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 a symbol_name as a global .symbol_name for ld.  */
  55 #undef  HAVE_ASM_GLOBAL_DOT_NAME
  56
  57 /* Define if _Unwind_Find_FDE should be exported from glibc.  */
  58 #undef  EXPORT_UNWIND_FIND_FDE
  59
  60 /* Define to use GNU libio instead of GNU stdio.
  61    This is defined by configure under --enable-libio.  */
  62 #undef  USE_IN_LIBIO
  63
  64 /* Define if using ELF and the assembler supports the `.previous'
  65    directive.  */
  66 #undef  HAVE_ASM_PREVIOUS_DIRECTIVE
  67
  68 /* Define if using ELF and the assembler supports the `.popsection'
  69    directive.  */
  70 #undef  HAVE_ASM_POPSECTION_DIRECTIVE
  71
  72 /* Define to the prefix Alpha/ELF GCC emits before ..ng symbols.  */
  73 #undef  ASM_ALPHA_NG_SYMBOL_PREFIX
  74
  75 /* Define if versioning of the library is wanted.  */
  76 #undef  DO_VERSIONING
  77
  78 /* Defined to the oldest ABI we support, like 2.1.  */
  79 #undef GLIBC_OLDEST_ABI
  80
  81 /* Define if static NSS modules are wanted.  */
  82 #undef  DO_STATIC_NSS
  83
  84 /* Define if gcc uses DWARF2 unwind information for exception support.  */
  85 #undef  HAVE_DWARF2_UNWIND_INFO
  86
  87 /* Define if gcc uses DWARF2 unwind information for exception support
  88    with static variable. */
  89 #undef  HAVE_DWARF2_UNWIND_INFO_STATIC
  90
  91 /* Define if the compiler supports __builtin_expect.  */
  92 #undef  HAVE_BUILTIN_EXPECT
  93
  94 /* Define if the compiler supports __builtin_memset.  */
  95 #undef  HAVE_BUILTIN_MEMSET
  96
  97 /* Define if the __thread keyword is supported.  */
  98 #undef HAVE___THREAD
  99
 100 /* Define if the regparm attribute shall be used for local functions
 101    (gcc on ix86 only).  */
 102 #undef  USE_REGPARMS
 103
 104 /* Defined on PowerPC if the GCC being used has a problem with clobbering
 105    certain registers (CR0, MQ, CTR, LR) in asm statements.  */
 106 #undef  BROKEN_PPC_ASM_CR0
 107
 108 /* Define if the linker supports the -z combreloc option.  */
 109 #undef  HAVE_Z_COMBRELOC
 110
 111 /* Define if the assembler supported .protected.  */
 112 #undef  HAVE_PROTECTED
 113
 114 /* Define if the assembler supported .hidden.  */
 115 #undef  HAVE_HIDDEN
 116
 117 /* Define if the compiler supports __attribute__ ((visibility (...))).  */
 118 #undef  HAVE_VISIBILITY_ATTRIBUTE
 119
 120 /* Define if the compiler doesn't support __attribute__ ((visibility (...)))
 121    together with __asm__ redirection properly.  */
 122 #undef  HAVE_BROKEN_VISIBILITY_ATTRIBUTE
 123
 124 /* Define if the compiler doesn't support __attribute__ ((alias (...)))
 125    together with __asm__ redirection properly.  */
 126 #undef  HAVE_BROKEN_ALIAS_ATTRIBUTE
 127
 128 /* Define if _rtld_local structure should be forced into .sdata section.  */
 129 #undef  HAVE_SDATA_SECTION
 130
 131 /* Define if binutils support TLS handling.  */
 132 #undef  HAVE_TLS_SUPPORT
 133
 134 /* Define if the linker supports .preinit_array/.init_array/.fini_array
 135    sections.  */
 136 #undef  HAVE_INITFINI_ARRAY
 137
 138
 139 /* Defined to some form of __attribute__ ((...)) if the compiler supports
 140    a different, more efficient calling convention.  */
 141 #if defined USE_REGPARMS && !defined PROF && !defined __BOUNDED_POINTERS__
 142 # define internal_function __attribute__ ((regparm (3), stdcall))
 143 #endif
 144
 145 /* Linux specific: minimum supported kernel version.  */
 146 #undef  __LINUX_KERNEL_VERSION
 147
 148 /* Override abi-tags ABI version if necessary.  */
 149 #undef  __ABI_TAG_VERSION
 150
 151 /* An extension in gcc 2.96 and up allows the subtraction of two
 152    local labels.  */
 153 #undef  HAVE_SUBTRACT_LOCAL_LABELS
 154
 155 /* bash 2.0 introduced the _XXX_GNU_nonoption_argv_flags_ variable to help
 156    getopt determine whether a parameter is a flag or not.  This features
 157    was disabled later since it caused trouble.  We are by default therefore
 158    disabling the support as well.  */
 159 #undef USE_NONOPTION_FLAGS
 160
 161 /* Mach/Hurd specific: define if mig supports the `retcode' keyword.  */
 162 #undef  HAVE_MIG_RETCODE
 163
 164 /* Mach specific: define if the `host_page_size' RPC is available.  */
 165 #undef  HAVE_HOST_PAGE_SIZE
 166
 167 /* Mach/i386 specific: define if the `i386_io_perm_*' RPCs are available.  */
 168 #undef  HAVE_I386_IO_PERM_MODIFY
 169
 170 /* Sparc64 specific: define if .dynamic section comes before .got for
 171    shared libs.  */
 172 #undef  SPARC64_DYNAMIC_BEFORE_GOT
 173
 174 /*
 175 \f */
 176
 177 #ifndef _LIBC
 178
 179 /* These symbols might be defined by some sysdeps configures.
 180    They are used only in miscellaneous generator programs, not
 181    in compiling libc itself.   */
 182
 183 /* sysdeps/generic/configure.in */
 184 #undef  HAVE_PSIGNAL
 185
 186 /* sysdeps/unix/configure.in */
 187 #undef  HAVE_STRERROR
 188
 189 /* sysdeps/unix/common/configure.in */
 190 #undef  HAVE_SYS_SIGLIST
 191 #undef  HAVE__SYS_SIGLIST
 192 #undef  HAVE__CTYPE_
 193 #undef  HAVE___CTYPE_
 194 #undef  HAVE___CTYPE
 195 #undef  HAVE__CTYPE__
 196 #undef  HAVE__CTYPE
 197 #undef  HAVE__LOCP
 198
 199 #endif
 200
 201 /*
 202 \f */
 203
 204 #ifdef  _LIBC
 205
 206 /* The zic and zdump programs need these definitions.  */
 207
 208 #define HAVE_STRERROR   1
 209
 210 /* The locale code needs these definitions.  */
 211
 212 #define HAVE_REGEX 1
 213
 214 #endif