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#!/bin/sh
#
# tcc configure script (c) 2003 Fabrice Bellard

# set temporary file name
# if test ! -z "$TMPDIR" ; then
#     TMPDIR1="${TMPDIR}"
# elif test ! -z "$TEMPDIR" ; then
#     TMPDIR1="${TEMPDIR}"
# else
#     TMPDIR1="/tmp"
# fi
#
# bashism: TMPN="${TMPDIR1}/tcc-conf-${RANDOM}-$$-${RANDOM}.c"

TMPN="./conftest-$$"
TMPH=$TMPN.h

# default parameters
build_cross="no"
use_libgcc="no"
#disable_exsymtab="no"
prefix=""
execprefix=""
bindir=""
libdir=""
tccdir=""
includedir=""
mandir=""
infodir=""
sysroot=""
cross_prefix=""
cc="gcc"
ar="ar"
strip="strip"
cygwin="no"
gprof="no"
bigendian="no"
mingw32="no"
LIBSUF=".a"
EXESUF=""
tcc_sysincludepaths=""
tcc_libpaths=""
tcc_crtprefix=""
tcc_elfinterp=""
triplet=
tcc_lddir=
confvars=
cpu=

# OS specific
targetos=`uname`
case $targetos in
  MINGW*)    mingw32=yes;;
  MSYS*)     mingw32=yes;;
  DragonFly) noldl=yes;;
  OpenBSD)   noldl=yes;;
  FreeBSD)   noldl=yes;;
  NetBSD)    noldl=yes;;
  *) ;;
esac

# find source path
# XXX: we assume an absolute path is given when launching configure, 
# except in './configure' case.
source_path=${0%configure}
source_path=${source_path%/}
source_path_used="yes"
if test -z "$source_path" -o "$source_path" = "." ; then
    source_path=`pwd`
    source_path_used="no"
fi

for opt do
  eval opt=\"$opt\"
  case "$opt" in
  --prefix=*) prefix=`echo $opt | cut -d '=' -f 2`
  ;;
  --exec-prefix=*) execprefix=`echo $opt | cut -d '=' -f 2`
  ;;
  --tccdir=*) tccdir=`echo $opt | cut -d '=' -f 2`
  ;;
  --bindir=*) bindir=`echo $opt | cut -d '=' -f 2`
  ;;
  --libdir=*) libdir=`echo $opt | cut -d '=' -f 2`
  ;;
  --includedir=*) includedir=`echo $opt | cut -d '=' -f 2`
  ;;
  --sharedir=*) sharedir=`echo $opt | cut -d '=' -f 2`
  ;;
  --mandir=*) mandir=`echo $opt | cut -d '=' -f 2`
  ;;
  --infodir=*) infodir=`echo $opt | cut -d '=' -f 2`
  ;;
  --docdir=*) docdir=`echo $opt | cut -d '=' -f 2`
  ;;
  --sysroot=*) sysroot=`echo $opt | cut -d '=' -f 2`
  ;;
  --source-path=*) source_path=`echo $opt | cut -d '=' -f 2`
  ;;
  --cross-prefix=*) cross_prefix=`echo $opt | cut -d '=' -f 2`
  ;;
  --cc=*) cc=`echo $opt | cut -d '=' -f 2`
  ;;
  --ar=*) ar=`echo $opt | cut -d '=' -f 2`
  ;;
  --extra-cflags=*) CFLAGS="${opt#--extra-cflags=}"
  ;;
  --extra-ldflags=*) LDFLAGS="${opt#--extra-ldflags=}"
  ;;
  --extra-libs=*) extralibs="${opt#--extra-libs=}"
  ;;
  --sysincludepaths=*) tcc_sysincludepaths=`echo $opt | cut -d '=' -f 2`
  ;;
  --libpaths=*) tcc_libpaths=`echo $opt | cut -d '=' -f 2`
  ;;
  --crtprefix=*) tcc_crtprefix=`echo $opt | cut -d '=' -f 2`
  ;;
  --elfinterp=*) tcc_elfinterp=`echo $opt | cut -d '=' -f 2`
  ;;
  --triplet=*) triplet=`echo $opt | cut -d '=' -f 2`
  ;;
  --cpu=*) cpu=`echo $opt | cut -d '=' -f 2`
  ;;
  --enable-gprof) gprof="yes"
  ;;
  --enable-mingw32) mingw32="yes" ; cross_prefix="i686-pc-mingw32-" ; cpu=x86
  ;;
  --enable-cygwin) mingw32="yes" ; cygwin="yes" ; cross_prefix="mingw32-" ; cpu=x86
  ;;
  --enable-cross) build_cross="yes"
  ;;
#  --disable-exsymtab) disable_exsymtab="yes"
#  ;;
  --disable-static) disable_static="yes"
  ;;
  --disable-rpath) disable_rpath="yes"
  ;;
  --strip-binaries) strip_binaries="yes"
  ;;
  --with-libgcc) use_libgcc="yes"
  ;;
  --with-selinux) have_selinux="yes"

src/configure  view on Meta::CPAN

case "$cpu" in
  x86|i386|i486|i586|i686|i86pc|BePC|i686-AT386)
    cpu="x86"
  ;;
  x86_64|amd64)
    cpu="x86-64"
  ;;
  arm*)
    case "$cpu" in
      arm|armv4l)
	cpuver=4
      ;;
      armv5tel|armv5tejl)
	cpuver=5
      ;;
      armv6j|armv6l)
	cpuver=6
      ;;
      armv7a|armv7l)
	cpuver=7
      ;;
    esac
    cpu="armv4l"
  ;;
  aarch64)
    cpu="aarch64"
  ;;
  alpha)
    cpu="alpha"
  ;;
  "Power Macintosh"|ppc|ppc64)
    cpu="powerpc"
  ;;
  mips)
    cpu="mips"
  ;;
  s390)
    cpu="s390"
  ;;
  *)
  cpu="unknown"
  ;;
esac

# Checking for CFLAGS
if test -z "$CFLAGS"; then
    CFLAGS="-Wall -g -O2"
fi

if test "$mingw32" = "yes" ; then
    if test x"$tccdir" = x""; then
      tccdir="tcc"
    fi
    if test -z "$prefix" ; then
      prefix="C:/Program Files/${tccdir}"
    fi
    if test -z "$sharedir" ; then
      sharedir="${prefix}"
    fi
    execprefix="$prefix"
    bindir="${prefix}"
    tccdir="${prefix}"
    libdir="${prefix}/lib"
    docdir="${sharedir}/doc"
    mandir="${sharedir}/man"
    infodir="${sharedir}/info"
    LIBSUF=".lib"
    EXESUF=".exe"
else
    if test -z "$prefix" ; then
      prefix="/usr/local"
    fi
    if test -z "$sharedir" ; then
      sharedir="${prefix}/share"
    fi
    if test x"$execprefix" = x""; then
      execprefix="${prefix}"
    fi
    if test x"$libdir" = x""; then
      libdir="${execprefix}/lib"
    fi
    if test x"$bindir" = x""; then
      bindir="${execprefix}/bin"
    fi
    if test x"$docdir" = x""; then
      docdir="${sharedir}/doc"
    fi
    if test x"$mandir" = x""; then
      mandir="${sharedir}/man"
    fi
    if test x"$infodir" = x""; then
      infodir="${sharedir}/info"
    fi
    if test x"$tccdir" = x""; then
      tccdir="${libdir}/tcc"
    fi
fi # mingw32

if test x"$includedir" = x""; then
  includedir="${prefix}/include"
fi

if test x"$show_help" = "xyes" ; then
cat << EOF
Usage: configure [options]
Options: [defaults in brackets after descriptions]

Standard options:
  --help                   print this message
  --prefix=PREFIX          install in PREFIX [$prefix]
  --exec-prefix=EPREFIX    install architecture-dependent files in EPREFIX
			   [same as prefix]
  --bindir=DIR             user executables in DIR [EPREFIX/bin]
  --libdir=DIR             object code libraries in DIR [EPREFIX/lib]
  --tccdir=DIR             installation directory [EPREFIX/lib/tcc]
  --includedir=DIR         C header files in DIR [PREFIX/include]
  --sharedir=DIR           documentation root DIR [PREFIX/share]
  --docdir=DIR             documentation in DIR [SHAREDIR/doc/tcc]
  --mandir=DIR             man documentation in DIR [SHAREDIR/man]
  --infodir=DIR            info documentation in DIR [SHAREDIR/info]

Advanced options (experts only):
  --source-path=PATH       path of source code [$source_path]
  --cross-prefix=PREFIX    use PREFIX for compile tools [$cross_prefix]
  --sysroot=PREFIX         prepend PREFIX to library/include paths []
  --cc=CC                  use C compiler CC [$cc]
  --ar=AR                  create archives using AR [$ar]
  --extra-cflags=          specify compiler flags [$CFLAGS]
  --extra-ldflags=         specify linker options []
  --cpu=CPU                CPU [$cpu]
  --strip-binaries         strip symbol tables from resulting binaries
  --disable-static         make libtcc.so instead of libtcc.a
  --disable-rpath          disable use of -rpath with the above
  --with-libgcc            use libgcc_s.so.1 instead of libtcc1.a in dynamic link
  --enable-mingw32         build windows version on linux with mingw32
  --enable-cygwin          build windows version on windows with cygwin
  --enable-cross           build cross compilers
  --with-selinux           use mmap for exec mem [needs writable /tmp]
  --sysincludepaths=...    specify system include paths, colon separated
  --libpaths=...           specify system library paths, colon separated
  --crtprefix=...          specify locations of crt?.o, colon separated
  --elfinterp=...          specify elf interpreter
  --triplet=...            specify system library/include directory triplet
EOF
#echo "NOTE: The object files are build at the place where configure is launched"
exit 1
fi

cc="${cross_prefix}${cc}"
ar="${cross_prefix}${ar}"
strip="${cross_prefix}${strip}"

CONFTEST=./conftest$EXESUF

if test -z "$cross_prefix" ; then
  if ! $cc -o $CONFTEST $source_path/conftest.c 2>/dev/null ; then
    echo "configure: error: '$cc' failed to compile conftest.c."
  else
    bigendian="$($CONFTEST bigendian)"
    gcc_major="$($CONFTEST version)"
    gcc_minor="$($CONFTEST minor)"
    if test "$mingw32" = "no" ; then

      if test -z "$triplet"; then
        tt="$($CONFTEST triplet)"
        if test -n "$tt" -a -f "/usr/lib/$tt/crti.o" ; then
          triplet="$tt"
        fi
      fi

      if test -z "$triplet"; then
        if test $cpu = "x86-64" -o $cpu = "aarch64" ; then
          if test -f "/usr/lib64/crti.o" ; then
            tcc_lddir="lib64"
          fi
        fi
      fi

      if test "$cpu" = "armv4l" ; then
	if test "${triplet%eabihf}" != "$triplet" ; then
	   confvars="$confvars arm_eabihf"
	elif test "${triplet%eabi}" != "$triplet" ; then
	   confvars="$confvars arm_eabi"
	fi
	if grep -s -q "^Features.* \(vfp\|iwmmxt\) " /proc/cpuinfo ; then
	   confvars="$confvars arm_vfp"
	fi
      fi

      if test -f "/lib/ld-uClibc.so.0" ; then
	confvars="$confvars uClibc"
      fi

    fi
  fi
else
  # if cross compiling, cannot launch a program, so make a static guess
  case $cpu in
    powerpc|mips|s390)  bigendian=yes;;
  esac
fi

# a final configuration tuning
$cc -v --help > cc_help.txt 2>&1
W_OPTIONS="declaration-after-statement"
for i in $W_OPTIONS; do
    O_PRESENT="$(grep -- -W$i cc_help.txt)"
    if test -n "$O_PRESENT"; then  CFLAGS="$CFLAGS -W$i"; fi
done
W_OPTIONS="deprecated-declarations strict-aliasing pointer-sign sign-compare unused-result uninitialized"
for i in $W_OPTIONS; do
    O_PRESENT="$(grep -- -W$i cc_help.txt)"
    if test -n "$O_PRESENT"; then  CFLAGS="$CFLAGS -Wno-$i"; fi
done
F_OPTIONS="strict-aliasing"
for i in $F_OPTIONS; do
    O_PRESENT="$(grep -- -f$i cc_help.txt)"
    if test -n "$O_PRESENT"; then  CFLAGS="$CFLAGS -fno-$i"; fi
done
rm -f cc_help.txt

fcho() { if test -n "$2"; then echo "$1$2"; else echo "$1-"; fi }

echo "Binary  directory   $bindir"
echo "TinyCC directory    $tccdir"
echo "Library directory   $libdir"
echo "Include directory   $includedir"
echo "Manual directory    $mandir"
echo "Info directory      $infodir"
echo "Doc directory       $docdir"
fcho "Target root prefix  " "$sysroot"
echo "Source path         $source_path"
echo "C compiler          $cc"
echo "Target OS           $targetos"
echo "CPU                 $cpu"
echo "Big Endian          $bigendian"
echo "Profiling           $gprof"
echo "Cross compilers     $build_cross"
echo "Use libgcc          $use_libgcc"
fcho "Triplet             " "$triplet"
#if test "$disable_exsymtab" = "no" ; then
echo "tcc with exsymtab"
#fi

echo "Creating config.mak and config.h"

cat >config.mak <<EOF
# Automatically generated by configure - do not modify
prefix=$prefix
bindir=\$(DESTDIR)$bindir
tccdir=\$(DESTDIR)$tccdir
libdir=\$(DESTDIR)$libdir
includedir=\$(DESTDIR)$includedir
mandir=\$(DESTDIR)$mandir
infodir=\$(DESTDIR)$infodir
docdir=\$(DESTDIR)$docdir
CC=$cc
GCC_MAJOR=$gcc_major
GCC_MINOR=$gcc_minor
AR=$ar
STRIP=$strip -s -R .comment -R .note
CFLAGS=$CFLAGS
LDFLAGS=$LDFLAGS
LIBSUF=$LIBSUF
EXESUF=$EXESUF
EOF

print_inc() {
  if test -n "$2"; then
    echo "#ifndef $1" >> $TMPH
    echo "# define $1 \"$2\"" >> $TMPH
    echo "#endif" >> $TMPH
  fi
}
print_mak() {
  if test -n "$2"; then
    echo "NATIVE_DEFINES+=-D$1=\"\\\"$2\\\"\"" >> config.mak
  fi
}

echo "/* Automatically generated by configure - do not modify */" > $TMPH

print_inc CONFIG_SYSROOT "$sysroot"
print_inc CONFIG_TCCDIR "$tccdir"
print_mak CONFIG_TCC_SYSINCLUDEPATHS "$tcc_sysincludepaths"
print_mak CONFIG_TCC_LIBPATHS "$tcc_libpaths"
print_mak CONFIG_TCC_CRTPREFIX "$tcc_crtprefix"
print_mak CONFIG_TCC_ELFINTERP "$tcc_elfinterp"
print_mak CONFIG_LDDIR "$tcc_lddir"
print_mak CONFIG_TRIPLET "$triplet"

echo "#define GCC_MAJOR $gcc_major" >> $TMPH
echo "#define GCC_MINOR $gcc_minor" >> $TMPH

if test "$cpu" = "x86" ; then
  echo "ARCH=i386" >> config.mak
elif test "$cpu" = "x86-64" ; then
  echo "ARCH=x86-64" >> config.mak
elif test "$cpu" = "armv4l" ; then
  echo "ARCH=arm" >> config.mak
  echo "#define TCC_ARM_VERSION $cpuver" >> $TMPH
elif test "$cpu" = "aarch64" ; then
  echo "ARCH=arm64" >> config.mak
elif test "$cpu" = "powerpc" ; then
  echo "ARCH=ppc" >> config.mak
elif test "$cpu" = "mips" ; then
  echo "ARCH=mips" >> config.mak
elif test "$cpu" = "s390" ; then
  echo "ARCH=s390" >> config.mak
elif test "$cpu" = "alpha" ; then