-checking "Support threadsafe operation? "
proj-if-opt-truthy threadsafe {
msg-result yes
sqlite-add-feature-flag -DSQLITE_THREADSAFE=1
if {![proj-check-function-in-lib pthread_create pthread]
|| ![proj-check-function-in-lib pthread_mutexattr_init pthread]} {
user-error "Missing required pthread bits"
}
define LDFLAGS_PTHREAD [get-define lib_pthread_create]
undefine lib_pthread_create
} {
msg-result no
sqlite-add-feature-flag -DSQLITE_THREADSAFE=0
define LDFLAGS_PTHREAD ""
}
########################################################################
# Do we want temporary databases in memory?
#
if {1} {
set ts [opt-val with-tempstore no]
set tsn 1
msg-checking "Use an in-ram database for temporary tables? "
switch -- $ts {
never { set tsn 0 }
no { set tsn 1 }
yes { set tsn 2 }
always { set tsn 3 }
default {
user-error "Invalid with-tempstore value \[$ts]. Use one of: never, no, yes, always"
}
}
msg-result $ts
define TEMP_STORE $tsn
unset ts tsn
}
########################################################################
# sqlite-check-line-editing jumps through proverbial hoops to try to
# find a working line-editing library, setting:
#
# - HAVE_READLINE to 0 or 1
# - HAVE_LINENOISE to 0, 1, or 2
# - HAVE_EDITLINE to 0 or 1
#
# Only one of ^^^ those will be set to 1.
#
# - LDFLAGS_READLINE = linker flags or empty string
#
# - CFLAGS_READLINE = compilation flags for clients or empty string.
#
# Note that LDFLAGS_READLINE and CFLAGS_READLINE may refer to
# linenoise or editline, not necessarily libreadline. In some cases
# it will set HAVE_READLINE=1 when it's really using editline, for
# reasons described in this function's comments.
#
# Returns a string describing which line-editing approach to use, or
# "none" if no option is available.
#
# Order of checks:
#
# 1) --with-linenoise trumps all others
#
# 2) --editline trumps --readline
#
# 3) --disable-readline trumps --readline
#
# 4) Default to automatic search for optional readline
#
# 5) Try to find readline resp. editline. If it's not found AND the
# corresponding --FEATURE flag was explicitly given, fail fatally,
# else fail silently.
proc sqlite-check-line-editing {} {
msg-result "Checking for line-editing capability..."
define HAVE_READLINE 0
define HAVE_LINENOISE 0
define HAVE_EDITLINE 0
define LDFLAGS_READLINE ""
define CFLAGS_READLINE ""
set failIfNotFound 0 ; # Set to 1 for explicit --FEATURE requests
set libsForReadline {readline edit} ; # -l<LIB> names to check for readline().
# The libedit check changes this.
set editLibName "readline" ; # "readline" or "editline"
set editLibDef "HAVE_READLINE" ; # "HAVE_READLINE" or "HAVE_EDITLINE"
set dirLn [opt-val with-linenoise]
if {"" ne $dirLn} {
# Use linenoise from a copy of its sources (not a library)...
if {![file isdir $dirLn]} {
proj-fatal "--with-linenoise value is not a directory"
}
set lnH $dirLn/linenoise.h
if {![file exists $lnH] } {
proj-fatal "Cannot find linenoise.h in $dirLn"
}
set lnC ""
set lnCOpts {linenoise-ship.c linenoise.c}
foreach f $lnCOpts {
if {[file exists $dirLn/$f]} {
set lnC $dirLn/$f
break;
}
}
if {"" eq $lnC} {
proj-fatal "Cannot find any of $lnCOpts in $dirLn"
}
set flavor ""
set lnVal [proj-which-linenoise $lnH]
switch -- $lnVal {
1 { set flavor "antirez" }
2 { set flavor "msteveb" }
default {
proj-fatal "Cannot determine the flavor of linenoise from $lnH"
}
}
define CFLAGS_READLINE "-I$dirLn $lnC"
define HAVE_LINENOISE $lnVal
sqlite-add-shell-opt -DHAVE_LINENOISE=$lnVal
if {$::useJimForCodeGen && 2 == $lnVal} {
define-append CFLAGS_JIMSH -DUSE_LINENOISE [get-define CFLAGS_READLINE]
user-notice "Adding linenoise support to jimsh."
}
return "linenoise ($flavor)"
} elseif {[opt-bool editline]} {
# libedit mimics libreadline and on some systems does not have its
# own header installed (instead, that of libreadline is used).
#
# shell.c historically expects HAVE_EDITLINE to be set for
# libedit, but it then expects to see <editline/readline.h>, which
# some system's don't actually have, despite having libedit. If
# we end up finding <editline/readline.h> below, we will use
# -DHAVE_EDITLINE=1, else we will use -DHAVE_READLINE=1. In either
# case, we will link against libedit.
set failIfNotFound 1
set libsForReadline {edit}
set editLibName editline
} elseif {![opt-bool readline]} {
msg-result "Readline support explicitly disabled with --disable-readline"
return "none"
} elseif {[proj-opt-was-provided readline]} {
# If an explicit --[enable-]readline was used, fail if it's not
# found, else treat the feature as optional.
set failIfNotFound 1
}
# Transform with-readline-header=X to with-readline-cflags=-I...
set v [opt-val with-readline-header]
proj-opt-set with-readline-header ""
if {"" ne $v} {
if {"auto" eq $v} {
proj-opt-set with-readline-cflags auto
} else {
set v [file dirname $v]
if {[string match */readline $v]} {
# Special case: if the path includes .../readline/readline.h, set
# the -I to one dir up from that because our sources include
# <readline/readline.h> or <editline/readline.h>. Reminder: if
# auto.def is being run by jimsh0 then [file normalize] will not
# work!
set v [file dirname $v]
}
proj-opt-set with-readline-cflags "-I$v"
}
}
# Look for readline.h
set rlInc [opt-val with-readline-cflags auto]
if {"auto" eq $rlInc} {
set rlInc ""
if {$::isCrossCompiling} {
# ^^^ this check is derived from the legacy configure script.
proj-warn "Skipping check for readline.h because we're cross-compiling."
} else {
set dirs "[get-define prefix] /usr /usr/local /usr/local/readline /usr/contrib /mingw"
set subdirs "include/$editLibName"
if {"editline" eq $editLibName} {
lappend subdirs include/readline
# ^^^ editline, on some systems, does not have its own header,
# and uses libreadline's header.
}
lappend subdirs include
# ^^^ The dirs and subdirs lists are, except for the inclusion
# of $prefix and editline, from the legacy configure script
set rlInc [proj-search-for-header-dir readline.h \
-dirs $dirs -subdirs $subdirs]
if {"" ne $rlInc} {
if {[string match */readline $rlInc]} {
set rlInc [file dirname $rlInc]; # shell #include's <readline/readline.h>
} elseif {[string match */editline $rlInc]} {
set editLibDef HAVE_EDITLINE
set rlInc [file dirname $rlInc]; # shell #include's <editline/readline.h>
}
set rlInc "-I${rlInc}"
}
}
} elseif {"" ne $rlInc && ![string match *-I* $rlInc]} {
proj-fatal "Argument to --with-readline-cflags is intended to be CFLAGS and contain -I..."
}
# If readline.h was found/specified, look for lib(readline|edit)...
#
# This is not quite straightforward because both libreadline and
# libedit typically require some other library which (according to
# legacy autotools-generated tests) provides tgetent(3). On some
# systems that's built into libreadline/edit, on some (most?) its in
# lib[n]curses, and on some it's in libtermcap.
set rlLib ""
if {"" ne $rlInc} {
set rlLib [opt-val with-readline-ldflags]
if {"" eq $rlLib || "auto" eq $rlLib} {
set rlLib ""
set libTerm ""
if {[proj-check-function-in-lib tgetent "$editLibName ncurses curses termcap"]} {
# ^^^ that libs list comes from the legacy configure script ^^^
set libTerm [get-define lib_tgetent]
undefine lib_tgetent
}
if {$editLibName eq $libTerm} {
set rlLib $libTerm
} elseif {[proj-check-function-in-lib readline $libsForReadline $libTerm]} {
set rlLib [get-define lib_readline]
lappend rlLib $libTerm
undefine lib_readline
}
}
}
# If we found a library, configure the build to use it...
if {"" ne $rlLib} {
if {"editline" eq $editLibName && "HAVE_READLINE" eq $editLibDef} {
# Alert the user that, despite outward appearances, we won't be
# linking to the GPL'd libreadline. Presumably that distinction is
# significant for those using --editline.
proj-indented-notice {
NOTE: the local libedit but uses <readline/readline.h> so we
will compile with -DHAVE_READLINE=1 but will link with
libedit.
}
}
set rlLib [join $rlLib]
set rlInc [join $rlInc]
define LDFLAGS_READLINE $rlLib
define CFLAGS_READLINE $rlInc
proj-assert {expr {$editLibDef in {HAVE_READLINE HAVE_EDITLINE}}}
proj-assert {expr {$editLibName in {readline editline}}}
sqlite-add-shell-opt -D${editLibDef}=1
msg-result "Using $editLibName flags: $rlInc $rlLib"
# Check whether rl_completion_matches() has a signature we can use
# and disable that sub-feature if it doesn't.
if {![cctest \
-cflags "$rlInc -D${editLibDef}" -libs $rlLib -nooutput 1 -source {
#include <stdio.h>
#ifdef HAVE_EDITLINE
#include <editline/readline.h>
#else
#include <readline/readline.h>
#endif
static char * rcg(const char *z, int i){(void)z; (void)i; return 0;}
int main(void) {
char ** x = rl_completion_matches("one", rcg);
(void)x;
return 0;
}
}]} {
user-notice "WARNING: readline-style completion disabled due to rl_completion_matches() signature mismatch"
show-notices
sqlite-add-shell-opt -DSQLITE_OMIT_READLINE_COMPLETION
}
return $editLibName
}
if {$failIfNotFound} {
proj-fatal "Explicit --$editLibName failed to find a matching library."
}
return "none"
}; # sqlite-check-line-editing
msg-result "Line-editing support for the sqlite3 shell: [sqlite-check-line-editing]"
proj-if-opt-truthy load-extension {
if {[proj-check-function-in-lib dlopen dl]} {
define LDFLAGS_DLOPEN [get-define lib_dlopen]
undefine lib_dlopen
} else {
user-error "dlopen() not found. Use --disable-load-extension to bypass this check."
}
} {
define LDFLAGS_DLOPEN ""
sqlite-add-feature-flag {-DSQLITE_OMIT_LOAD_EXTENSION=1}
msg-result "Disabling loadable extensions."
}
proj-if-opt-truthy math {
if {![proj-check-function-in-lib ceil m]} {
user-error "Cannot find libm functions. Use --disable-math to bypass this."
}
define LDFLAGS_MATH [get-define lib_ceil]
undefine lib_ceil
sqlite-add-feature-flag {-DSQLITE_ENABLE_MATH_FUNCTIONS}
msg-result "Enabling math SQL functions [get-define LDFLAGS_MATH]"
} {
define LDFLAGS_MATH ""
msg-result "Disabling math SQL functions"
}
########################################################################
# ICU - International Components for Unicode
#
# Handles these flags:
#
# --with-icu-ldflags=LDFLAGS
# --with-icu-config[=/path/to/icu-config]
# --enable-icu-collations
#
# If both icu-ldflags and icu-config are provided, they are
# cumulative. If neither are provided, icu-collations is not honored
# and a warning is emitted if it is provided.
#
# Design note: though we can automatically enable ICU if the
# icu-config binary is found, we specifically do not. ICU is always an
# opt-in feature.
proc sqlite-check-icu {} {
define LDFLAGS_ICU [join [opt-val with-icu-ldflags ""]]
# Flags sets seen in the wild for ICU:
# - -licui18n -licuuc -licudata
# - -licui18n -licuuc
# - /usr/local/bin/icu-config --ldflags
if {[proj-opt-was-provided with-icu-config]} {
set bin [opt-val with-icu-config]
if {"auto" eq $bin} {
set bin [proj-first-bin-of \
[get-define prefix]/bin/icu-config \
/usr/local/bin/icu-config \
/usr/bin/icu-config]
if {"" eq $bin} {
proj-fatal "--with-icu-config=auto cannot find icu-config binary"
}
}
if {[file-isexec $bin]} {
set x [exec $bin --ldflags]
if {"" eq $x} {
proj-fatal "$bin --ldflags returned no data"
}
define-append LDFLAGS_ICU $x
} else {
proj-fatal "--with-icu-config=$bin does not refer to an executable"
}
}
set flags [define LDFLAGS_ICU [string trim [get-define LDFLAGS_ICU]]]
if {"" ne $flags} {
sqlite-add-feature-flag -shell -DSQLITE_ENABLE_ICU
msg-result "Enabling ICU support with libs: $flags"
if {[opt-bool icu-collations]} {
msg-result "Enabling ICU collations."
sqlite-add-feature-flag -shell -DSQLITE_ENABLE_ICU_COLLATIONS
# Recall that shell.c builds with sqlite3.c
}
} elseif {[opt-bool icu-collations]} {
proj-warn "ignoring --enable-icu-collations because neither --with-icu-ldflags nor --with-icu-config provided any linker flags"
} else {
msg-result "ICU support is disabled."
}
}; # sqlite-check-icu
sqlite-check-icu
########################################################################
# Emscripten SDK for building the web-based wasm components.
#
proc sqlite-check-emsdk {} {
set emccsh $::srcdir/tool/emcc.sh
if {![get-define HAVE_WASI_SDK] && [proj-check-emsdk]} {
define EMCC_WRAPPER $emccsh
proj-make-from-dot-in $emccsh
catch {exec chmod u+x $emccsh}
} else {
define EMCC_WRAPPER ""
file delete -force $emccsh
}
}
sqlite-check-emsdk
########################################################################
# Check for log(3) in libm and die with an error if it is not
# found. $featureName should be the feature name which requires that
# function (it's used only in error messages). defines LDFLAGS_MATH to
# the required linker flags (which may be empty even if the math APIs
# are found, depending on the OS).
proc affirm-have-math {featureName} {
if {![msg-quiet proj-check-function-in-lib log m]} {
user-error "Missing math APIs for $featureName"
}
define LDFLAGS_MATH [get-define lib_log ""]
undefine lib_log
}
########################################################################
# Handle various SQLITE_ENABLE_... feature flags.
msg-result "Feature flags..."
foreach {boolFlag featureFlag ifSetEvalThis} {
all {} {
proj-opt-set fts4
proj-opt-set fts5
proj-opt-set geopoly
proj-opt-set rtree
proj-opt-set session
}
fts4 -DSQLITE_ENABLE_FTS4 {affirm-have-math fts4}
fts5 -DSQLITE_ENABLE_FTS5 {affirm-have-math fts5}
geopoly -DSQLITE_ENABLE_GEOPOLY {proj-opt-set rtree}
rtree -DSQLITE_ENABLE_RTREE {}
session {-DSQLITE_ENABLE_SESSION -DSQLITE_ENABLE_PREUPDATE_HOOK} {}
update-limit -DSQLITE_ENABLE_UPDATE_DELETE_LIMIT {}
memsys5 -DSQLITE_ENABLE_MEMSYS5 {}
memsys3 {} {
if {[opt-bool memsys5]} {
proj-warn "not enabling memsys3 because memsys5 is enabled."
expr 0
} else {
sqlite-add-feature-flag -DSQLITE_ENABLE_MEMSYS3
}
}
} {
proj-if-opt-truthy $boolFlag {
sqlite-add-feature-flag $featureFlag
if {0 != [eval $ifSetEvalThis] && "all" ne $boolFlag} {
msg-result " + $boolFlag"
}
} {
if {"all" ne $boolFlag} {
msg-result " - $boolFlag"
}
}
}
########################################################################
# Invert the above loop's logic for some explicit SQLITE_OMIT_...
# cases. If config option $boolFlag is set, [sqlite-add-feature-flag
# $featureFlag], where $featureFlag is intended to be
# -DSQLITE_OMIT_...
foreach {boolFlag featureFlag} {
json -DSQLITE_OMIT_JSON
} {
if {[proj-opt-truthy $boolFlag]} {
msg-result " + $boolFlag"
} else {
sqlite-add-feature-flag $featureFlag
msg-result " - $boolFlag"
}
}
#########################################################################
# Show the final feature flag sets:
set oFF [get-define OPT_FEATURE_FLAGS]
if {"" ne $oFF} {
define OPT_FEATURE_FLAGS [lsort -unique $oFF]
msg-result "Library feature flags: [get-define OPT_FEATURE_FLAGS]"
}
set oFF [get-define OPT_SHELL]
if {"" ne $oFF} {
define OPT_SHELL [lsort -unique $oFF]
msg-result "Shell options: [get-define OPT_SHELL]"
}
unset oFF
########################################################################
# "Re-export" the autoconf-conventional --XYZdir flags into something
# which is more easily overridable from a make invocation. See the docs
# for [proj-remap-autoconf-dir-vars] for the explanation of why.
#
# We do this late in the config process, immediately before we export
# the Makefile and other generated files, so that configure tests
# which may make use of the autotools-conventional flags
# (e.g. [proj-check-rpath]) may do so before we "mangle" them here.
proj-remap-autoconf-dir-vars
########################################################################
# Generate the output files.
#
# Potential TODO (unclear): in sqlite3.pc.in, do we need to include
# any CFLAGS_READLINE, CFLAGS_ZLIB, etc in its "Cflags:" section?
proj-make-from-dot-in -touch Makefile sqlite3.pc
if {0} {
# Requires a hand-written sqlite_cfg.h.in...
proj-make-from-dot-in sqlite_cfg.h
# vs...
} else {
# Requires no input template...
make-config-header sqlite_cfg.h \
-bare {SIZEOF_* HAVE_DECL_*} \
-none {HAVE_CFLAG_* LDFLAGS_* SH_* SQLITE_AUTORECONFIG
TARGET_* USE_GCOV TCL_*} \
-auto {HAVE_* PACKAGE_*} \
-none *
proj-touch sqlite_cfg.h ; # help avoid frequent unnecessary @SQLITE_AUTORECONFIG@
}
########################################################################
# Some build-dev/debug-only output
proj-if-opt-truthy dump-defines {
make-config-header $::DUMP_DEFINES_TXT \
-bare {SQLITE_OS* SQLITE_DEBUG USE_*} \
-str {BIN_* CC LD AR LDFLAG* OPT_*} \
-auto {*}
# achtung: ^^^^ whichever SQLITE_OS_foo flag which is set to 0 will
# get _undefined_ here unless it's part of the -bare set.
if {"" ne $DUMP_DEFINES_JSON} {
msg-result "--dump-defines is creating $::DUMP_DEFINES_JSON"
########################################################################
# Dump config-defines.json...
# Demonstrate (mis?)handling of spaces in JSON-export array values:
# define-append OPT_FOO.list {"-DFOO=bar baz" -DBAR="baz barre"}
define OPT_FEATURE_FLAGS.list [get-define OPT_FEATURE_FLAGS]
define OPT_SHELL.list [get-define OPT_SHELL]
set dumpDefsOpt {
-bare {SIZEOF_* HAVE_DECL_*}
-none {HAVE_CFLAG_* LDFLAGS_* SH_* SQLITE_AUTORECONFIG TARGET_* USE_GCOV TCL_*}
-array {*.list}
-auto {OPT_* PACKAGE_* HAVE_*}
}
if {[opt-bool defines-json-include-lowercase]} {
lappend dumpDefsOpt -none {lib_*} ; # remnants from proj-check-function-in-lib and friends
lappend dumpDefsOpt -auto {[a-z]*}
}
lappend dumpDefsOpt -none *
proj-dump-defs-json $DUMP_DEFINES_JSON {*}$dumpDefsOpt
undefine OPT_FEATURE_FLAGS.list
undefine OPT_SHELL.list
}
}
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