configure.ac

   1 AC_INIT(dash, 0.5.9.1)
   2 AM_INIT_AUTOMAKE([foreign])
   3 AC_CONFIG_SRCDIR([src/main.c])
   4
   5 AC_CONFIG_HEADERS(config.h)
   6
   7 dnl Checks for programs.
   8 AC_PROG_CC
   9 AC_GNU_SOURCE
  10 AC_PROG_YACC
  11
  12 AC_MSG_CHECKING([for build system compiler])
  13 if test "$cross_compiling" = yes; then
  14         CC_FOR_BUILD=${CC_FOR_BUILD-cc}
  15 else
  16         CC_FOR_BUILD=${CC}
  17 fi
  18 AC_MSG_RESULT(${CC_FOR_BUILD})
  19 AC_SUBST(CC_FOR_BUILD)
  20
  21 AC_MSG_CHECKING([for __attribute__((__alias__()))])
  22 dash_cv_have_attribute_alias=no
  23 AC_LINK_IFELSE([AC_LANG_PROGRAM([void t() {}
  24                                  void a() __attribute__((__alias__("t")));],
  25                                 [a();])],
  26                [dash_cv_have_attribute_alias=yes])
  27 AC_MSG_RESULT($dash_cv_have_attribute_alias)
  28 if test "x$dash_cv_have_attribute_alias" = xyes; then
  29   AC_DEFINE([HAVE_ALIAS_ATTRIBUTE], 1,
  30             [Define if __attribute__((__alias__())) is supported])
  31 fi
  32
  33 AC_ARG_ENABLE(static, AS_HELP_STRING(--enable-static, \
  34                                      [Build statical linked program]))
  35 if test "$enable_static" = "yes"; then
  36         export LDFLAGS="-static -Wl,--fatal-warnings"
  37 fi
  38
  39 AC_ARG_ENABLE(fnmatch, AS_HELP_STRING(--enable-fnmatch, \
  40                                       [Use fnmatch(3) from libc]))
  41 AC_ARG_ENABLE(glob, AS_HELP_STRING(--enable-glob, [Use glob(3) from libc]))
  42
  43 dnl Checks for libraries.
  44
  45 dnl Checks for header files.
  46 AC_CHECK_HEADERS(alloca.h paths.h)
  47
  48 dnl Check for declarations
  49 AC_CHECK_DECL([_PATH_BSHELL],,AC_DEFINE_UNQUOTED([_PATH_BSHELL], "/bin/sh", [Define to system shell path]),[
  50 #ifdef HAVE_PATHS_H
  51 #include <paths.h>
  52 #endif
  53 ])
  54 AC_CHECK_DECL([_PATH_DEVNULL],,AC_DEFINE_UNQUOTED([_PATH_DEVNULL], "/dev/null", [Define to devnull device node path]),[
  55 #ifdef HAVE_PATHS_H
  56 #include <paths.h>
  57 #endif
  58 ])
  59 AC_CHECK_DECL([_PATH_TTY],,AC_DEFINE_UNQUOTED([_PATH_TTY], "/dev/tty", [Define to tty device node path]),[
  60 #ifdef HAVE_PATHS_H
  61 #include <paths.h>
  62 #endif
  63 ])
  64
  65 dnl Some systems lack isblank
  66 AC_CHECK_DECLS([isblank],,,[#include <ctype.h>])
  67
  68 dnl Check for sizes of types
  69 AC_CHECK_SIZEOF([intmax_t])
  70 AC_CHECK_SIZEOF([long long int])
  71
  72 dnl Select a fallback format string for intmax_t in case we don't find PRIdMAX
  73 if test "x$ac_cv_sizeof_intmax_t" = "x$ac_cv_sizeof_long_long_int"; then
  74   intmax_fstr="lld"
  75 else
  76   intmax_fstr="jd"
  77 fi
  78
  79 dnl Check for PRIdMAX and define it to a fallback if not found
  80 AC_CHECK_DECL([PRIdMAX],,
  81         [AC_DEFINE_UNQUOTED([PRIdMAX], "$intmax_fstr",
  82                                        [Define to printf format string for intmax_t])],
  83         [
  84 #include <inttypes.h>
  85 ])
  86
  87 dnl Checks for library functions.
  88 AC_CHECK_FUNCS(bsearch faccessat getpwnam getrlimit isalpha killpg \
  89                mempcpy \
  90                sigsetmask stpcpy strchrnul strsignal strtod strtoimax \
  91                strtoumax sysconf)
  92
  93 dnl Check whether it's worth working around FreeBSD PR kern/125009.
  94 dnl The traditional behavior of access/faccessat is crazy, but
  95 dnl POSIX.1-2008 explicitly allows those functions to misbehave.
  96 dnl
  97 dnl Unaffected kernels:
  98 dnl
  99 dnl - all versions of Linux
 100 dnl - NetBSD sys/kern/vfs_subr.c 1.64, 1997-04-23
 101 dnl - FreeBSD 9 (r212002), 2010-09-10
 102 dnl - OpenBSD sys/kern/vfs_subr.c 1.166, 2008-06-09
 103 dnl
 104 dnl Also worked around in Debian's libc0.1 2.13-19 when using
 105 dnl kFreeBSD 8.
 106
 107 AC_ARG_ENABLE(test-workaround, AS_HELP_STRING(--enable-test-workaround, \
 108         [Guard against faccessat(2) that tells root all files are executable]),,
 109         [enable_test_workaround=auto])
 110
 111 if test "enable_test_workaround" = "auto" &&
 112    test "$ac_cv_func_faccessat" = yes; then
 113         case `uname -s 2>/dev/null` in
 114         GNU/kFreeBSD | \
 115         FreeBSD)
 116                 enable_test_workaround=yes
 117         esac
 118 fi
 119 if test "$enable_test_workaround" = "yes"; then
 120         AC_DEFINE([HAVE_TRADITIONAL_FACCESSAT], [1],
 121                 [Define if your faccessat tells root all files are executable])
 122 fi
 123
 124 if test "$enable_fnmatch" = yes; then
 125         use_fnmatch=
 126         AC_CHECK_FUNCS(fnmatch, use_fnmatch=yes)
 127 fi
 128
 129 if test "$use_fnmatch" = yes && test "$enable_glob" = yes; then
 130         AC_CHECK_FUNCS(glob)
 131 fi
 132
 133 dnl Check for klibc signal.
 134 AC_CHECK_FUNC(signal)
 135 if test "$ac_cv_func_signal" != yes; then
 136         AC_CHECK_FUNC(bsd_signal,
 137                       [AC_DEFINE(signal, bsd_signal,
 138                                  [klibc has bsd_signal instead of signal])])
 139 fi
 140
 141 dnl Check for stat64 (dietlibc/klibc).
 142 AC_CHECK_FUNC(stat64,, [
 143         AC_DEFINE(fstat64, fstat, [64-bit operations are the same as 32-bit])
 144         AC_DEFINE(lstat64, lstat, [64-bit operations are the same as 32-bit])
 145         AC_DEFINE(stat64, stat, [64-bit operations are the same as 32-bit])
 146 ])
 147
 148 AC_CHECK_FUNC(open64,, [
 149         AC_DEFINE(open64, open, [64-bit operations are the same as 32-bit])
 150 ])
 151
 152 dnl Check if struct stat has st_mtim.
 153 AC_MSG_CHECKING(for stat::st_mtim)
 154 AC_COMPILE_IFELSE(
 155 [AC_LANG_PROGRAM([#include <time.h>
 156 #include <sys/time.h>
 157 #include <sys/stat.h>],
 158 [struct stat foo; return sizeof(foo.st_mtim.tv_sec)])],
 159 have_st_mtim=yes, have_st_mtim=no)
 160 AC_MSG_RESULT($have_st_mtim)
 161 if test "$have_st_mtim" = "yes"; then
 162         AC_DEFINE([HAVE_ST_MTIM], [1],
 163                 [Define if your `struct stat' has `st_mtim'])
 164 fi
 165
 166 AC_ARG_WITH(libedit, AS_HELP_STRING(--with-libedit, [Compile with libedit support]))
 167 use_libedit=
 168 if test "$with_libedit" = "yes"; then
 169         AC_CHECK_LIB(edit, history_init, [
 170                 AC_CHECK_HEADER([histedit.h], [use_libedit="yes"],
 171                                 AC_MSG_ERROR(
 172                                         [Can't find required header files.]))])
 173 fi
 174 if test "$use_libedit" != "yes"; then
 175         AC_DEFINE([SMALL], 1, [Define if you build with -DSMALL])
 176 else
 177         export LIBS="$LIBS -ledit"
 178 fi
 179 AC_ARG_ENABLE(lineno, AS_HELP_STRING(--disable-lineno, \
 180                                      [Disable LINENO support]))
 181 if test "$enable_lineno" != "no"; then
 182         AC_DEFINE([WITH_LINENO], 1, [Define if you build with -DWITH_LINENO])
 183 fi
 184 AC_CONFIG_FILES([Makefile src/Makefile])
 185 AC_OUTPUT