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 building with SELinux support.  Set by --with-selinux.  */
  22 #undef  HAVE_SELINUX
  23
  24 /* Defined if building with SELinux support & audit libs are detected. */
  25 #undef  HAVE_LIBAUDIT
  26
  27 /* Define if using XCOFF. Set by --with-xcoff.  */
  28 #undef  HAVE_XCOFF
  29
  30 /* Define if C symbols are asm symbols.  Don't define if C symbols
  31    have a `_' prepended to make the asm symbol.  */
  32 #undef  NO_UNDERSCORES
  33
  34 /* Define if weak symbols are available via the `.weak' directive.  */
  35 #undef  HAVE_ASM_WEAK_DIRECTIVE
  36
  37 /* Define if weak symbols are available via the `.weakext' directive.  */
  38 #undef  HAVE_ASM_WEAKEXT_DIRECTIVE
  39
  40 /* Define if CFI directives are available.  */
  41 #undef  HAVE_ASM_CFI_DIRECTIVES
  42
  43 /* Define to the assembler line separator character for multiple
  44    assembler instructions per line.  Default is `;'  */
  45 #undef ASM_LINE_SEP
  46
  47 /* Define if not using ELF, but `.init' and `.fini' sections are available.  */
  48 #undef  HAVE_INITFINI
  49
  50 /* Define if __attribute__((section("foo"))) puts quotes around foo.  */
  51 #undef  HAVE_SECTION_QUOTES
  52
  53 /* Define if using the GNU assembler, gas.  */
  54 #undef  HAVE_GNU_AS
  55
  56 /* Define if the assembler supports the `.set' directive.  */
  57 #undef  HAVE_ASM_SET_DIRECTIVE
  58
  59 /* Define to the name of the assembler's directive for
  60    declaring a symbol global (default `.globl').  */
  61 #undef  ASM_GLOBAL_DIRECTIVE
  62
  63 /* Define to the prefix before `object' or `function' in the
  64    assembler's `.type' directive, if it has one.  */
  65 #undef  ASM_TYPE_DIRECTIVE_PREFIX
  66
  67 /* Define a symbol_name as a global .symbol_name for ld.  */
  68 #undef  HAVE_ASM_GLOBAL_DOT_NAME
  69
  70 /* On powerpc64, use overlapping .opd entries.  */
  71 #undef  USE_PPC64_OVERLAPPING_OPD
  72
  73 /* Define if the assembler generates debugging information directly.  */
  74 #undef  HAVE_CPP_ASM_DEBUGINFO
  75
  76 /* Define if _Unwind_Find_FDE should be exported from glibc.  */
  77 #undef  EXPORT_UNWIND_FIND_FDE
  78
  79 /* Define to use GNU libio instead of GNU stdio.
  80    This is defined by configure under --enable-libio.  */
  81 #undef  USE_IN_LIBIO
  82
  83 /* Define if using ELF and the assembler supports the `.previous'
  84    directive.  */
  85 #undef  HAVE_ASM_PREVIOUS_DIRECTIVE
  86
  87 /* Define if using ELF and the assembler supports the `.popsection'
  88    directive.  */
  89 #undef  HAVE_ASM_POPSECTION_DIRECTIVE
  90
  91 /* Define if versioning of the library is wanted.  */
  92 #undef  DO_VERSIONING
  93
  94 /* Defined to the oldest ABI we support, like 2.1.  */
  95 #undef GLIBC_OLDEST_ABI
  96
  97 /* Define if static NSS modules are wanted.  */
  98 #undef  DO_STATIC_NSS
  99
 100 /* Define if gcc uses DWARF2 unwind information for exception support.  */
 101 #undef  HAVE_DWARF2_UNWIND_INFO
 102
 103 /* Define if gcc uses DWARF2 unwind information for exception support
 104    with static variable. */
 105 #undef  HAVE_DWARF2_UNWIND_INFO_STATIC
 106
 107 /* Define if the compiler supports __builtin_expect.  */
 108 #undef  HAVE_BUILTIN_EXPECT
 109
 110 /* Define if the compiler supports __builtin_memset.  */
 111 #undef  HAVE_BUILTIN_MEMSET
 112
 113 /* Define if __asm () on built-in function's prototype causes redirection of
 114    the builtin.  */
 115 #undef  HAVE_BUILTIN_REDIRECTION
 116
 117 /* Define if the __thread keyword is supported.  */
 118 #undef HAVE___THREAD
 119
 120 /* Define if the compiler supports __attribute__((tls_model(""))).  */
 121 #undef HAVE_TLS_MODEL_ATTRIBUTE
 122
 123 /* Define if the regparm attribute shall be used for local functions
 124    (gcc on ix86 only).  */
 125 #undef  USE_REGPARMS
 126
 127 /* Defined on PowerPC if the GCC being used has a problem with clobbering
 128    certain registers (CR0, MQ, CTR, LR) in asm statements.  */
 129 #undef  BROKEN_PPC_ASM_CR0
 130
 131 /* Defined on SPARC if ld doesn't handle R_SPARC_WDISP22 against .hidden
 132    symbol.  sysdeps/sparc/sparc32/elf/configure.  */
 133 #undef  BROKEN_SPARC_WDISP22
 134
 135 /* Define if the linker supports the -z combreloc option.  */
 136 #undef  HAVE_Z_COMBRELOC
 137
 138 /* Define if the assembler supported .protected.  */
 139 #undef  HAVE_PROTECTED
 140
 141 /* Define if the assembler supported .hidden.  */
 142 #undef  HAVE_HIDDEN
 143
 144 /* Define if the compiler supports __attribute__ ((visibility (...))).  */
 145 #undef  HAVE_VISIBILITY_ATTRIBUTE
 146
 147 /* Define if the compiler doesn't support __attribute__ ((visibility (...)))
 148    together with __asm__ redirection properly.  */
 149 #undef  HAVE_BROKEN_VISIBILITY_ATTRIBUTE
 150
 151 /* Define if the compiler doesn't support __attribute__ ((alias (...)))
 152    together with __asm__ redirection properly.  */
 153 #undef  HAVE_BROKEN_ALIAS_ATTRIBUTE
 154
 155 /* Define if _rtld_local structure should be forced into .sdata section.  */
 156 #undef  HAVE_SDATA_SECTION
 157
 158 /* Define if binutils support TLS handling.  */
 159 #undef  HAVE_TLS_SUPPORT
 160
 161 /* Define if the linker supports .preinit_array/.init_array/.fini_array
 162    sections.  */
 163 #undef  HAVE_INITFINI_ARRAY
 164
 165 /* Define if the compiler's exception support is based on libunwind.  */
 166 #undef  HAVE_CC_WITH_LIBUNWIND
 167
 168 /* Define if the access to static and hidden variables is position independent
 169    and does not need relocations.  */
 170 #undef  PI_STATIC_AND_HIDDEN
 171
 172 /* Define this to disable the `hidden_proto' et al macros in
 173    include/libc-symbols.h that avoid PLT slots in the shared objects.  */
 174 #undef  NO_HIDDEN
 175
 176
 177 /* Defined to some form of __attribute__ ((...)) if the compiler supports
 178    a different, more efficient calling convention.  */
 179 #if defined USE_REGPARMS && !defined PROF && !defined __BOUNDED_POINTERS__
 180 # define internal_function __attribute__ ((regparm (3), stdcall))
 181 #endif
 182
 183 /* Linux specific: minimum supported kernel version.  */
 184 #undef  __LINUX_KERNEL_VERSION
 185
 186 /* Override abi-tags ABI version if necessary.  */
 187 #undef  __ABI_TAG_VERSION
 188
 189 /* An extension in gcc 2.96 and up allows the subtraction of two
 190    local labels.  */
 191 #undef  HAVE_SUBTRACT_LOCAL_LABELS
 192
 193 /* bash 2.0 introduced the _XXX_GNU_nonoption_argv_flags_ variable to help
 194    getopt determine whether a parameter is a flag or not.  This features
 195    was disabled later since it caused trouble.  We are by default therefore
 196    disabling the support as well.  */
 197 #undef USE_NONOPTION_FLAGS
 198
 199 /* Mach/Hurd specific: define if mig supports the `retcode' keyword.  */
 200 #undef  HAVE_MIG_RETCODE
 201
 202 /* Mach specific: define if the `host_page_size' RPC is available.  */
 203 #undef  HAVE_HOST_PAGE_SIZE
 204
 205 /* Mach/i386 specific: define if the `i386_io_perm_*' RPCs are available.  */
 206 #undef  HAVE_I386_IO_PERM_MODIFY
 207
 208 /* Mach/i386 specific: define if the `i386_set_gdt' RPC is available.  */
 209 #undef  HAVE_I386_SET_GDT
 210
 211 /* Defined if forced unwind support is available.  */
 212 #undef  HAVE_FORCED_UNWIND
 213
 214 /* Defined if the linker supports the -z relro option.  */
 215 #undef HAVE_Z_RELRO
 216
 217 /* Defined of libidn is available.  */
 218 #undef HAVE_LIBIDN
 219
 220 /* Define if inlined system calls are available.  */
 221 #undef HAVE_INLINED_SYSCALLS
 222
 223 /* Define if your assembler and linker support R_PPC_REL16* relocs.  */
 224 #undef HAVE_ASM_PPC_REL16
 225
 226 /* Define if __stack_chk_guard canary should be randomized at program startup.  */
 227 #undef ENABLE_STACKGUARD_RANDOMIZE
 228
 229 /*
 230 \f */
 231
 232 #ifndef _LIBC
 233
 234 /* These symbols might be defined by some sysdeps configures.
 235    They are used only in miscellaneous generator programs, not
 236    in compiling libc itself.   */
 237
 238 /* sysdeps/generic/configure.in */
 239 #undef  HAVE_PSIGNAL
 240
 241 /* sysdeps/unix/configure.in */
 242 #undef  HAVE_STRERROR
 243
 244 /* sysdeps/unix/common/configure.in */
 245 #undef  HAVE_SYS_SIGLIST
 246 #undef  HAVE__SYS_SIGLIST
 247 #undef  HAVE__CTYPE_
 248 #undef  HAVE___CTYPE_
 249 #undef  HAVE___CTYPE
 250 #undef  HAVE__CTYPE__
 251 #undef  HAVE__CTYPE
 252 #undef  HAVE__LOCP
 253
 254 #endif
 255
 256 /*
 257 \f */
 258
 259 #ifdef  _LIBC
 260
 261 /* The zic and zdump programs need these definitions.  */
 262
 263 #define HAVE_STRERROR   1
 264
 265 /* The locale code needs these definitions.  */
 266
 267 #define HAVE_REGEX 1
 268
 269 #endif