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111
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1 dnl Process this with autoconf to create configure
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2
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3 AC_PREREQ(2.64)
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4
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5 AC_INIT([libffi], [3.99999], [http://github.com/atgreen/libffi/issues])
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6 AC_CONFIG_HEADERS([fficonfig.h])
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7
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8 AM_ENABLE_MULTILIB(, ..)
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9
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10 AC_CANONICAL_SYSTEM
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11 target_alias=${target_alias-$host_alias}
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12
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13 AM_INIT_AUTOMAKE([no-dist])
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14
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15 # See if makeinfo has been installed and is modern enough
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16 # that we can use it.
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17 ACX_CHECK_PROG_VER([MAKEINFO], [makeinfo], [--version],
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18 [GNU texinfo.* \([0-9][0-9.]*\)],
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19 [4.[4-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
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20 AM_CONDITIONAL(BUILD_INFO, test $gcc_cv_prog_makeinfo_modern = "yes")
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21
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22 # We would like our source tree to be readonly. However when releases or
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23 # pre-releases are generated, the flex/bison generated files as well as the
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24 # various formats of manuals need to be included along with the rest of the
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25 # sources. Therefore we have --enable-generated-files-in-srcdir to do
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26 # just that.
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27 AC_MSG_CHECKING(generated-files-in-srcdir)
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28 AC_ARG_ENABLE(generated-files-in-srcdir,
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29 AS_HELP_STRING([--enable-generated-files-in-srcdir],
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30 [put copies of generated files in source dir intended for creating source tarballs for users without texinfo bison or flex]),
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31 [case "$enableval" in
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32 yes) enable_generated_files_in_srcdir=yes ;;
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33 no) enable_generated_files_in_srcdir=no ;;
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34 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
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35 esac],
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36 [enable_generated_files_in_srcdir=no])
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37 AC_MSG_RESULT($enable_generated_files_in_srcdir)
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38 AM_CONDITIONAL(GENINSRC, test "$enable_generated_files_in_srcdir" = yes)
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39
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40 # The same as in boehm-gc and libstdc++. Have to borrow it from there.
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41 # We must force CC to /not/ be precious variables; otherwise
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42 # the wrong, non-multilib-adjusted value will be used in multilibs.
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43 # As a side effect, we have to subst CFLAGS ourselves.
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44 # Also save and restore CFLAGS, since AC_PROG_CC will come up with
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45 # defaults of its own if none are provided.
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46
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47 m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
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48 m4_define([_AC_ARG_VAR_PRECIOUS],[])
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49 save_CFLAGS=$CFLAGS
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50 AC_PROG_CC
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51 AC_PROG_CXX
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52 CFLAGS=$save_CFLAGS
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53 m4_undefine([_AC_ARG_VAR_PRECIOUS])
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54 m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
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55
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56 AC_SUBST(CFLAGS)
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57
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58 AM_PROG_AS
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59 AM_PROG_CC_C_O
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60 AC_PROG_LIBTOOL
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61
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62 # Test for 64-bit build.
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63 AC_CHECK_SIZEOF([size_t])
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64
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65 AM_MAINTAINER_MODE
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66
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67 AC_CHECK_HEADERS(sys/mman.h)
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68 AC_CHECK_FUNCS([mmap mkostemp])
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69 AC_FUNC_MMAP_BLACKLIST
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70
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71 dnl The -no-testsuite modules omit the test subdir.
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72 AM_CONDITIONAL(TESTSUBDIR, test -d $srcdir/testsuite)
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73
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74 TARGETDIR="unknown"
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75 HAVE_LONG_DOUBLE_VARIANT=0
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76
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77 . ${srcdir}/configure.host
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78
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79 if test -n "${UNSUPPORTED}"; then
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80 AC_MSG_ERROR(["libffi has not been ported to $host."])
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81 fi
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82
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83 AC_SUBST(AM_RUNTESTFLAGS)
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84 AC_SUBST(AM_LTLDFLAGS)
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85
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86 AC_HEADER_STDC
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87 AC_CHECK_FUNCS(memcpy)
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88 AC_FUNC_ALLOCA
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89
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90 AC_CHECK_SIZEOF(double)
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91 AC_CHECK_SIZEOF(long double)
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92
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93 # Also AC_SUBST this variable for ffi.h.
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94 if test -z "$HAVE_LONG_DOUBLE"; then
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95 HAVE_LONG_DOUBLE=0
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96 if test $ac_cv_sizeof_long_double != 0; then
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97 if test $HAVE_LONG_DOUBLE_VARIANT != 0; then
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98 AC_DEFINE(HAVE_LONG_DOUBLE_VARIANT, 1, [Define if you support more than one size of the long double type])
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99 HAVE_LONG_DOUBLE=1
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100 else
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101 if test $ac_cv_sizeof_double != $ac_cv_sizeof_long_double; then
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102 HAVE_LONG_DOUBLE=1
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103 AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the long double type and it is bigger than a double])
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104 fi
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105 fi
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106 fi
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107 fi
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108 AC_SUBST(HAVE_LONG_DOUBLE)
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109 AC_SUBST(HAVE_LONG_DOUBLE_VARIANT)
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110
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111 AC_C_BIGENDIAN
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112
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113 GCC_AS_CFI_PSEUDO_OP
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114
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115 case "$TARGET" in
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116 SPARC)
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117 AC_CACHE_CHECK([assembler and linker support unaligned pc related relocs],
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118 libffi_cv_as_sparc_ua_pcrel, [
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119 save_CFLAGS="$CFLAGS"
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120 save_LDFLAGS="$LDFLAGS"
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121 CFLAGS="$CFLAGS -fpic"
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122 LDFLAGS="$LDFLAGS -shared"
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123 AC_TRY_LINK([asm (".text; foo: nop; .data; .align 4; .byte 0; .uaword %r_disp32(foo); .text");],,
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124 [libffi_cv_as_sparc_ua_pcrel=yes],
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125 [libffi_cv_as_sparc_ua_pcrel=no])
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126 CFLAGS="$save_CFLAGS"
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127 LDFLAGS="$save_LDFLAGS"])
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128 if test "x$libffi_cv_as_sparc_ua_pcrel" = xyes; then
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129 AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
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130 [Define if your assembler and linker support unaligned PC relative relocs.])
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131 fi
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132
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133 AC_CACHE_CHECK([assembler .register pseudo-op support],
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134 libffi_cv_as_register_pseudo_op, [
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135 libffi_cv_as_register_pseudo_op=unknown
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136 # Check if we have .register
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137 AC_TRY_COMPILE(,[asm (".register %g2, #scratch");],
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138 [libffi_cv_as_register_pseudo_op=yes],
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139 [libffi_cv_as_register_pseudo_op=no])
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140 ])
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141 if test "x$libffi_cv_as_register_pseudo_op" = xyes; then
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142 AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
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143 [Define if your assembler supports .register.])
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144 fi
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145 ;;
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146
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147 X86*)
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148 AC_CACHE_CHECK([assembler supports pc related relocs],
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149 libffi_cv_as_x86_pcrel, [
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150 libffi_cv_as_x86_pcrel=no
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151 echo '.text; foo: nop; .data; .long foo-.; .text' > conftest.s
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152 if $CC $CFLAGS -c conftest.s > /dev/null 2>&1; then
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153 libffi_cv_as_x86_pcrel=yes
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154 fi
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155 ])
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156 if test "x$libffi_cv_as_x86_pcrel" = xyes; then
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157 AC_DEFINE(HAVE_AS_X86_PCREL, 1,
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158 [Define if your assembler supports PC relative relocs.])
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159 fi
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160 ;;
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161
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162 S390)
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163 AC_CACHE_CHECK([compiler uses zarch features],
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164 libffi_cv_as_s390_zarch, [
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165 libffi_cv_as_s390_zarch=no
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166 echo 'void foo(void) { bar(); bar(); }' > conftest.c
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167 if $CC $CFLAGS -S conftest.c > /dev/null 2>&1; then
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168 if grep -q brasl conftest.s; then
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169 libffi_cv_as_s390_zarch=yes
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170 fi
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171 fi
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172 ])
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173 if test "x$libffi_cv_as_s390_zarch" = xyes; then
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174 AC_DEFINE(HAVE_AS_S390_ZARCH, 1,
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175 [Define if the compiler uses zarch features.])
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176 fi
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177 ;;
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178 esac
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179
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180 # On PaX enable kernels that have MPROTECT enable we can't use PROT_EXEC.
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181 AC_ARG_ENABLE(pax_emutramp,
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182 [ --enable-pax_emutramp enable pax emulated trampolines, for we can't use PROT_EXEC],
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183 if test "$enable_pax_emutramp" = "yes"; then
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184 AC_DEFINE(FFI_MMAP_EXEC_EMUTRAMP_PAX, 1,
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185 [Define this if you want to enable pax emulated trampolines])
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186 fi)
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187
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188 FFI_EXEC_TRAMPOLINE_TABLE=0
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189 case "$target" in
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190 *arm*-apple-darwin* | aarch64-apple-darwin*)
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191 FFI_EXEC_TRAMPOLINE_TABLE=1
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192 AC_DEFINE(FFI_EXEC_TRAMPOLINE_TABLE, 1,
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193 [Cannot use PROT_EXEC on this target, so, we revert to
|
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194 alternative means])
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195 ;;
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196 *-apple-darwin1* | *-*-freebsd* | *-*-kfreebsd* | *-*-openbsd* | *-pc-solaris*)
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197 AC_DEFINE(FFI_MMAP_EXEC_WRIT, 1,
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198 [Cannot use malloc on this target, so, we revert to
|
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199 alternative means])
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200 ;;
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201 esac
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202 AM_CONDITIONAL(FFI_EXEC_TRAMPOLINE_TABLE, test x$FFI_EXEC_TRAMPOLINE_TABLE = x1)
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203 AC_SUBST(FFI_EXEC_TRAMPOLINE_TABLE)
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204
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205 if test x$TARGET = xX86_64; then
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206 AC_CACHE_CHECK([toolchain supports unwind section type],
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207 libffi_cv_as_x86_64_unwind_section_type, [
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208 cat > conftest1.s << EOF
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209 .text
|
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210 .globl foo
|
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211 foo:
|
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|
212 jmp bar
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|
213 .section .eh_frame,"a",@unwind
|
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214 bar:
|
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215 EOF
|
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216
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|
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217 cat > conftest2.c << EOF
|
|
|
218 extern void foo();
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219 int main(){foo();}
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220 EOF
|
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221
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222 libffi_cv_as_x86_64_unwind_section_type=no
|
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223 # we ensure that we can compile _and_ link an assembly file containing an @unwind section
|
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224 # since the compiler can support it and not the linker (ie old binutils)
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225 if $CC -Wa,--fatal-warnings $CFLAGS -c conftest1.s > /dev/null 2>&1 && \
|
|
|
226 $CC conftest2.c conftest1.o > /dev/null 2>&1 ; then
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227 libffi_cv_as_x86_64_unwind_section_type=yes
|
|
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228 fi
|
|
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229 ])
|
|
|
230 if test "x$libffi_cv_as_x86_64_unwind_section_type" = xyes; then
|
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231 AC_DEFINE(HAVE_AS_X86_64_UNWIND_SECTION_TYPE, 1,
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232 [Define if your assembler supports unwind section type.])
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233 fi
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234 fi
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235
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236 if test "x$GCC" = "xyes"; then
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237 AC_CACHE_CHECK([whether .eh_frame section should be read-only],
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238 libffi_cv_ro_eh_frame, [
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239 libffi_cv_ro_eh_frame=no
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240 echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c
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241 if $CC $CFLAGS -c -fpic -fexceptions -o conftest.o conftest.c > /dev/null 2>&1; then
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242 objdump -h conftest.o > conftest.dump 2>&1
|
|
|
243 libffi_eh_frame_line=`grep -n eh_frame conftest.dump | cut -d: -f 1`
|
|
|
244 if test "x$libffi_eh_frame_line" != "x"; then
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245 libffi_test_line=`expr $libffi_eh_frame_line + 1`p
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246 sed -n $libffi_test_line conftest.dump > conftest.line
|
|
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247 if grep READONLY conftest.line > /dev/null; then
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248 libffi_cv_ro_eh_frame=yes
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249 fi
|
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250 fi
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251 fi
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252 rm -f conftest.*
|
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253 ])
|
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254 if test "x$libffi_cv_ro_eh_frame" = xyes; then
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255 AC_DEFINE(HAVE_RO_EH_FRAME, 1,
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256 [Define if .eh_frame sections should be read-only.])
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|
|
257 AC_DEFINE(EH_FRAME_FLAGS, "a",
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|
|
258 [Define to the flags needed for the .section .eh_frame directive. ])
|
|
|
259 else
|
|
|
260 AC_DEFINE(EH_FRAME_FLAGS, "aw",
|
|
|
261 [Define to the flags needed for the .section .eh_frame directive. ])
|
|
|
262 fi
|
|
|
263
|
|
|
264 AC_CACHE_CHECK([for __attribute__((visibility("hidden")))],
|
|
|
265 libffi_cv_hidden_visibility_attribute, [
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266 echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1 ; }' > conftest.c
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267 libffi_cv_hidden_visibility_attribute=no
|
|
|
268 if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
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|
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269 if grep '\.hidden.*foo' conftest.s >/dev/null; then
|
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270 libffi_cv_hidden_visibility_attribute=yes
|
|
|
271 fi
|
|
|
272 fi
|
|
|
273 rm -f conftest.*
|
|
|
274 ])
|
|
|
275 if test $libffi_cv_hidden_visibility_attribute = yes; then
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276 AC_DEFINE(HAVE_HIDDEN_VISIBILITY_ATTRIBUTE, 1,
|
|
|
277 [Define if __attribute__((visibility("hidden"))) is supported.])
|
|
|
278 fi
|
|
|
279 fi
|
|
|
280
|
|
|
281 AH_BOTTOM([
|
|
|
282 #ifdef HAVE_HIDDEN_VISIBILITY_ATTRIBUTE
|
|
|
283 #ifdef LIBFFI_ASM
|
|
|
284 #define FFI_HIDDEN(name) .hidden name
|
|
|
285 #else
|
|
|
286 #define FFI_HIDDEN __attribute__ ((visibility ("hidden")))
|
|
|
287 #endif
|
|
|
288 #else
|
|
|
289 #ifdef LIBFFI_ASM
|
|
|
290 #define FFI_HIDDEN(name)
|
|
|
291 #else
|
|
|
292 #define FFI_HIDDEN
|
|
|
293 #endif
|
|
|
294 #endif
|
|
|
295 ])
|
|
|
296
|
|
|
297 AC_SUBST(TARGET)
|
|
|
298 AC_SUBST(TARGETDIR)
|
|
|
299
|
|
|
300 changequote(<,>)
|
|
|
301 TARGET_OBJ=
|
|
|
302 for i in $SOURCES; do
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|
|
303 TARGET_OBJ="${TARGET_OBJ} src/${TARGETDIR}/"`echo $i | sed 's/[cS]$/lo/'`
|
|
|
304 done
|
|
|
305 changequote([,])
|
|
|
306 AC_SUBST(TARGET_OBJ)
|
|
|
307
|
|
|
308 AC_SUBST(SHELL)
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|
|
309
|
|
|
310 AC_ARG_ENABLE(debug,
|
|
|
311 [ --enable-debug debugging mode],
|
|
|
312 if test "$enable_debug" = "yes"; then
|
|
|
313 AC_DEFINE(FFI_DEBUG, 1, [Define this if you want extra debugging.])
|
|
|
314 fi)
|
|
|
315 AM_CONDITIONAL(FFI_DEBUG, test "$enable_debug" = "yes")
|
|
|
316
|
|
|
317 AC_ARG_ENABLE(structs,
|
|
|
318 [ --disable-structs omit code for struct support],
|
|
|
319 if test "$enable_structs" = "no"; then
|
|
|
320 AC_DEFINE(FFI_NO_STRUCTS, 1, [Define this if you do not want support for aggregate types.])
|
|
|
321 fi)
|
|
|
322 AM_CONDITIONAL(FFI_DEBUG, test "$enable_debug" = "yes")
|
|
|
323
|
|
|
324 AC_ARG_ENABLE(raw-api,
|
|
|
325 [ --disable-raw-api make the raw api unavailable],
|
|
|
326 if test "$enable_raw_api" = "no"; then
|
|
|
327 AC_DEFINE(FFI_NO_RAW_API, 1, [Define this if you do not want support for the raw API.])
|
|
|
328 fi)
|
|
|
329
|
|
|
330 AC_ARG_ENABLE(purify-safety,
|
|
|
331 [ --enable-purify-safety purify-safe mode],
|
|
|
332 if test "$enable_purify_safety" = "yes"; then
|
|
|
333 AC_DEFINE(USING_PURIFY, 1, [Define this if you are using Purify and want to suppress spurious messages.])
|
|
|
334 fi)
|
|
|
335
|
|
|
336 if test -n "$with_cross_host" &&
|
|
|
337 test x"$with_cross_host" != x"no"; then
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|
|
338 toolexecdir='$(exec_prefix)/$(target_alias)'
|
|
|
339 toolexeclibdir='$(toolexecdir)/lib'
|
|
|
340 else
|
|
|
341 toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
|
|
|
342 toolexeclibdir='$(libdir)'
|
|
|
343 fi
|
|
|
344 multi_os_directory=`$CC -print-multi-os-directory`
|
|
|
345 case $multi_os_directory in
|
|
|
346 .) ;; # Avoid trailing /.
|
|
|
347 *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
|
|
|
348 esac
|
|
|
349 AC_SUBST(toolexecdir)
|
|
|
350 AC_SUBST(toolexeclibdir)
|
|
|
351
|
|
|
352 if test "${multilib}" = "yes"; then
|
|
|
353 multilib_arg="--enable-multilib"
|
|
|
354 else
|
|
|
355 multilib_arg=
|
|
|
356 fi
|
|
|
357
|
|
|
358 # Check linker support.
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359 LIBAT_ENABLE_SYMVERS
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360
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361 # Determine what GCC version number to use in filesystem paths.
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362 GCC_BASE_VER
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363
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364 AC_CONFIG_COMMANDS(include, [test -d include || mkdir include])
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365 AC_CONFIG_COMMANDS(src, [
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366 test -d src || mkdir src
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367 test -d src/$TARGETDIR || mkdir src/$TARGETDIR
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368 ], [TARGETDIR="$TARGETDIR"])
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369
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370 AC_CONFIG_LINKS(include/ffitarget.h:src/$TARGETDIR/ffitarget.h)
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371
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372 AC_CONFIG_FILES(include/Makefile include/ffi.h Makefile testsuite/Makefile man/Makefile libffi.pc)
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373
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374 AC_OUTPUT
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