configure.plain

   1 #!/bin/sh
   2 #
   3 #  Guess values for system-dependent variables and create Makefiles.
   4 #
   5 #  Copyright (C) 2017-2020 Zhang Maiyun
   6 #
   7 #  This file is part of the slib.
   8 #  The slib is free software; you can redistribute it and/or modify
   9 #  it under the terms of the GNU Lesser General Public License as published by
  10 #  the Free Software Foundation; either version 3 of the License, or
  11 #  (at your option) any later version.
  12 #
  13 #  This program is distributed in the hope that it will be useful,
  14 #  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 #  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 #  GNU Lesser General Public License for more details.
  17 #
  18 #  You should have received a copy of the GNU Lesser General Public License
  19 #  along with this program.  If not, see <https://www.gnu.org/licenses/>.
  20 #
  21
  22 srcdir="$(dirname "$0")"
  23 export CONFIGROOT="$srcdir/cmake"
  24 # shellcheck source=cmake/acconf.sh
  25 . "$srcdir/cmake/acconf.sh"
  26
  27 # Kept for no reason
  28 # Plus which, cc, ar and sh, these are minimal requirement to build this project
  29 check_progs cat mkdir cut sed expr find tr grep uname install ln make
  30
  31 # Default/init value of variables
  32 prefix="/usr/local"
  33 bindir=""
  34 libdir=""
  35 includedir=""
  36
  37 cross=""
  38 cc="${CC}"
  39 ar="${AR}"
  40 rm="rm"
  41
  42 # shellcheck disable=SC2153 # CFLAGS is external
  43 cflags="${CFLAGS} ${CPPFLAGS} -Wall -Wextra -pedantic -O2 -DHAVE_CONFIG_H -I${srcdir}/include -I."
  44 # shellcheck disable=SC2153 # LDFLAGS is external
  45 ldflags="-lm ${LDFLAGS}"
  46 soflags=""
  47
  48 cfiles="$(
  49     cd "${srcdir}" || exit 1
  50     find src -name '*.c' -type f | tr '\n' ' '
  51 )"
  52 hfiles="$(find "${srcdir}/include" -name '*.h' -type f | tr '\n' ' ')"
  53
  54 exesuf=""
  55 sosuf=""
  56
  57 disable_abort=""
  58 enable_dmalloc=""
  59
  60 # Get constants defined in CMakeLists.txt
  61 name="libsbl"
  62 ver_major="$(grep SBLLIB_VERSION "${srcdir}/include/slib/general.h" | cut -f3 -d\ )"
  63 ver_minor="$(grep SBLLIB_MINOR "${srcdir}/include/slib/general.h" | cut -f3 -d\ )"
  64 ver_pl="$(grep SBLLIB_PATCHLEVEL "${srcdir}/include/slib/general.h" | cut -f3 -d\ )"
  65 version="${ver_major}.${ver_minor}.${ver_pl}"
  66 description="$(grep PROJECT_DESCRIPTION "${srcdir}/CMakeLists.txt" | cut -d\" -f2)"
  67
  68 # Help
  69 help_me()
  70 {
  71     cat <<EON
  72 Usage: ${srcdir}/configure [option=<value> | --help]
  73
  74 Options:
  75   --prefix=PREFIX            set prefix [/usr/local]
  76   --build=BUILD              configure for building on BUILD [guessed]
  77   --host=HOST                cross-compile to build programs to run on HOST [BUILD]
  78   --target=TARGET            unused
  79   --rm=RM                    file unlinking program(Should support \`-f') [rm]
  80   --sosuffix=EXT_WITH_A_DOT  set extension of shared objects
  81   --exesuffix=EXT_WITH_A_DOT set extension of executables
  82   --soflags=SOFLAGS          set CFLAGS for shared objects
  83   --*dir=DIR                 set bindir, libdir, includedir, mandir, infodir
  84   --help,-h                  display this help information
  85
  86 Optional Features:
  87   --disable-abort            disable abort on memory failure [enabled]
  88   --enable-dmalloc           enable dmalloc for debug [disabled]
  89
  90 Some influential environment variables:
  91   AR                         libmaker
  92   CC                         C compiler
  93   CFLAGS                     C flags
  94   LDFLAGS                    LD flags
  95
  96 Project maintained by Zhang Maiyun <me@maiyun.me>.
  97 EON
  98     exit 0
  99 }
 100
 101 # Parse arguments
 102 for opt
 103 do
 104     eval opt=\""${opt}"\"
 105     case "${opt}" in
 106         --prefix=*)
 107             prefix=$(echo "${opt}" | cut -d '=' -f 2)
 108             ;;
 109         --host=*)
 110             cross=$(echo "${opt}" | cut -d '=' -f 2)
 111             ;;
 112         --build=* | --target=*) ;;
 113
 114         --rm=*)
 115             rm=$(echo "${opt}" | cut -d '=' -f 2)
 116             ;;
 117         --sosuffix=*)
 118             sosuf=$(echo "${opt}" | cut -d '=' -f 2)
 119             ;;
 120         --exesuffix=*)
 121             exesuf=$(echo "${opt}" | cut -d '=' -f 2)
 122             ;;
 123         --bindir=*)
 124             bindir=$(echo "${opt}" | cut -d '=' -f 2)
 125             ;;
 126         --libdir=*)
 127             libdir=$(echo "${opt}" | cut -d '=' -f 2)
 128             ;;
 129         --includedir=*)
 130             includedir=$(echo "${opt}" | cut -d '=' -f 2)
 131             ;;
 132         --soflags=*)
 133             soflags="${soflags} $(echo "${opt}" | cut -d '=' -f 2)"
 134             ;;
 135         --disable-abort)
 136             disable_abort=on
 137             ;;
 138         --enable-abort)
 139             disable_abort=""
 140             ;;
 141         --disable-dmalloc)
 142             enable_dmalloc=""
 143             ;;
 144         --enable-dmalloc)
 145             enable_dmalloc=on
 146             ;;
 147         --help | -h)
 148             help_me
 149             ;;
 150         *)
 151             echo configure: Warning: unrecognized option "${opt}"
 152             ;;
 153     esac
 154 done
 155
 156 if [ "$enable_dmalloc" = "on" ]
 157 then
 158     ldflags="${ldflags} -ldmalloc"
 159 fi
 160
 161 echo "Starting configuration for host $(get_proper_triplet "$cross")"
 162
 163 # Check for C compiler
 164 if [ "$cc" = "" ]
 165 then
 166     check_cc "$cross"
 167 fi
 168
 169 # exesuf also determined here
 170 check_cc_works
 171
 172 # Check for ar
 173 if [ "$ar" = "" ]
 174 then
 175     check_ar "$cross"
 176 fi
 177
 178 # For sosuf
 179 check_shared_works "$cross" "$version"
 180 if [ "$append_version" = "true" ]
 181 then
 182     if [ "$sosuf" = ".so" ]
 183     then
 184         acsosuf=${sosuf}.${ver_major}
 185     else
 186         acsosuf=.${ver_major}${sosuf}
 187     fi
 188 fi
 189
 190 if check_header "alloca.h"
 191 then
 192     alloca_h=1
 193 else
 194     alloca_h=0
 195 fi
 196
 197 if check_header "fcntl.h"
 198 then
 199     fcntl_h=1
 200 else
 201     fcntl_h=0
 202 fi
 203
 204 if check_header "stdbool.h"
 205 then
 206     stdbool_h=1
 207 else
 208     stdbool_h=0
 209 fi
 210
 211 if check_header "stdint.h"
 212 then
 213     stdint_h=1
 214 else
 215     stdint_h=0
 216 fi
 217
 218 if check_header "termios.h"
 219 then
 220     termios_h=1
 221 else
 222     termios_h=0
 223 fi
 224
 225 if check_header "unistd.h"
 226 then
 227     unistd_h=1
 228 else
 229     unistd_h=0
 230 fi
 231
 232 if check_type "size_t"
 233 then
 234     size_t=0
 235 else
 236     size_t=1
 237 fi
 238
 239 if check_type "intptr_t"
 240 then
 241     intptr_t=0
 242 else
 243     intptr_t=1
 244 fi
 245
 246 if [ "$libdir" = "" ]
 247 then
 248     libdir="$prefix/lib"
 249 fi
 250 if [ "$bindir" = "" ]
 251 then
 252     bindir="$prefix/bin"
 253 fi
 254 if [ "$includedir" = "" ]
 255 then
 256     includedir="$prefix/include"
 257 fi
 258
 259 # Write output
 260 mkdir -p src
 261 echo Generating Makefile
 262 cat >Makefile <<ACEOF
 263 # Makefile generated by configure
 264 OBJECTS_SHARED=$(echo "${cfiles}" | sed s/\\.c/.c.shared.o/g)
 265 OBJECTS_STATIC=$(echo "${cfiles}" | sed s/\\.c/.c.static.o/g)
 266 CC=${cc}
 267 CFLAGS=${cflags}
 268 LDFLAGS=${ldflags}
 269
 270 all: libsbl${acsosuf} libsbl.a sbltool${exesuf}
 271
 272 libsbl${acsosuf}: \$(OBJECTS_SHARED)
 273         \$(CC) ${soflags} \$(OBJECTS_SHARED) -o \$@ \$(LDFLAGS)
 274
 275 libsbl.a: \$(OBJECTS_STATIC)
 276         ${ar} rcs ./libsbl.a \$(OBJECTS_STATIC)
 277
 278 sbltool${exesuf}: libsbl${acsosuf} ${srcdir}/sbltool.c
 279         \$(CC) \$(CFLAGS) -o \$@ ${srcdir}/sbltool.c -L. -lsbl \$(LDFLAGS)
 280
 281 install: all
 282         install -c -d -m 755 ${bindir} ${libdir} ${includedir} ${includedir}/slib
 283         install -c -p -m 644 ${srcdir}/include/slib.h ${includedir}
 284         install -c -p -m 644 ${srcdir}/include/slib/*.h ${includedir}/slib
 285         install -c -p -m 644 sbl.pc ${libdir}/pkgconfig
 286         install -c -p -m 644 libsbl.a ${libdir}
 287         install -c -p -m 755 libsbl${acsosuf} ${libdir}
 288         ln libsbl${acsosuf} ${libdir}/libsbl${sosuf}
 289         install -c -p -m 755 sbltool${exesuf} ${bindir}
 290
 291 # The test, always ensure the built version is used
 292 test: testdrv.exe
 293         ./testdrv.exe
 294
 295 .PHONY: clean
 296 clean:
 297         ${rm} -rf libsbl.*dylib libsbl.dll libsbl.*so* sbltool sbltool.exe testdrv.exe *.o */*.o *.a
 298
 299 distclean: clean
 300         -rmdir src testbin 2>/dev/null
 301         ${rm} -f Makefile config.mk config.h sbl.pc testdrv.h
 302
 303 # Everything below is the same, you will not like to read it line by line
 304 ACEOF
 305
 306 tmp=''
 307 includes=''
 308 entries='{'
 309 for file in "$srcdir"/test/*-test.c
 310 do
 311     tmp="${tmp} ${file}"
 312     testname=$(echo "${file}" | sed s,.*/,, | cut -f1 -d-)
 313     entries="${entries}{\"${testname}\", ${testname}_main}, "
 314     includes="${includes}#include \"${testname}-test.c\"\\n"
 315 done
 316
 317 echo Generating testdrv.h
 318 entries="${entries}{NULL, NULL}}"
 319 # shellcheck disable=SC2059 # the escapes need to be interpreted
 320 printf "${includes}" >testdrv.h
 321 sed "s/@TESTS@/${entries}/;s,@TFILES@,," "${srcdir}/test/testdrv.h.in" >>testdrv.h
 322 {
 323     echo testdrv.exe: "${srcdir}/test/testdrv.c" testdrv.h "${tmp}" libsbl.a
 324     echo "      \$(CC) \$(CFLAGS) -I${srcdir}/test -I. -o \$@ ${srcdir}/test/testdrv.c libsbl.a \$(LDFLAGS)"
 325 } >>Makefile
 326
 327 for file in $cfiles
 328 do
 329     echo "${file}.shared.o: ${srcdir}/${file} ${hfiles}"
 330     echo "      \$(CC) \$(CFLAGS) -fPIC -Dsbl_EXPORTS -c -o \$@ ${srcdir}/${file}"
 331     echo "${file}.static.o: ${srcdir}/${file} ${hfiles}"
 332     echo "      \$(CC) \$(CFLAGS) -c -o \$@ ${srcdir}/${file}"
 333 done >> Makefile
 334
 335 echo Generating sbl.pc
 336 sed "s,@CMAKE_INSTALL_PREFIX@,${prefix},;\
 337     s,@CMAKE_INSTALL_LIBDIR@,lib,;\
 338     s,@CMAKE_INSTALL_INCLUDEDIR@,include,;\
 339     s,@PROJECT_NAME@,${name},;\
 340     s,@PROJECT_DESCRIPTION@,${description},;\
 341     s,@PROJECT_VERSION@,${version},;" \
 342     "${srcdir}/sbl.pc.in" >sbl.pc
 343
 344 echo Generating config.h
 345 if [ $alloca_h -eq 1 ]
 346 then
 347     echo "#define HAVE_ALLOCA_H 1" >config.h
 348 else
 349     echo "#undef HAVE_ALLOCA_H" >config.h
 350 fi
 351
 352 if [ $fcntl_h -eq 1 ]
 353 then
 354     echo "#define HAVE_FCNTL_H 1" >>config.h
 355 else
 356     echo "#undef HAVE_FCNTL_H" >>config.h
 357 fi
 358
 359 if [ $stdbool_h -eq 1 ]
 360 then
 361     echo "#define HAVE_STDBOOL_H 1" >>config.h
 362 else
 363     echo "#undef HAVE_STDBOOL_H" >>config.h
 364 fi
 365
 366 if [ $stdint_h -eq 1 ]
 367 then
 368     echo "#define HAVE_STDINT_H 1" >>config.h
 369 else
 370     echo "#undef HAVE_STDINT_H" >>config.h
 371 fi
 372
 373 if [ $termios_h -eq 1 ]
 374 then
 375     echo "#define HAVE_TERMIOS_H 1" >>config.h
 376 else
 377     echo "#undef HAVE_TERMIOS_H" >>config.h
 378 fi
 379
 380 if [ $unistd_h -eq 1 ]
 381 then
 382     echo "#define HAVE_UNISTD_H 1" >>config.h
 383 else
 384     echo "#undef HAVE_UNISTD_H" >>config.h
 385 fi
 386
 387 if [ $size_t -eq 0 ]
 388 then
 389     echo "#define size_t unsigned int" >>config.h
 390 fi
 391
 392 if [ $intptr_t -eq 0 ]
 393 then
 394     echo "#define intptr_t long int" >>config.h
 395 fi
 396
 397 if [ "$disable_abort" = "on" ]
 398 then
 399     echo "#define S_NOABRT 1" >>config.h
 400 fi
 401
 402 if [ "$enable_dmalloc" = "on" ]
 403 then
 404     echo "#define DMALLOC" >>config.h
 405     echo "#define DMALLOC_FUNC_CHECK" >>config.h
 406 fi
 407
 408 echo "#define sbl_LIBRARY" >>config.h