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 ELF, which supports weak symbols.
  12    This implies HAVE_ASM_WEAK_DIRECTIVE and NO_UNDERSCORES; set by
  13    --with-elf.  */
  14 #undef  HAVE_ELF
  15
  16 /* Define if building with SELinux support.  Set by --with-selinux.  */
  17 #undef  HAVE_SELINUX
  18
  19 /* Defined if building with SELinux support & audit libs are detected. */
  20 #undef  HAVE_LIBAUDIT
  21
  22 /* Define if using XCOFF. Set by --with-xcoff.  */
  23 #undef  HAVE_XCOFF
  24
  25 /* Define if C symbols are asm symbols.  Don't define if C symbols
  26    have a `_' prepended to make the asm symbol.  */
  27 #undef  NO_UNDERSCORES
  28
  29 /* Define if weak symbols are available via the `.weak' directive.  */
  30 #undef  HAVE_ASM_WEAK_DIRECTIVE
  31
  32 /* Define if weak symbols are available via the `.weakext' directive.  */
  33 #undef  HAVE_ASM_WEAKEXT_DIRECTIVE
  34
  35 /* Define if CFI directives are available.  */
  36 #undef  HAVE_ASM_CFI_DIRECTIVES
  37
  38 /* Define to the assembler line separator character for multiple
  39    assembler instructions per line.  Default is `;'  */
  40 #undef ASM_LINE_SEP
  41
  42 /* Define if not using ELF, but `.init' and `.fini' sections are available.  */
  43 #undef  HAVE_INITFINI
  44
  45 /* Define if __attribute__((section("foo"))) puts quotes around foo.  */
  46 #undef  HAVE_SECTION_QUOTES
  47
  48 /* Define if the assembler supports the `.set' directive.  */
  49 #undef  HAVE_ASM_SET_DIRECTIVE
  50
  51 /* Define to the name of the assembler's directive for
  52    declaring a symbol global (default `.globl').  */
  53 #undef  ASM_GLOBAL_DIRECTIVE
  54
  55 /* Define to the prefix before `object' or `function' in the
  56    assembler's `.type' directive, if it has one.  */
  57 #undef  ASM_TYPE_DIRECTIVE_PREFIX
  58
  59 /* Define a symbol_name as a global .symbol_name for ld.  */
  60 #undef  HAVE_ASM_GLOBAL_DOT_NAME
  61
  62 /* On powerpc64, use overlapping .opd entries.  */
  63 #undef  USE_PPC64_OVERLAPPING_OPD
  64
  65 /* Define if the assembler generates debugging information directly.  */
  66 #undef  HAVE_CPP_ASM_DEBUGINFO
  67
  68 /* Define if _Unwind_Find_FDE should be exported from glibc.  */
  69 #undef  EXPORT_UNWIND_FIND_FDE
  70
  71 /* Define to use GNU libio instead of GNU stdio.
  72    This is defined by configure under --enable-libio.  */
  73 #undef  USE_IN_LIBIO
  74
  75 /* Define if using ELF and the assembler supports the `.previous'
  76    directive.  */
  77 #undef  HAVE_ASM_PREVIOUS_DIRECTIVE
  78
  79 /* Define if using ELF and the assembler supports the `.popsection'
  80    directive.  */
  81 #undef  HAVE_ASM_POPSECTION_DIRECTIVE
  82
  83 /* Define if versioning of the library is wanted.  */
  84 #undef  DO_VERSIONING
  85
  86 /* Defined to the oldest ABI we support, like 2.1.  */
  87 #undef GLIBC_OLDEST_ABI
  88
  89 /* Define if static NSS modules are wanted.  */
  90 #undef  DO_STATIC_NSS
  91
  92 /* Define if gcc uses DWARF2 unwind information for exception support.  */
  93 #undef  HAVE_DWARF2_UNWIND_INFO
  94
  95 /* Define if gcc uses DWARF2 unwind information for exception support
  96    with static variable. */
  97 #undef  HAVE_DWARF2_UNWIND_INFO_STATIC
  98
  99 /* Define if the compiler supports __builtin_expect.  */
 100 #undef  HAVE_BUILTIN_EXPECT
 101
 102 /* Define if the compiler supports __builtin_memset.  */
 103 #undef  HAVE_BUILTIN_MEMSET
 104
 105 /* Define if __asm () on built-in function's prototype causes redirection of
 106    the builtin.  */
 107 #undef  HAVE_BUILTIN_REDIRECTION
 108
 109 /* Define if the __thread keyword is supported.  */
 110 #undef HAVE___THREAD
 111
 112 /* Define if the compiler supports __attribute__((tls_model(""))).  */
 113 #undef HAVE_TLS_MODEL_ATTRIBUTE
 114
 115 /* Define if the regparm attribute shall be used for local functions
 116    (gcc on ix86 only).  */
 117 #undef  USE_REGPARMS
 118
 119 /* Defined on PowerPC if the GCC being used has a problem with clobbering
 120    certain registers (CR0, MQ, CTR, LR) in asm statements.  */
 121 #undef  BROKEN_PPC_ASM_CR0
 122
 123 /* Defined on SPARC if ld doesn't handle R_SPARC_WDISP22 against .hidden
 124    symbol.  sysdeps/sparc/sparc32/elf/configure.  */
 125 #undef  BROKEN_SPARC_WDISP22
 126
 127 /* Define if the linker supports the -z combreloc option.  */
 128 #undef  HAVE_Z_COMBRELOC
 129
 130 /* Define if the assembler supported .protected.  */
 131 #undef  HAVE_PROTECTED
 132
 133 /* Define if the assembler supported .hidden.  */
 134 #undef  HAVE_HIDDEN
 135
 136 /* Define if the compiler supports __attribute__ ((visibility (...))).  */
 137 #undef  HAVE_VISIBILITY_ATTRIBUTE
 138
 139 /* Define if the compiler doesn't support __attribute__ ((visibility (...)))
 140    together with __asm__ redirection properly.  */
 141 #undef  HAVE_BROKEN_VISIBILITY_ATTRIBUTE
 142
 143 /* Define if the compiler doesn't support __attribute__ ((alias (...)))
 144    together with __asm__ redirection properly.  */
 145 #undef  HAVE_BROKEN_ALIAS_ATTRIBUTE
 146
 147 /* Define if _rtld_local structure should be forced into .sdata section.  */
 148 #undef  HAVE_SDATA_SECTION
 149
 150 /* Define if binutils support TLS handling.  */
 151 #undef  HAVE_TLS_SUPPORT
 152
 153 /* Define if the compiler's exception support is based on libunwind.  */
 154 #undef  HAVE_CC_WITH_LIBUNWIND
 155
 156 /* Define if the access to static and hidden variables is position independent
 157    and does not need relocations.  */
 158 #undef  PI_STATIC_AND_HIDDEN
 159
 160 /* Define this to disable the `hidden_proto' et al macros in
 161    include/libc-symbols.h that avoid PLT slots in the shared objects.  */
 162 #undef  NO_HIDDEN
 163
 164
 165 /* Defined to some form of __attribute__ ((...)) if the compiler supports
 166    a different, more efficient calling convention.  */
 167 #if defined USE_REGPARMS && !defined PROF && !defined __BOUNDED_POINTERS__
 168 # define internal_function __attribute__ ((regparm (3), stdcall))
 169 #endif
 170
 171 /* Linux specific: minimum supported kernel version.  */
 172 #undef  __LINUX_KERNEL_VERSION
 173
 174 /* Override abi-tags ABI version if necessary.  */
 175 #undef  __ABI_TAG_VERSION
 176
 177 /* bash 2.0 introduced the _XXX_GNU_nonoption_argv_flags_ variable to help
 178    getopt determine whether a parameter is a flag or not.  This features
 179    was disabled later since it caused trouble.  We are by default therefore
 180    disabling the support as well.  */
 181 #undef USE_NONOPTION_FLAGS
 182
 183 /* Mach/Hurd specific: define if mig supports the `retcode' keyword.  */
 184 #undef  HAVE_MIG_RETCODE
 185
 186 /* Mach specific: define if the `host_page_size' RPC is available.  */
 187 #undef  HAVE_HOST_PAGE_SIZE
 188
 189 /* Mach/i386 specific: define if the `i386_io_perm_*' RPCs are available.  */
 190 #undef  HAVE_I386_IO_PERM_MODIFY
 191
 192 /* Mach/i386 specific: define if the `i386_set_gdt' RPC is available.  */
 193 #undef  HAVE_I386_SET_GDT
 194
 195 /* Defined if forced unwind support is available.  */
 196 #undef  HAVE_FORCED_UNWIND
 197
 198 /* Defined if the linker supports the -z relro option.  */
 199 #undef HAVE_Z_RELRO
 200
 201 /* Defined of libidn is available.  */
 202 #undef HAVE_LIBIDN
 203
 204 /* Define if inlined system calls are available.  */
 205 #undef HAVE_INLINED_SYSCALLS
 206
 207 /* Define if your assembler and linker support R_PPC_REL16* relocs.  */
 208 #undef HAVE_ASM_PPC_REL16
 209
 210 /* Define if __stack_chk_guard canary should be randomized at program startup.  */
 211 #undef ENABLE_STACKGUARD_RANDOMIZE
 212
 213 /*
 214 \f */
 215
 216 #ifndef _LIBC
 217
 218 /* These symbols might be defined by some sysdeps configures.
 219    They are used only in miscellaneous generator programs, not
 220    in compiling libc itself.   */
 221
 222 /* sysdeps/generic/configure.in */
 223 #undef  HAVE_PSIGNAL
 224
 225 /* sysdeps/unix/configure.in */
 226 #undef  HAVE_STRERROR
 227
 228 /* sysdeps/unix/common/configure.in */
 229 #undef  HAVE_SYS_SIGLIST
 230 #undef  HAVE__SYS_SIGLIST
 231 #undef  HAVE__CTYPE_
 232 #undef  HAVE___CTYPE_
 233 #undef  HAVE___CTYPE
 234 #undef  HAVE__CTYPE__
 235 #undef  HAVE__CTYPE
 236 #undef  HAVE__LOCP
 237
 238 #endif
 239
 240 /*
 241 \f */
 242
 243 #ifdef  _LIBC
 244
 245 /* The zic and zdump programs need these definitions.  */
 246
 247 #define HAVE_STRERROR   1
 248
 249 /* The locale code needs these definitions.  */
 250
 251 #define HAVE_REGEX 1
 252
 253 #endif