configure

   1 #!/bin/sh
   2 #
   3 # tcc configure script (c) 2003 Fabrice Bellard
   4
   5 # set temporary file name
   6 # if test ! -z "$TMPDIR" ; then
   7 #     TMPDIR1="${TMPDIR}"
   8 # elif test ! -z "$TEMPDIR" ; then
   9 #     TMPDIR1="${TEMPDIR}"
  10 # else
  11 #     TMPDIR1="/tmp"
  12 # fi
  13 #
  14 # bashism: TMPN="${TMPDIR1}/tcc-conf-${RANDOM}-$$-${RANDOM}.c"
  15
  16 TMPN="./conftest-$$"
  17 TMPH=$TMPN.h
  18
  19 # default parameters
  20 prefix=""
  21 execprefix=""
  22 bindir=""
  23 libdir=""
  24 tccdir=""
  25 includedir=""
  26 mandir=""
  27 infodir=""
  28 sysroot=""
  29 cross_prefix=""
  30 cc="gcc"
  31 ar="ar"
  32 bigendian="no"
  33 mingw32="no"
  34 LIBSUF=".a"
  35 EXESUF=""
  36 DLLSUF=".so"
  37 tcc_usrinclude=""
  38 tcc_sysincludepaths=""
  39 tcc_libpaths=""
  40 tcc_crtprefix=""
  41 tcc_elfinterp=""
  42 triplet=
  43 tcc_lddir=
  44 confvars=
  45 suggest="yes"
  46 gcc_major=0
  47 gcc_minor=0
  48 cc_name="gcc"
  49 ar_set=
  50 cpu=
  51 cpuver=
  52 dwarf=
  53 targetos=
  54 build_cross=
  55
  56 # use CC/AR from environment when set
  57 test -n "$CC" && cc="$CC"
  58 test -n "$AR" && ar="$AR"
  59
  60 # find source path
  61 source_path=${0%configure}
  62 source_path=${source_path%/}
  63
  64 for opt do
  65   eval opt=\"$opt\"
  66   case "$opt" in
  67   --prefix=*) prefix=`echo $opt | cut -d '=' -f 2-`
  68   ;;
  69   --exec-prefix=*) execprefix=`echo $opt | cut -d '=' -f 2-`
  70   ;;
  71   --tccdir=*) tccdir=`echo $opt | cut -d '=' -f 2-`
  72   ;;
  73   --bindir=*) bindir=`echo $opt | cut -d '=' -f 2-`
  74   ;;
  75   --libdir=*) libdir=`echo $opt | cut -d '=' -f 2-`
  76   ;;
  77   --includedir=*) includedir=`echo $opt | cut -d '=' -f 2-`
  78   ;;
  79   --sharedir=*) sharedir=`echo $opt | cut -d '=' -f 2-`
  80   ;;
  81   --mandir=*) mandir=`echo $opt | cut -d '=' -f 2-`
  82   ;;
  83   --infodir=*) infodir=`echo $opt | cut -d '=' -f 2-`
  84   ;;
  85   --docdir=*) docdir=`echo $opt | cut -d '=' -f 2-`
  86   ;;
  87   --sysroot=*) sysroot=`echo $opt | cut -d '=' -f 2-`
  88   ;;
  89   --targetos=*) targetos=`echo $opt | cut -d '=' -f 2-`
  90   ;;
  91   --source-path=*) source_path=`echo $opt | cut -d '=' -f 2-`
  92   ;;
  93   --cross-prefix=*) cross_prefix=`echo $opt | cut -d '=' -f 2-`
  94   ;;
  95   --cc=*) cc=`echo $opt | cut -d '=' -f 2-`
  96   ;;
  97   --ar=*) ar=`echo $opt | cut -d '=' -f 2-` ; ar_set="yes"
  98   ;;
  99   --extra-cflags=*) CFLAGS="${opt#--extra-cflags=}"
 100   ;;
 101   --extra-ldflags=*) LDFLAGS="${opt#--extra-ldflags=}"
 102   ;;
 103   --extra-libs=*) extralibs="${opt#--extra-libs=}"
 104   ;;
 105   --sysincludepaths=*) tcc_sysincludepaths=`echo $opt | cut -d '=' -f 2-`
 106   ;;
 107   --libpaths=*) tcc_libpaths=`echo $opt | cut -d '=' -f 2-`
 108   ;;
 109   --crtprefix=*) tcc_crtprefix=`echo $opt | cut -d '=' -f 2-`
 110   ;;
 111   --elfinterp=*) tcc_elfinterp=`echo $opt | cut -d '=' -f 2-`
 112   ;;
 113   --triplet=*) triplet=`echo $opt | cut -d '=' -f 2-`
 114   ;;
 115   --cpu=*) cpu=`echo $opt | cut -d '=' -f 2-`
 116   ;;
 117   --dwarf=*) dwarf=`echo $opt | cut -d '=' -f 2-`
 118   ;;
 119   --enable-cross) confvars="$confvars cross"
 120   ;;
 121   --disable-static) confvars="$confvars static=no"
 122   ;;
 123   --enable-static) confvars="$confvars static"
 124   ;;
 125   --disable-rpath) confvars="$confvars rpath=no"
 126   ;;
 127   --debug) confvars="$confvars debug"
 128   ;;
 129   --with-libgcc) confvars="$confvars libgcc"
 130   ;;
 131   --with-selinux) confvars="$confvars selinux"
 132   ;;
 133   --tcc-switches=*) tcc_switches=`echo $opt | cut -d '=' -f 2-`
 134   ;;
 135   --config-mingw32*) mingw32=$(echo "$opt=yes" | cut -d '=' -f 2)
 136   ;;
 137   --config-*) confvars="$confvars ${opt#--config-}"; suggest="no"
 138   ;;
 139   --help|-h) show_help="yes"
 140   ;;
 141   *) echo "configure: WARNING: unrecognized option $opt"
 142   ;;
 143   esac
 144 done
 145
 146 show_help() {
 147 cat << EOF
 148 Usage: configure [options]
 149 Options: [defaults in brackets after descriptions]
 150
 151 Standard options:
 152   --help                   print this message
 153   --prefix=PREFIX          install in PREFIX [$prefix]
 154   --exec-prefix=EPREFIX    install architecture-dependent files in EPREFIX
 155                            [same as prefix]
 156   --bindir=DIR             user executables in DIR [EPREFIX/bin]
 157   --libdir=DIR             object code libraries in DIR [EPREFIX/lib]
 158   --tccdir=DIR             installation directory [EPREFIX/lib/tcc]
 159   --includedir=DIR         C header files in DIR [PREFIX/include]
 160   --sharedir=DIR           documentation root DIR [PREFIX/share]
 161   --docdir=DIR             documentation in DIR [SHAREDIR/doc/tcc]
 162   --mandir=DIR             man documentation in DIR [SHAREDIR/man]
 163   --infodir=DIR            info documentation in DIR [SHAREDIR/info]
 164
 165 Advanced options (experts only):
 166   --source-path=PATH       path of source code [$source_path]
 167   --sysroot=PREFIX         prepend PREFIX to library/include paths [$sysroot]
 168   --cc=CC                  use C compiler CC [$cc]
 169   --ar=AR                  create archives using AR [$ar]
 170   --extra-cflags=          specify compiler flags [$CFLAGS]
 171   --extra-ldflags=         specify linker options [$LDFLAGS]
 172
 173   --debug                  include debug info with resulting binaries
 174   --disable-static         make libtcc.so instead of libtcc.a
 175   --enable-static          make libtcc.a instead of libtcc.dll (win32)
 176   --disable-rpath          disable use of -rpath with libtcc.so
 177   --with-libgcc            use libgcc_s.so.1 instead of libtcc1.a
 178   --with-selinux           use mmap for executable memory (tcc -run)
 179   --enable-cross           build cross compilers (see also 'make help')
 180
 181   --sysincludepaths=...    specify system include paths, colon separated
 182   --libpaths=...           specify system library paths, colon separated
 183   --crtprefix=...          specify locations of crt?.o, colon separated
 184   --elfinterp=...          specify elf interpreter
 185   --triplet=...            specify system library/include directory triplet
 186   --tcc-switches=...       specify implicit switches passed to tcc
 187
 188   --config-uClibc,-musl    enable system specific configurations
 189   --config-mingw32         build on windows using msys, busybox, etc.
 190   --config-backtrace=no    disable stack backtraces (with -run or -bt)
 191   --config-bcheck=no       disable bounds checker (-b)
 192   --config-predefs=no      do not compile tccdefs.h, instead just include
 193   --config-new_macho=no|yes Force apple object format (autodetect osx <= 10)
 194   --config-codesign=no     do not use codesign on apple to sign executables
 195   --dwarf=x                Use dwarf debug info instead of stabs (x=2..5)
 196
 197 Cross build options (experimental):
 198   --cpu=CPU                target CPU [$cpu]
 199   --targetos=...           target OS (Darwin,WIN32,Android/Termux) [$targetos]
 200   --cross-prefix=PREFIX    use PREFIX for compile tools [$cross_prefix]
 201 EOF
 202 exit 1
 203 }
 204
 205 default() # set variable unless already set
 206 {
 207     local v
 208     eval v=\"\$$1\"
 209     test -z "$v" && eval $1=\"$2\"
 210 }
 211
 212 default_conf() # add to confvars unless already present
 213 {
 214     local v=${1%=*}
 215     test "${confvars%$v*}" = "${confvars}" && confvars="$confvars $1"
 216 }
 217
 218 if test -z "$source_path" -o "$source_path" = "." ; then
 219   source_path=$(pwd)
 220   source_path_used="no"
 221 else
 222   source_path_used="yes"
 223 fi
 224
 225 # OS specific
 226 buildos=$(uname)
 227
 228 case $buildos in
 229   Windows_NT|MINGW*|MSYS*|CYGWIN*)
 230     buildos="WIN32"
 231   ;;
 232   Linux)
 233     if test "$(uname -o)" = "Android"; then
 234       buildos=Android
 235       if test -n "$TERMUX_VERSION"; then
 236         buildos=Termux
 237       fi
 238     fi
 239   ;;
 240 esac
 241
 242 if test "$mingw32" = "yes"; then
 243   default targetos WIN32
 244 else
 245   default targetos "$buildos"
 246 fi
 247
 248 cpu_sys=$(uname -m)
 249 default cpu "$cpu_sys"
 250 cpu_set="$cpu"
 251
 252 # check for crpss build
 253 if test "$cpu_set" != "$cpu_sys" \
 254   -o "$targetos" != "$buildos" \
 255   -o -n "$cross_prefix" ; then
 256   build_cross="yes"
 257   cc="${cross_prefix}${cc}"
 258   ar="${cross_prefix}${ar}"
 259 fi
 260
 261 case "$cpu" in
 262   x86|i386|i486|i586|i686|i86pc|BePC|i686-AT386)
 263     cpu="i386"
 264   ;;
 265   x86_64|amd64|x86-64)
 266     cpu="x86_64"
 267   ;;
 268   evbarm)
 269     case "`uname -p`" in
 270       aarch64|arm64)
 271         cpu="arm64"
 272         ;;
 273       earmv*)
 274         cpu="arm"
 275         ;;
 276     esac
 277   ;;
 278   aarch64|arm64|evbarm)
 279     cpu="arm64"
 280   ;;
 281   arm*)
 282     case "$cpu" in
 283       arm|armv4l)
 284         cpuver=4
 285       ;;
 286       armv5tel|armv5tejl)
 287         cpuver=5
 288       ;;
 289       armv6j|armv6l)
 290         cpuver=6
 291       ;;
 292       armv7|armv7a|armv7l)
 293         cpuver=7
 294       ;;
 295     esac
 296     cpu="arm"
 297   ;;
 298   alpha)
 299     cpu="alpha"
 300   ;;
 301   "Power Macintosh"|ppc|ppc64)
 302     cpu="ppc"
 303   ;;
 304   mips)
 305     cpu="mips"
 306   ;;
 307   s390)
 308     cpu="s390"
 309   ;;
 310   riscv64)
 311     cpu="riscv64"
 312   ;;
 313   *)
 314     echo "Unsupported CPU"
 315     exit 1
 316   ;;
 317 esac
 318
 319 case $targetos in
 320   Darwin)
 321     dwarf=4
 322     confvars="$confvars OSX"
 323     default_conf "codesign"
 324     DLLSUF=".dylib"
 325     if test -z "$build_cross"; then
 326       cc=`command -v cc`
 327       cc=`readlink $cc || echo clang`
 328       tcc_usrinclude="`xcrun --show-sdk-path`/usr/include"
 329       if test "${confvars%new_macho*}" = "${confvars}"; then
 330           # if new_macho was not specified and (known) ver <= 10, use old (=no)
 331           osxver=$(sw_vers -productVersion 2>/dev/null)  # X.Y.Z
 332           osxver=${osxver%%.*}  # major version (or empty on sw_vers error)
 333           [ "${osxver:-11}" -ge 11 ] || confvars="$confvars new_macho=no"
 334       fi
 335     fi
 336     # on OSX M1 with --cpu=x86_64, build a tcc to run under rosetta entirely
 337     if test "$cpu" = "x86_64" -a "$cpu_sys" = "arm64"; then
 338         CFLAGS="$CFLAGS -arch $cpu"
 339         LDFLAGS="$LDFLAGS -arch $cpu"
 340     fi
 341     ;;
 342   DragonFly|OpenBSD|FreeBSD|NetBSD)
 343     confvars="$confvars BSD ldl=no"
 344     ;;
 345   Android|Termux)
 346     if test "$targetos" = "Termux"; then
 347       targetos=Android
 348       default sysroot "/data/data/com.termux/files/usr"
 349     else
 350       default sysroot "/usr"
 351     fi
 352     default prefix "${sysroot}"
 353     confvars="$confvars Android new-dtags rpath=no"
 354     test "${cpu}" != "i386" && confvars="$confvars pie"
 355     default_conf "static=no"
 356     if test "${cpu}" = "arm"; then
 357       default triplet "arm-linux-androideabi"
 358       cpuver=7
 359     else
 360       default triplet "${cpu_set}-linux-android"
 361     fi
 362     test "${cpu%64}" != "${cpu}" && S="64" || S=""
 363     default tcc_sysincludepaths "{B}/include:{R}/include:{R}/include/${triplet}"
 364     default tcc_libpaths "{B}:{R}/lib:/system/lib${S}"
 365     default tcc_crtprefix "{R}/lib"
 366     default tcc_elfinterp "/system/bin/linker${S}"
 367     default tcc_switches "-Wl,-rpath=$sysroot/lib,-section-alignment=0x1000"
 368     ;;
 369   WIN32)
 370     mingw32="yes"
 371     confvars="$confvars WIN32"
 372     default prefix "C:/Program Files/tcc"
 373     default tccdir "${prefix}"
 374     default bindir "${tccdir}"
 375     default docdir "${tccdir}/doc"
 376     default libdir "${tccdir}/libtcc"
 377     test "$tccdir" = "$bindir" && tccdir_auto="yes"
 378     LIBSUF=".lib"
 379     EXESUF=".exe"
 380     DLLSUF=".dll"
 381     if test "$source_path_used" = "no"; then
 382       source_path="."
 383     fi
 384     ;;
 385   *)
 386     ;;
 387 esac
 388
 389 if test "$mingw32" = "no"; then
 390   default prefix       "/usr/local"
 391   default execprefix   "${prefix}"
 392   default libdir       "${execprefix}/lib"
 393   default bindir       "${execprefix}/bin"
 394   default tccdir       "${libdir}/tcc"
 395   default includedir   "${prefix}/include"
 396   default sharedir     "${prefix}/share"
 397   default docdir       "${sharedir}/doc"
 398   default mandir       "${sharedir}/man"
 399   default infodir      "${sharedir}/info"
 400 fi
 401
 402 # set default CFLAGS
 403 default CFLAGS "-Wall -O2"
 404
 405 if test "$mingw32" = "yes" -a "$cc_name" = "gcc"; then
 406   # avoid mingw dependencies such as 'libgcc_s_dw2-1.dll'
 407   default LDFLAGS "-static"
 408 fi
 409
 410 if test x"$show_help" = "xyes" ; then
 411     show_help
 412 fi
 413
 414 if test -z "$build_cross"; then
 415   CONFTEST=./conftest$EXESUF
 416   if ! $cc -o $CONFTEST $source_path/conftest.c ; then
 417     echo "configure: error: '$cc' failed to compile conftest.c."
 418   else
 419     cc_name="$($CONFTEST compiler)"
 420     gcc_major="$($CONFTEST version)"
 421     gcc_minor="$($CONFTEST minor)"
 422     bigendian="$($CONFTEST bigendian)"
 423     _triplet="$($CONFTEST triplet)"
 424   fi
 425   if test "$mingw32" = "no" ; then
 426       if test -z "$triplet" -a -n "$_triplet"; then
 427         if test -f "/usr/lib/$_triplet/crti.o"; then
 428           triplet="$_triplet"
 429         fi
 430       fi
 431       if test -z "$triplet"; then
 432         if test $cpu = "x86_64" -o $cpu = "arm64" -o $cpu = "riscv64" ; then
 433           if test -f "/usr/lib64/crti.o" ; then
 434             tcc_lddir="lib64"
 435           fi
 436         fi
 437       fi
 438       if test "$suggest" = "yes"; then
 439         if test -f "/lib/ld-uClibc.so.0" ; then
 440           echo "Perhaps you want ./configure --config-uClibc"
 441         fi
 442         if test -f "/lib/ld-musl-$cpu.so.1"; then
 443           echo "Perhaps you want ./configure --config-musl"
 444         fi
 445       fi
 446   fi
 447 else
 448   # can only make guesses about compiler and target
 449   if test "${cc%tcc*}" != "$cc"; then
 450     cc_name="tcc"
 451   elif test "${cc%clang*}" != "$cc"; then
 452     cc_name="clang"
 453   fi
 454   case $cpu in
 455     ppc|mips|s390)  bigendian=yes;;
 456   esac
 457   case $targetos in
 458     Linux)
 459       default triplet "$cpu_set-linux-gnu"
 460   esac
 461 fi
 462
 463 if test "$bigendian" = "yes" ; then
 464   confvars="$confvars BIGENDIAN"
 465 fi
 466
 467 if test "$cpu" = "arm"; then
 468   if test "${triplet%eabihf}" != "$triplet" ; then
 469     confvars="$confvars arm_eabihf arm_vfp"
 470   elif test "${triplet%eabi}" != "$triplet" ; then
 471     confvars="$confvars arm_eabi arm_vfp"
 472   elif test -z "$build_cross"; then
 473     if test "${_triplet%eabihf}" != "$_triplet" ; then
 474       confvars="$confvars arm_eabihf arm_vfp"
 475     elif test "${_triplet%eabi}" != "$_triplet" ; then
 476       confvars="$confvars arm_eabi arm_vfp"
 477     elif grep -s -q "^Features.* \(vfp\|iwmmxt\) " /proc/cpuinfo ; then
 478       confvars="$confvars arm_vfp"
 479     fi
 480   fi
 481 fi
 482
 483 # a final configuration tuning
 484 if test "$cc_name" != "tcc"; then
 485   OPT1="-Wdeclaration-after-statement -fno-strict-aliasing"
 486   # we want -Wno- but gcc does not always reject unknown -Wno- options
 487   OPT2="-Wpointer-sign -Wsign-compare -Wunused-result -Wformat-truncation"
 488   OPT2="$OPT2 -Wstringop-truncation"
 489   if test "$cc_name" = "clang"; then
 490     OPT1="$OPT1 -fheinous-gnu-extensions"
 491     OPT2="$OPT2 -Wstring-plus-int -Wdeprecated-declarations"
 492   fi
 493   $cc $OPT1 $OPT2 -o a.out -c -xc - < /dev/null > cc_msg.txt 2>&1
 494   for o in $OPT1; do # enable these options
 495     if ! grep -q -- $o cc_msg.txt; then CFLAGS="$CFLAGS $o"; fi
 496   done
 497   for o in $OPT2; do # disable these options
 498     if ! grep -q -- $o cc_msg.txt; then CFLAGS="$CFLAGS -Wno-${o#-W*}"; fi
 499   done
 500   # cat cc_msg.txt
 501   # echo $CFLAGS
 502   rm -f cc_msg.txt a.out
 503 else # cc is tcc
 504   test "$ar_set" || ar="$cc -ar"
 505 fi
 506
 507 fcho() { if test -n "$2"; then echo "$1$2"; fi }
 508
 509 fcho "Binary directory    " "$bindir"
 510 fcho "TinyCC directory    " "$tccdir"
 511 fcho "Library directory   " "$libdir"
 512 fcho "Include directory   " "$includedir"
 513 fcho "Manual directory    " "$mandir"
 514 fcho "Info directory      " "$infodir"
 515 fcho "Doc directory       " "$docdir"
 516 fcho "Target root prefix  " "$sysroot"
 517 fcho "/usr/include dir    " "$tcc_usrinclude"
 518 echo "Source path         $source_path"
 519 echo "C compiler          $cc ($gcc_major.$gcc_minor)"
 520 echo "Target OS           $targetos"
 521 echo "CPU                 $cpu"
 522 fcho "Triplet             " "$triplet"
 523 fcho "Libs                " "$tcc_libpaths"
 524 fcho "Sysinclude          " "$tcc_sysincludepaths"
 525 fcho "Crt                 " "$tcc_crtprefix"
 526 fcho "Elfinterp           " "$tcc_elfinterp"
 527 fcho "Switches            " "$tcc_switches"
 528 fcho "Config              " "${confvars# }"
 529 echo "Creating config.mak and config.h"
 530
 531 cat >config.mak <<EOF
 532 # Automatically generated by configure - do not modify
 533 prefix=$prefix
 534 bindir=\$(DESTDIR)$bindir
 535 tccdir=\$(DESTDIR)$tccdir
 536 libdir=\$(DESTDIR)$libdir
 537 includedir=\$(DESTDIR)$includedir
 538 mandir=\$(DESTDIR)$mandir
 539 infodir=\$(DESTDIR)$infodir
 540 docdir=\$(DESTDIR)$docdir
 541 CC=$cc
 542 CC_NAME=$cc_name
 543 GCC_MAJOR=$gcc_major
 544 GCC_MINOR=$gcc_minor
 545 AR=$ar
 546 CFLAGS=$CFLAGS
 547 LDFLAGS=$LDFLAGS
 548 LIBSUF=$LIBSUF
 549 EXESUF=$EXESUF
 550 DLLSUF=$DLLSUF
 551 EOF
 552
 553 print_inc() {
 554   local v="$2"
 555   if test -n "$v"; then
 556     test "$3" = "num" || v="\"$v\""
 557     echo "#ifndef $1" >> $TMPH
 558     echo "# define $1 $v" >> $TMPH
 559     echo "#endif" >> $TMPH
 560   fi
 561 }
 562
 563 print_mak() {
 564   local v="$2"
 565   if test -n "$v"; then
 566     test "$3" = "num" || v="\"\\\"$v\\\"\""
 567     echo "NATIVE_DEFINES+=-D$1=$v" >> config.mak
 568   fi
 569 }
 570
 571 echo "/* Automatically generated by configure - do not modify */" > $TMPH
 572
 573 print_inc CONFIG_SYSROOT "$sysroot"
 574 test "$tccdir_auto" = "yes" || print_inc CONFIG_TCCDIR "$tccdir"
 575 print_inc DWARF_VERSION "$dwarf" num
 576 print_mak CONFIG_USR_INCLUDE "$tcc_usrinclude"
 577 print_mak CONFIG_TCC_SYSINCLUDEPATHS "$tcc_sysincludepaths"
 578 print_mak CONFIG_TCC_LIBPATHS "$tcc_libpaths"
 579 print_mak CONFIG_TCC_CRTPREFIX "$tcc_crtprefix"
 580 print_mak CONFIG_TCC_ELFINTERP "$tcc_elfinterp"
 581 print_mak CONFIG_TCC_SWITCHES "$tcc_switches"
 582 print_mak CONFIG_LDDIR "$tcc_lddir"
 583 print_mak CONFIG_TRIPLET "$triplet"
 584 print_mak TCC_CPU_VERSION "$cpuver" num
 585
 586 echo "ARCH=$cpu" >> config.mak
 587 echo "TARGETOS=$targetos" >> config.mak
 588 echo "BUILDOS=$buildos" >> config.mak
 589
 590 predefs="1"
 591 for v in $confvars ; do
 592   test "$v" = "predefs=no" && predefs=""
 593   if test "${v%=*}" = "$v"; then
 594     echo "CONFIG_$v=yes" >> config.mak
 595   else
 596     echo "CONFIG_$v" >> config.mak
 597   fi
 598 done
 599 print_inc CONFIG_TCC_PREDEFS "$predefs" num
 600
 601 version=`head $source_path/VERSION`
 602 echo "VERSION = $version" >> config.mak
 603 echo "#define TCC_VERSION \"$version\"" >> $TMPH
 604 echo "@set VERSION $version" > config.texi
 605
 606 if test "$targetos" = "Darwin"; then
 607   # On macOS, -current_version and -compatibility_version must not contain letters.
 608   macos_dylib_version=`echo $version | sed 's/[^0-9.]//g'`
 609   echo "MACOS_DYLIB_VERSION = $macos_dylib_version" >> config.mak
 610 fi
 611
 612 if test "$source_path_used" = "yes" ; then
 613     case $source_path in
 614        /*) echo "TOPSRC=$source_path";;
 615         *) echo "TOPSRC=\$(TOP)/$source_path";;
 616      esac >>config.mak
 617 else
 618      echo 'TOPSRC=$(TOP)' >>config.mak
 619 fi
 620 cat >>$TMPH <<EOF
 621 #define GCC_MAJOR $gcc_major
 622 #define GCC_MINOR $gcc_minor
 623 #define CC_NAME CC_${cc_name}
 624 EOF
 625
 626 diff $TMPH config.h >/dev/null 2>&1
 627 if test $? -ne 0 ; then
 628     mv -f $TMPH config.h
 629 else
 630     echo "config.h is unchanged"
 631 fi
 632
 633 rm -f $TMPN* $CONFTEST
 634
 635 # ---------------------------------------------------------------------------
 636 # build tree in object directory if source path is different from current one
 637
 638 fn_makelink()
 639 {
 640     tgt=$1/$2
 641     case $2 in
 642     */*) dn=${2%/*}
 643          test -d $dn || mkdir -p $dn
 644          case $1 in
 645          /*) ;;
 646           *) while test $dn ; do
 647                 tgt=../$tgt; dn=${dn#${dn%%/*}}; dn=${dn#/}
 648              done
 649              ;;
 650          esac
 651          ;;
 652     esac
 653
 654     ln -sfn $tgt $2 || ( echo "ln failed. Using cp instead."; cp -f $1/$2 $2 )
 655 }
 656
 657 if test "$source_path_used" = "yes" ; then
 658   FILES="Makefile lib/Makefile tests/Makefile tests/tests2/Makefile tests/pp/Makefile"
 659   for f in $FILES ; do
 660     fn_makelink $source_path $f
 661   done
 662 fi
 663
 664 # ---------------------------------------------------------------------------