config.h.in

   1 #if !defined __ASSEMBLER__ && !defined _ISOMAC && !defined __OPTIMIZE__
   2 # error "glibc cannot be compiled without optimization"
   3 #endif
   4
   5 /* Another evil option when it comes to compiling the C library is
   6    --ffast-math since it alters the ABI.  */
   7 #if defined __FAST_MATH__ && !defined TEST_FAST_MATH
   8 # error "glibc must not be compiled with -ffast-math"
   9 #endif
  10
  11 /* Define if using GNU ld, with support for weak symbols in a.out,
  12    and for symbol set and warning messages extensions in a.out and ELF.
  13    This implies HAVE_WEAK_SYMBOLS; set by --with-gnu-ld.  */
  14 #undef  HAVE_GNU_LD
  15
  16 /* Define if using ELF, which supports weak symbols.
  17    This implies HAVE_ASM_WEAK_DIRECTIVE and NO_UNDERSCORES; set by
  18    --with-elf.  */
  19 #undef  HAVE_ELF
  20
  21 /* Define if using XCOFF. Set by --with-xcoff.  */
  22 #undef  HAVE_XCOFF
  23
  24 /* Define if C symbols are asm symbols.  Don't define if C symbols
  25    have a `_' prepended to make the asm symbol.  */
  26 #undef  NO_UNDERSCORES
  27
  28 /* Define if weak symbols are available via the `.weak' directive.  */
  29 #undef  HAVE_ASM_WEAK_DIRECTIVE
  30
  31 /* Define if weak symbols are available via the `.weakext' directive.  */
  32 #undef  HAVE_ASM_WEAKEXT_DIRECTIVE
  33
  34 /* Define to the assembler line separator character for multiple
  35    assembler instructions per line.  Default is `;'  */
  36 #undef ASM_LINE_SEP
  37
  38 /* Define if not using ELF, but `.init' and `.fini' sections are available.  */
  39 #undef  HAVE_INITFINI
  40
  41 /* Define if __attribute__((section("foo"))) puts quotes around foo.  */
  42 #undef  HAVE_SECTION_QUOTES
  43
  44 /* Define if using the GNU assembler, gas.  */
  45 #undef  HAVE_GNU_AS
  46
  47 /* Define if the assembler supports the `.set' directive.  */
  48 #undef  HAVE_ASM_SET_DIRECTIVE
  49
  50 /* Define to the name of the assembler's directive for
  51    declaring a symbol global (default `.globl').  */
  52 #undef  ASM_GLOBAL_DIRECTIVE
  53
  54 /* Define to the prefix before `object' or `function' in the
  55    assembler's `.type' directive, if it has one.  */
  56 #undef  ASM_TYPE_DIRECTIVE_PREFIX
  57
  58 /* Define a symbol_name as a global .symbol_name for ld.  */
  59 #undef  HAVE_ASM_GLOBAL_DOT_NAME
  60
  61 /* Define if the assembler generates debugging information directly.  */
  62 #undef  HAVE_CPP_ASM_DEBUGINFO
  63
  64 /* Define if _Unwind_Find_FDE should be exported from glibc.  */
  65 #undef  EXPORT_UNWIND_FIND_FDE
  66
  67 /* Define to use GNU libio instead of GNU stdio.
  68    This is defined by configure under --enable-libio.  */
  69 #undef  USE_IN_LIBIO
  70
  71 /* Define if using ELF and the assembler supports the `.previous'
  72    directive.  */
  73 #undef  HAVE_ASM_PREVIOUS_DIRECTIVE
  74
  75 /* Define if using ELF and the assembler supports the `.popsection'
  76    directive.  */
  77 #undef  HAVE_ASM_POPSECTION_DIRECTIVE
  78
  79 /* Define if versioning of the library is wanted.  */
  80 #undef  DO_VERSIONING
  81
  82 /* Defined to the oldest ABI we support, like 2.1.  */
  83 #undef GLIBC_OLDEST_ABI
  84
  85 /* Define if static NSS modules are wanted.  */
  86 #undef  DO_STATIC_NSS
  87
  88 /* Define if gcc uses DWARF2 unwind information for exception support.  */
  89 #undef  HAVE_DWARF2_UNWIND_INFO
  90
  91 /* Define if gcc uses DWARF2 unwind information for exception support
  92    with static variable. */
  93 #undef  HAVE_DWARF2_UNWIND_INFO_STATIC
  94
  95 /* Define if the compiler supports __builtin_expect.  */
  96 #undef  HAVE_BUILTIN_EXPECT
  97
  98 /* Define if the compiler supports __builtin_memset.  */
  99 #undef  HAVE_BUILTIN_MEMSET
 100
 101 /* Define if the __thread keyword is supported.  */
 102 #undef HAVE___THREAD
 103
 104 /* Define if the compiler supports __attribute__((tls_model(""))).  */
 105 #undef HAVE_TLS_MODEL_ATTRIBUTE
 106
 107 /* Define if the regparm attribute shall be used for local functions
 108    (gcc on ix86 only).  */
 109 #undef  USE_REGPARMS
 110
 111 /* Defined on PowerPC if the GCC being used has a problem with clobbering
 112    certain registers (CR0, MQ, CTR, LR) in asm statements.  */
 113 #undef  BROKEN_PPC_ASM_CR0
 114
 115 /* Defined on SPARC if ld doesn't handle R_SPARC_WDISP22 against .hidden
 116    symbol.  sysdeps/sparc/sparc32/elf/configure.  */
 117 #undef  BROKEN_SPARC_WDISP22
 118
 119 /* Define if the linker supports the -z combreloc option.  */
 120 #undef  HAVE_Z_COMBRELOC
 121
 122 /* Define if the assembler supported .protected.  */
 123 #undef  HAVE_PROTECTED
 124
 125 /* Define if the assembler supported .hidden.  */
 126 #undef  HAVE_HIDDEN
 127
 128 /* Define if the compiler supports __attribute__ ((visibility (...))).  */
 129 #undef  HAVE_VISIBILITY_ATTRIBUTE
 130
 131 /* Define if the compiler doesn't support __attribute__ ((visibility (...)))
 132    together with __asm__ redirection properly.  */
 133 #undef  HAVE_BROKEN_VISIBILITY_ATTRIBUTE
 134
 135 /* Define if the compiler doesn't support __attribute__ ((alias (...)))
 136    together with __asm__ redirection properly.  */
 137 #undef  HAVE_BROKEN_ALIAS_ATTRIBUTE
 138
 139 /* Define if _rtld_local structure should be forced into .sdata section.  */
 140 #undef  HAVE_SDATA_SECTION
 141
 142 /* Define if binutils support TLS handling.  */
 143 #undef  HAVE_TLS_SUPPORT
 144
 145 /* Define if the linker supports .preinit_array/.init_array/.fini_array
 146    sections.  */
 147 #undef  HAVE_INITFINI_ARRAY
 148
 149 /* Define if the access to static and hidden variables is position independent
 150    and does not need relocations.  */
 151 #undef  PI_STATIC_AND_HIDDEN
 152
 153 /* Define this to disable the `hidden_proto' et al macros in
 154    include/libc-symbols.h that avoid PLT slots in the shared objects.  */
 155 #undef  NO_HIDDEN
 156
 157
 158 /* Defined to some form of __attribute__ ((...)) if the compiler supports
 159    a different, more efficient calling convention.  */
 160 #if defined USE_REGPARMS && !defined PROF && !defined __BOUNDED_POINTERS__
 161 # define internal_function __attribute__ ((regparm (3), stdcall))
 162 #endif
 163
 164 /* Linux specific: minimum supported kernel version.  */
 165 #undef  __LINUX_KERNEL_VERSION
 166
 167 /* Override abi-tags ABI version if necessary.  */
 168 #undef  __ABI_TAG_VERSION
 169
 170 /* An extension in gcc 2.96 and up allows the subtraction of two
 171    local labels.  */
 172 #undef  HAVE_SUBTRACT_LOCAL_LABELS
 173
 174 /* bash 2.0 introduced the _XXX_GNU_nonoption_argv_flags_ variable to help
 175    getopt determine whether a parameter is a flag or not.  This features
 176    was disabled later since it caused trouble.  We are by default therefore
 177    disabling the support as well.  */
 178 #undef USE_NONOPTION_FLAGS
 179
 180 /* Mach/Hurd specific: define if mig supports the `retcode' keyword.  */
 181 #undef  HAVE_MIG_RETCODE
 182
 183 /* Mach specific: define if the `host_page_size' RPC is available.  */
 184 #undef  HAVE_HOST_PAGE_SIZE
 185
 186 /* Mach/i386 specific: define if the `i386_io_perm_*' RPCs are available.  */
 187 #undef  HAVE_I386_IO_PERM_MODIFY
 188
 189 /* Mach/i386 specific: define if the `i386_set_gdt' RPC is available.  */
 190 #undef  HAVE_I386_SET_GDT
 191
 192 /* Defined if forced unwind support is available.  */
 193 #undef  HAVE_FORCED_UNWIND
 194
 195 /*
 196 \f */
 197
 198 #ifndef _LIBC
 199
 200 /* These symbols might be defined by some sysdeps configures.
 201    They are used only in miscellaneous generator programs, not
 202    in compiling libc itself.   */
 203
 204 /* sysdeps/generic/configure.in */
 205 #undef  HAVE_PSIGNAL
 206
 207 /* sysdeps/unix/configure.in */
 208 #undef  HAVE_STRERROR
 209
 210 /* sysdeps/unix/common/configure.in */
 211 #undef  HAVE_SYS_SIGLIST
 212 #undef  HAVE__SYS_SIGLIST
 213 #undef  HAVE__CTYPE_
 214 #undef  HAVE___CTYPE_
 215 #undef  HAVE___CTYPE
 216 #undef  HAVE__CTYPE__
 217 #undef  HAVE__CTYPE
 218 #undef  HAVE__LOCP
 219
 220 #endif
 221
 222 /*
 223 \f */
 224
 225 #ifdef  _LIBC
 226
 227 /* The zic and zdump programs need these definitions.  */
 228
 229 #define HAVE_STRERROR   1
 230
 231 /* The locale code needs these definitions.  */
 232
 233 #define HAVE_REGEX 1
 234
 235 #endif