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