1 files changed, 138 insertions, 0 deletions
diff --git a/configure b/configure
new file mode 100755
index 0000000..86a4e0b
--- /dev/null
+++ b/configure
@@ -0,0 +1,138 @@
+#!/bin/sh -e
+
+die() {
+    printf '%s: %s\n' "${0##*/}" "$*" >&2
+    exit 1
+}
+
+out() { printf '%s\n' "$@" ;}
+
+usage() {
+    out "usage: $0 [options]" \
+        "Options:" \
+        "  --prefix=dir         Set prefix directory" \
+        "  --bindir=dir         Set directory where executables will be installed" \
+        "  --manprefix=dir      Set directory where manual pages will be installed" \
+        "  --with-netcat=opt    Whether to build netcat [yes,no,auto](default: auto)" \
+        "  --with-less-t=opt    Whether to build mandoc with 'less -T' tagfile support" \
+        "                                                 [yes,no,auto](default: auto)" \
+        "  --with-fts=opt       One of glibc, musl-fts, none, auto (default: auto)" \
+        "  --with-system-zlib   Use system zlib"
+    exit 1
+}
+
+prefix=/usr/local
+# We don't want expansion
+# shellcheck disable=2016
+{
+    bindir='$(PREFIX)/bin'
+    manprefix='${PREFIX}/share/man'
+}
+fts=auto
+netcat=auto
+lesst=auto
+host=
+
+for arg; do
+    case $arg in
+        --help) usage ;;
+        --prefix=*) prefix=${arg#*=} ;;
+        --bindir=*) bindir=${arg#*=} ;;
+        --manprefix=*) manprefix=${arg#*=} ;;
+        --with-fts=*) fts=${arg#*=}  ;;
+        --with-system-zlib) zlib=1   ;;
+        --with-less-t) lesst=yes     ;;
+        --without-less-t) lesst=no   ;;
+        --with-less-t=*) lesst=${arg#*=} ;;
+        --with-netcat) netcat=yes    ;;
+        --without-netcat) netcat=no  ;;
+        --with-netcat=*) netcat=${arg#*=} ;;
+        -*) die "Unknown flag: '$arg'" ;;
+        *=*) export "${arg:?}";;
+        *) die "Unknown option: '$arg'"
+    esac
+done
+
+trap 'rm -f config.mk' EXIT
+trap 'rm -f config.mk; exit 1' INT
+
+: "${CC:=cc}" "${PKG_CONFIG:=pkg-config}"
+
+printf 'checking system type... '
+[ "$host" ] || host=$($CC -dumpmachine 2>/dev/null) || die "Could not determine host"
+out "$host"
+
+case $host in
+    *linux*) ;;
+    *) die "Unsupported system: $host"
+esac
+
+cat <<EOF >config.mk
+PREFIX    = $prefix
+BINDIR    = $bindir
+MANPREFIX = $manprefix
+
+AR     = ${AR:-ar}
+CC     = ${CC:-cc}
+RANLIB = ${RANLIB:-ranlib}
+RM     = rm -f
+YACC   = ${YACC:-yacc}
+
+EOF
+
+case $netcat in
+    auto|yes)
+        printf 'checking for libtls... '
+        if tlslib=$("$PKG_CONFIG" --static --libs libtls 2>/dev/null); then
+            out "$tlslib"
+            out "TLSLIB = $tlslib" "BIN += nc" >>config.mk
+            out "MAN += usr.bin/nc/nc.1" >>config.mk
+        else
+            out "none"
+            [ "$netcat" = yes ] && die "No tls library found"
+        fi
+esac
+
+printf 'checking for zlib... '
+if [ "$zlib" = 1 ]; then
+    zlib=$($PKG_CONFIG --static --libs zlib)
+    out "$zlib"
+    out "ZLIB = $zlib" >> config.mk
+else
+    zlib=lib/libz/libz.a
+    out "in source"
+    out "ZLIB = $zlib" "MANDOCLIBS += $zlib" "GREPLIBS += $zlib" >>config.mk
+fi
+
+printf 'checking for fts... '
+if [ "$fts" = auto ]; then
+    if out "#include <fts.h>" | $CC -E - >/dev/null 2>&1; then
+        fts=glibc
+        $PKG_CONFIG --exists musl-fts && fts=musl-fts
+    else
+        fts=none
+    fi
+fi
+
+out "$fts"
+
+case $fts in
+    glibc) out "CFLAGS += -DHAVE_FTS" ;;
+    musl-fts) out "CFLAGS += -DHAVE_FTS" "LIBFTS = -lfts" ;;
+    none) out "LIBOBJ += lib/libc/gen/fts.o"
+esac >>config.mk
+
+case $lesst in
+    auto|yes)
+        printf "Checking if less supports '-T'... "
+        if echo | less -T test >/dev/null 2>&1; then
+            out yes
+            out "CFLAGS += -DHAVE_LESS_T" >>config.mk
+        else
+            out no
+            [ "$lesst" = yes ] && die "less doesn't support '-T' flag"
+        fi
+esac
+
+out "written config.mk" "Run 'make' to compile otools"
+trap - EXIT INT