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 if CFI directives are available.  */
  35 #undef  HAVE_ASM_CFI_DIRECTIVES
  36
  37 /* Define to the assembler line separator character for multiple
  38    assembler instructions per line.  Default is `;'  */
  39 #undef ASM_LINE_SEP
  40
  41 /* Define if not using ELF, but `.init' and `.fini' sections are available.  */
  42 #undef  HAVE_INITFINI
  43
  44 /* Define if __attribute__((section("foo"))) puts quotes around foo.  */
  45 #undef  HAVE_SECTION_QUOTES
  46
  47 /* Define if using the GNU assembler, gas.  */
  48 #undef  HAVE_GNU_AS
  49
  50 /* Define if the assembler supports the `.set' directive.  */
  51 #undef  HAVE_ASM_SET_DIRECTIVE
  52
  53 /* Define to the name of the assembler's directive for
  54    declaring a symbol global (default `.globl').  */
  55 #undef  ASM_GLOBAL_DIRECTIVE
  56
  57 /* Define to the prefix before `object' or `function' in the
  58    assembler's `.type' directive, if it has one.  */
  59 #undef  ASM_TYPE_DIRECTIVE_PREFIX
  60
  61 /* Define a symbol_name as a global .symbol_name for ld.  */
  62 #undef  HAVE_ASM_GLOBAL_DOT_NAME
  63
  64 /* On powerpc64, use overlapping .opd entries.  */
  65 #undef  USE_PPC64_OVERLAPPING_OPD
  66
  67 /* Define if the assembler generates debugging information directly.  */
  68 #undef  HAVE_CPP_ASM_DEBUGINFO
  69
  70 /* Define if _Unwind_Find_FDE should be exported from glibc.  */
  71 #undef  EXPORT_UNWIND_FIND_FDE
  72
  73 /* Define to use GNU libio instead of GNU stdio.
  74    This is defined by configure under --enable-libio.  */
  75 #undef  USE_IN_LIBIO
  76
  77 /* Define if using ELF and the assembler supports the `.previous'
  78    directive.  */
  79 #undef  HAVE_ASM_PREVIOUS_DIRECTIVE
  80
  81 /* Define if using ELF and the assembler supports the `.popsection'
  82    directive.  */
  83 #undef  HAVE_ASM_POPSECTION_DIRECTIVE
  84
  85 /* Define if versioning of the library is wanted.  */
  86 #undef  DO_VERSIONING
  87
  88 /* Defined to the oldest ABI we support, like 2.1.  */
  89 #undef GLIBC_OLDEST_ABI
  90
  91 /* Define if static NSS modules are wanted.  */
  92 #undef  DO_STATIC_NSS
  93
  94 /* Define if gcc uses DWARF2 unwind information for exception support.  */
  95 #undef  HAVE_DWARF2_UNWIND_INFO
  96
  97 /* Define if gcc uses DWARF2 unwind information for exception support
  98    with static variable. */
  99 #undef  HAVE_DWARF2_UNWIND_INFO_STATIC
 100
 101 /* Define if the compiler supports __builtin_expect.  */
 102 #undef  HAVE_BUILTIN_EXPECT
 103
 104 /* Define if the compiler supports __builtin_memset.  */
 105 #undef  HAVE_BUILTIN_MEMSET
 106
 107 /* Define if __asm () on built-in function's prototype causes redirection of
 108    the builtin.  */
 109 #undef  HAVE_BUILTIN_REDIRECTION
 110
 111 /* Define if the __thread keyword is supported.  */
 112 #undef HAVE___THREAD
 113
 114 /* Define if the compiler supports __attribute__((tls_model(""))).  */
 115 #undef HAVE_TLS_MODEL_ATTRIBUTE
 116
 117 /* Define if the regparm attribute shall be used for local functions
 118    (gcc on ix86 only).  */
 119 #undef  USE_REGPARMS
 120
 121 /* Defined on PowerPC if the GCC being used has a problem with clobbering
 122    certain registers (CR0, MQ, CTR, LR) in asm statements.  */
 123 #undef  BROKEN_PPC_ASM_CR0
 124
 125 /* Defined on SPARC if ld doesn't handle R_SPARC_WDISP22 against .hidden
 126    symbol.  sysdeps/sparc/sparc32/elf/configure.  */
 127 #undef  BROKEN_SPARC_WDISP22
 128
 129 /* Define if the linker supports the -z combreloc option.  */
 130 #undef  HAVE_Z_COMBRELOC
 131
 132 /* Define if the assembler supported .protected.  */
 133 #undef  HAVE_PROTECTED
 134
 135 /* Define if the assembler supported .hidden.  */
 136 #undef  HAVE_HIDDEN
 137
 138 /* Define if the compiler supports __attribute__ ((visibility (...))).  */
 139 #undef  HAVE_VISIBILITY_ATTRIBUTE
 140
 141 /* Define if the compiler doesn't support __attribute__ ((visibility (...)))
 142    together with __asm__ redirection properly.  */
 143 #undef  HAVE_BROKEN_VISIBILITY_ATTRIBUTE
 144
 145 /* Define if the compiler doesn't support __attribute__ ((alias (...)))
 146    together with __asm__ redirection properly.  */
 147 #undef  HAVE_BROKEN_ALIAS_ATTRIBUTE
 148
 149 /* Define if _rtld_local structure should be forced into .sdata section.  */
 150 #undef  HAVE_SDATA_SECTION
 151
 152 /* Define if binutils support TLS handling.  */
 153 #undef  HAVE_TLS_SUPPORT
 154
 155 /* Define if the linker supports .preinit_array/.init_array/.fini_array
 156    sections.  */
 157 #undef  HAVE_INITFINI_ARRAY
 158
 159 /* Define if the compiler's exception support is based on libunwind.  */
 160 #undef  HAVE_CC_WITH_LIBUNWIND
 161
 162 /* Define if the access to static and hidden variables is position independent
 163    and does not need relocations.  */
 164 #undef  PI_STATIC_AND_HIDDEN
 165
 166 /* Define this to disable the `hidden_proto' et al macros in
 167    include/libc-symbols.h that avoid PLT slots in the shared objects.  */
 168 #undef  NO_HIDDEN
 169
 170
 171 /* Defined to some form of __attribute__ ((...)) if the compiler supports
 172    a different, more efficient calling convention.  */
 173 #if defined USE_REGPARMS && !defined PROF && !defined __BOUNDED_POINTERS__
 174 # define internal_function __attribute__ ((regparm (3), stdcall))
 175 #endif
 176
 177 /* Linux specific: minimum supported kernel version.  */
 178 #undef  __LINUX_KERNEL_VERSION
 179
 180 /* Override abi-tags ABI version if necessary.  */
 181 #undef  __ABI_TAG_VERSION
 182
 183 /* An extension in gcc 2.96 and up allows the subtraction of two
 184    local labels.  */
 185 #undef  HAVE_SUBTRACT_LOCAL_LABELS
 186
 187 /* bash 2.0 introduced the _XXX_GNU_nonoption_argv_flags_ variable to help
 188    getopt determine whether a parameter is a flag or not.  This features
 189    was disabled later since it caused trouble.  We are by default therefore
 190    disabling the support as well.  */
 191 #undef USE_NONOPTION_FLAGS
 192
 193 /* Mach/Hurd specific: define if mig supports the `retcode' keyword.  */
 194 #undef  HAVE_MIG_RETCODE
 195
 196 /* Mach specific: define if the `host_page_size' RPC is available.  */
 197 #undef  HAVE_HOST_PAGE_SIZE
 198
 199 /* Mach/i386 specific: define if the `i386_io_perm_*' RPCs are available.  */
 200 #undef  HAVE_I386_IO_PERM_MODIFY
 201
 202 /* Mach/i386 specific: define if the `i386_set_gdt' RPC is available.  */
 203 #undef  HAVE_I386_SET_GDT
 204
 205 /* Defined if forced unwind support is available.  */
 206 #undef  HAVE_FORCED_UNWIND
 207
 208 /* Defined if the linker supports the -z relro option.  */
 209 #undef HAVE_Z_RELRO
 210
 211 /* Defined of libidn is available.  */
 212 #undef HAVE_LIBIDN
 213
 214 /* Define if inlined system calls are available.  */
 215 #undef HAVE_INLINED_SYSCALLS
 216
 217 /*
 218 \f */
 219
 220 #ifndef _LIBC
 221
 222 /* These symbols might be defined by some sysdeps configures.
 223    They are used only in miscellaneous generator programs, not
 224    in compiling libc itself.   */
 225
 226 /* sysdeps/generic/configure.in */
 227 #undef  HAVE_PSIGNAL
 228
 229 /* sysdeps/unix/configure.in */
 230 #undef  HAVE_STRERROR
 231
 232 /* sysdeps/unix/common/configure.in */
 233 #undef  HAVE_SYS_SIGLIST
 234 #undef  HAVE__SYS_SIGLIST
 235 #undef  HAVE__CTYPE_
 236 #undef  HAVE___CTYPE_
 237 #undef  HAVE___CTYPE
 238 #undef  HAVE__CTYPE__
 239 #undef  HAVE__CTYPE
 240 #undef  HAVE__LOCP
 241
 242 #endif
 243
 244 /*
 245 \f */
 246
 247 #ifdef  _LIBC
 248
 249 /* The zic and zdump programs need these definitions.  */
 250
 251 #define HAVE_STRERROR   1
 252
 253 /* The locale code needs these definitions.  */
 254
 255 #define HAVE_REGEX 1
 256
 257 #endif