Differential D34411 Diff 103491 contrib/mg/configure

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				#!/bin/sh

				# This configure script written by Brian Callahan <bcallah@openbsd.org>
				# and released into the Public Domain.

				cccheck() {
				if [ ! -z "$CC" ] ; then
				cat << EOF > conftest.c
				int main(void){return 0;}
				EOF
				$CC -o conftest conftest.c > /dev/null 2>&1
				if [ $? -eq 0 ] ; then
				./conftest
				if [ $? -eq 0 ] ; then
				rm -f conftest conftest.c
				cc="$CC"
				return 0
				else
				echo "could not build working executables"
				echo "Please ensure your C compiler is a native compiler"
				exit 1
				fi
				else
				rm -f conftest conftest.c
				fi
				fi

				for compiler in cc clang pcc xlc gcc ; do
				cat << EOF > conftest.c
				int main(void){return 0;}
				EOF

				$compiler -o conftest conftest.c > /dev/null 2>&1

				if [ $? -eq 0 ] ; then
				./conftest
				if [ $? -eq 0 ] ; then
				rm -f conftest conftest.c
				cc="$compiler"
				return 0
				else
				echo "could not build working executables"
				echo "Please ensure your C compiler is a native compiler"
				exit 1
				fi
				else
				rm -f conftest conftest.c
				fi
				done
				return 1
				}

				defaultcflagscheck() {
				cat << EOF > conftest.c
				int main(void){return 0;}
				EOF
				$cc $cflags -g -O2 -o conftest.o -c conftest.c > /dev/null 2>&1
				if [ $? -eq 0 ] ; then
				rm -f conftest conftest.o conftest.c
				return 1
				else
				rm -f conftest conftest.o conftest.c
				return 0
				fi
				}

				fparselncheck() {
				cat << EOF > conftest.c
				#include <stdio.h>
				#if defined(__APPLE__)
				#include "apple.h"
				#elif defined(__linux__)
				#include "util.h"
				#elif defined(__FreeBSD__)
				#include <libutil.h>
				#else
				#include <util.h>
				#endif
				int main(void){fparseln(NULL,NULL,NULL,NULL,0);return 0;}
				EOF
				$cc $tflags -o conftest conftest.c $libs > /dev/null 2>&1
				if [ $? -eq 0 ] ; then
				rm -f conftest conftest.c
				return 0
				else
				rm -f conftest conftest.c
				return 1
				fi
				}

				fstatatcheck() {
				cat << EOF > conftest.c
				#undef _POSIX_C_SOURCE
				#define _POSIX_C_SOURCE 200809L
				#include <sys/stat.h>
				#include <fcntl.h>
				#include <stdio.h>
				int main(void){fstatat(0, NULL, NULL, 0);return 0;}
				EOF
				$cc $tflags -o conftest conftest.c > /dev/null 2>&1
				if [ $? -eq 0 ] ; then
				rm -f conftest conftest.c
				return 0
				else
				rm -f conftest conftest.c
				return 1
				fi
				}

				futimenscheck() {
				cat << EOF > conftest.c
				#include <sys/stat.h>
				#include <fcntl.h>
				#include <stdio.h>
				int main(void){futimens(0, NULL);return 0;}
				EOF
				$cc $tflags -o conftest conftest.c > /dev/null 2>&1
				if [ $? -eq 0 ] ; then
				rm -f conftest conftest.c
				return 0
				else
				rm -f conftest conftest.c
				return 1
				fi
				}

				getlinecheck() {
				cat << EOF > conftest.c
				#include <stdio.h>
				int main(void){getline(NULL,NULL,NULL);return 0;}
				EOF
				$cc $tflags -o conftest conftest.c > /dev/null 2>&1
				if [ $? -eq 0 ] ; then
				rm -f conftest conftest.c
				return 0
				else
				rm -f conftest conftest.c
				return 1
				fi
				}

				pledgecheck() {
				cat << EOF > conftest.c
				#include <unistd.h>
				int main(void){pledge(NULL,NULL);return 0;}
				EOF
				$cc $tflags -o conftest conftest.c > /dev/null 2>&1
				if [ $? -eq 0 ] ; then
				rm -f conftest conftest.c
				return 0
				else
				rm -f conftest conftest.c
				return 1
				fi
				}

				reallocarraycheck() {
				cat << EOF > conftest.c
				#include <stdlib.h>
				int main(void){reallocarray(NULL, 0, 0);return 0;}
				EOF
				$cc $tflags -o conftest conftest.c > /dev/null 2>&1
				if [ $? -eq 0 ] ; then
				rm -f conftest conftest.c
				return 0
				else
				rm -f conftest conftest.c
				return 1
				fi
				}

				strlcatcheck() {
				cat << EOF > conftest.c
				#include <string.h>
				int main(void){strlcat(NULL,NULL,0);return 0;}
				EOF
				$cc $tflags -o conftest conftest.c > /dev/null 2>&1
				if [ $? -eq 0 ] ; then
				rm -f conftest conftest.c
				return 0
				else
				rm -f conftest conftest.c
				return 1
				fi
				}

				strlcpycheck() {
				cat << EOF > conftest.c
				#include <string.h>
				int main(void){strlcpy(NULL,NULL,0);return 0;}
				EOF
				$cc $tflags -o conftest conftest.c > /dev/null 2>&1
				if [ $? -eq 0 ] ; then
				rm -f conftest conftest.c
				return 0
				else
				rm -f conftest conftest.c
				return 1
				fi
				}

				strndupcheck() {
				cat << EOF > conftest.c
				#include <string.h>
				int main(void){strndup(NULL,0);return 0;}
				EOF
				$cc $tflags -o conftest conftest.c > /dev/null 2>&1
				if [ $? -eq 0 ] ; then
				rm -f conftest conftest.c
				return 0
				else
				rm -f conftest conftest.c
				return 1
				fi
				}

				strtonumcheck() {
				cat << EOF > conftest.c
				#include <stdlib.h>
				int main(void){strtonum(NULL, 0, 0, NULL);return 0;}
				EOF
				$cc $tflags -o conftest conftest.c > /dev/null 2>&1
				if [ $? -eq 0 ] ; then
				rm -f conftest conftest.c
				return 0
				else
				rm -f conftest conftest.c
				return 1
				fi
				}

				wflagcheck() {
				cat << EOF > conftest.c
				int main(void){return 0;}
				EOF
				$cc $cflags -w -o conftest conftest.c > /dev/null 2>&1
				if [ $? -eq 0 ] ; then
				rm -f conftest conftest.o conftest.c
				return 1
				else
				rm -f conftest conftest.o conftest.c
				return 0
				fi
				}

				# Option variables
				if [ ! -z "$PREFIX" ] ; then
				prefix="$PREFIX"
				else
				prefix="/usr/local"
				fi

				mandir="$prefix/man"

				prog="mg"
				log=0
				static=0
				terminfo=0

				# Options
				for opt
				do
				case "$opt" in
				--prefix=*)
				prefix=`echo $opt \| cut -d '=' -f 2`
				;;
				--mandir=*)
				mandir=`echo $opt \| cut -d '=' -f 2`
				;;
				--disable-logging\|--enable-logging)
				if [ "x$opt" = "x--enable-logging" ] ; then
				log=1
				else
				log=0
				fi
				;;
				--disable-static\|--enable-static)
				if [ "x$opt" = "x--enable-static" ] ; then
				static=1
				else
				static=0
				fi
				;;
				--with-builtin-curses\|--without-builtin-curses)
				if [ "x$opt" = "x--with-builtin-curses" ] ; then
				terminfo=1
				else
				terminfo=0
				fi
				;;
				--help\|-h)
				echo "Usage: configure [options]"
				echo ""
				echo "Options:"
				printf " --help or -h "
				echo "Display this help message"
				printf " --prefix=PREFIX "
				echo "Top level install directory is PREFIX [$prefix]"
				printf " --mandir=MANDIR "
				echo "Manual pages are installed to MANDIR [$mandir]"
				printf " --enable-logging "
				echo "Enable run-time debugging [default=no]"
				printf " --enable-static "
				echo "Statically link executables [default=no]"
				printf " --with-builtin-curses "
				echo "Compile with builtin curses library [default=no]"
				exit 1
				;;
				*)
				;;
				esac
				done

				if [ ! -z "$CFLAGS" ] ; then
				cflags="$CFLAGS -DREGEX"
				else
				cflags="-DREGEX"
				fi

				if [ ! -z "$LDFLAGS" ] ; then
				ldflags="$LDFLAGS "
				else
				ldflags=""
				fi

				if [ $static -ne 0 ] ; then
				ldflags="${ldflags}-static"
				fi

				printf "checking for C compiler... "
				cccheck
				if [ $? -ne 0 ] ; then
				echo "not found"
				echo "Please install a C compiler and re-run configure."
				exit 1
				else
				echo "$cc"
				fi

				if [ "x$cflags" = "x-DREGEX" ] ; then
				printf "checking if the compiler accepts -g -O2... "
				defaultcflagscheck
				if [ $? -eq 0 ] ; then
				echo "no"
				else
				cflags="-g -O2 $cflags"
				echo "yes"
				fi
				fi

				printf "checking for -w compiler flag... "
				wflagcheck
				if [ $? -eq 0 ] ; then
				echo "no"
				else
				cflags="$cflags -w"
				echo "yes"
				fi

				printf "checking for OS... "

				if [ $terminfo -eq 0 ] ; then
				libs="-lncursesw"
				else
				libs=""
				fi

				os=`uname -s`
				echo "$os"

				case "x$os" in
				"xLinux"\|"xCYGWIN"*)
				cflags="$cflags -D_GNU_SOURCE -D__dead=\"__attribute__((__noreturn__))\" -Dst_mtimespec=st_mtim"
				libs="$libs -lutil"
				;;
				"xDarwin")
				cflags="$cflags -DMSG_NOSIGNAL=SO_NOSIGPIPE -DLOGIN_NAME_MAX=MAXLOGNAME"
				if [ $terminfo -eq 0 ] ; then
				libs="-lncurses -lutil"
				else
				libs="-lutil"
				fi
				;;
				"xFreeBSD")
				cflags="$cflags -D__dead=__dead2 -DLOGIN_NAME_MAX=MAXLOGNAME"
				libs="$libs -lutil"
				;;
				"xOpenBSD")
				libs="$libs -lutil"
				;;
				"xNetBSD")
				cflags="$cflags -D_OPENBSD_SOURCE"
				if [ $terminfo -eq 0 ] ; then
				libs="-lcurses -lutil"
				else
				libs="-lutil"
				fi
				;;
				"xDragonFly")
				cflags="$cflags -D__dead=__dead2 -DLOGIN_NAME_MAX=MAXLOGNAME"
				libs="$libs -lutil"
				;;
				esac

				cat << EOF > config.h
				/* This file generated automatically by configure. */

				#include "common.h"
				#if defined(__linux__) \|\| defined(__CYGWIN__)
				#include "linux.h"
				#elif defined(__APPLE__)
				#include "apple.h"
				#elif defined(__FreeBSD__)
				#include "freebsd.h"
				#elif defined(__NetBSD__)
				#include "netbsd.h"
				#elif defined(__DragonFly__)
				#include "dragonfly.h"
				#endif

				EOF

				printf "checking for fparseln... "
				fparselncheck
				if [ $? -eq 0 ] ; then
				echo "#define HAVE_FPARSELN" >> config.h
				echo "yes"
				else
				echo "extern char fparseln(FILE , size_t , size_t , const char[3], int);" >> config.h
				echo "no"
				fi

				printf "checking for fstatat... "
				fstatatcheck
				if [ $? -eq 0 ] ; then
				echo "#define HAVE_FSTATAT" >> config.h
				echo "yes"
				else
				echo "extern int fstatat(int, const char , struct stat , int);" >> config.h
				echo "no"
				fi

				printf "checking for futimens... "
				futimenscheck
				if [ $? -eq 0 ] ; then
				echo "#define HAVE_FUTIMENS" >> config.h
				echo "yes"
				else
				echo "extern int futimens(int, const struct timespec[2]);" >> config.h
				echo "no"
				fi

				printf "checking for getline... "
				getlinecheck
				if [ $? -eq 0 ] ; then
				echo "#define HAVE_GETLINE" >> config.h
				echo "yes"
				else
				echo "extern ssize_t getline(char *, size_t , FILE *);" >> config.h
				echo "no"
				fi

				printf "checking for pledge... "
				pledgecheck
				if [ $? -eq 0 ] ; then
				echo "#define HAVE_PLEDGE" >> config.h
				echo "yes"
				else
				echo "no"
				fi

				printf "checking for reallocarray... "
				reallocarraycheck
				if [ $? -eq 0 ] ; then
				echo "#define HAVE_REALLOCARRAY" >> config.h
				echo "yes"
				else
				echo "extern void reallocarray(void , size_t, size_t);" >> config.h
				echo "no"
				fi

				printf "checking for strlcat... "
				strlcatcheck
				if [ $? -eq 0 ] ; then
				echo "#define HAVE_STRLCAT" >> config.h
				echo "yes"
				else
				echo "extern size_t strlcat(char , const char , size_t);" >> config.h
				echo "no"
				fi

				printf "checking for strlcpy... "
				strlcpycheck
				if [ $? -eq 0 ] ; then
				echo "#define HAVE_STRLCPY" >> config.h
				echo "yes"
				else
				echo "extern size_t strlcpy(char , const char , size_t);" >> config.h
				echo "no"
				fi

				printf "checking for strndup... "
				strndupcheck
				if [ $? -eq 0 ] ; then
				echo "#define HAVE_STRNDUP" >> config.h
				echo "yes"
				else
				echo "extern char strndup(const char , size_t);" >> config.h
				echo "no"
				fi

				printf "checking for strtonum... "
				strtonumcheck
				if [ $? -eq 0 ] ; then
				echo "#define HAVE_STRTONUM" >> config.h
				echo "yes"
				else
				echo "extern long long strtonum(const char , long long, long long, const char *);" >> config.h
				echo "no"
				fi

				printf "creating Makefile... "
				cat << EOF > Makefile
				# This Makefile automatically generated by configure.
				.POSIX:

				CC = $cc
				CFLAGS = $cflags
				EOF

				if [ ! -z "$ldflags" ] ; then
				cat << EOF >> Makefile
				LDFLAGS = $ldflags
				EOF
				fi

				cat << EOF >> Makefile
				PREFIX = $prefix
				MANDIR = $mandir

				PROG = $prog
				OBJS = autoexec.o basic.o bell.o buffer.o cinfo.o dir.o display.o \\
				echo.o extend.o file.o fileio.o funmap.o help.o kbd.o keymap.o \\
				line.o macro.o main.o match.o modes.o paragraph.o re_search.o \\
				region.o search.o spawn.o tty.o ttyio.o ttykbd.o undo.o util.o \\
				version.o window.o word.o yank.o cmode.o cscope.o dired.o \\
				grep.o tags.o fparseln.o fstatat.o futimens.o getline.o \\
				reallocarray.o strlcat.o strlcpy.o strndup.o strtonum.o \\
				interpreter.o extensions.o

				EOF

				if [ $terminfo -ne 0 ] ; then
				cat << EOF >> Makefile
				OBJS += term.o ti.o setupterm.o curterm.o tparm.o tputs.o \\
				compile.o hash.o termcap.o mi_vector_hash.o cdbr.o

				EOF
				sed -i.bak 's,<term.h>,"terminfo_term.h",g' display.c echo.c spawn.c tty.c \
				ttyio.c ttykbd.c
				else
				sed -i.bak 's,"terminfo_term.h",<term.h>,g' display.c echo.c spawn.c tty.c \
				ttyio.c ttykbd.c
				fi

				if [ $log -ne 0 ] ; then
				cat << EOF >> Makefile
				OBJS += log.o

				EOF
				fi

				cat << EOF >> Makefile
				all: \${PROG}

				\${PROG}: \${OBJS}
				\${CC} \${LDFLAGS} -o \${PROG} \${OBJS} $libs

				install:
				install -d \${DESTDIR}\${PREFIX}/bin
				install -d \${DESTDIR}\${MANDIR}/man1
				install -c -s -m 755 \${PROG} \${DESTDIR}\${PREFIX}/bin
				install -c -m 644 mg.1 \${DESTDIR}\${MANDIR}/man1/\${PROG}.1

				test:
				echo "No tests"

				clean:
				rm -f \${PROG} \${OBJS}

				distclean: clean
				rm -f Makefile config.h *.bak
				EOF
				echo "done"