config.h.in

按照官方的说法：Cairo is a vector graphics library with cross-device output support. 翻译过来

/* config.h.in.  Generated from configure.in by autoheader.  */

/* define if glitz backend can be tested against agl */
#undef CAIRO_CAN_TEST_GLITZ_AGL_SURFACE

/* define if glitz backend can be tested against egl */
#undef CAIRO_CAN_TEST_GLITZ_EGL_SURFACE

/* define if glitz backend can be tested against glx */
#undef CAIRO_CAN_TEST_GLITZ_GLX_SURFACE

/* define if glitz backend can be tested against wgl */
#undef CAIRO_CAN_TEST_GLITZ_WGL_SURFACE

/* Define to 1 if the PDF backend can be tested (need poppler and other
   dependencies for pdf2png) */
#undef CAIRO_CAN_TEST_PDF_SURFACE

/* Define to 1 if the SVG backend can be tested (need librsvg) */
#undef CAIRO_CAN_TEST_SVG_SURFACE

/* define in the extra test surface have been built into cairo for the test
   suite */
#undef CAIRO_HAS_TEST_SURFACES

/* Define to 1 if you have the <dlfcn.h> header file. */
#undef HAVE_DLFCN_H

/* Define to 1 if you have the `FcFini' function. */
#undef HAVE_FCFINI

/* FT_Bitmap_Size structure includes y_ppem field */
#undef HAVE_FT_BITMAP_SIZE_Y_PPEM

/* Define to 1 if you have the `FT_GlyphSlot_Embolden' function. */
#undef HAVE_FT_GLYPHSLOT_EMBOLDEN

/* Whether you have gcov */
#undef HAVE_GCOV

/* Define to 1 if you have the <inttypes.h> header file. */
#undef HAVE_INTTYPES_H

/* Define to 1 if you have the <memory.h> header file. */
#undef HAVE_MEMORY_H

/* Define to 1 if you have the <pthread.h> header file. */
#undef HAVE_PTHREAD_H

/* Define to 1 if you have the <stdint.h> header file. */
#undef HAVE_STDINT_H

/* Define to 1 if you have the <stdlib.h> header file. */
#undef HAVE_STDLIB_H

/* Define to 1 if you have the <strings.h> header file. */
#undef HAVE_STRINGS_H

/* Define to 1 if you have the <string.h> header file. */
#undef HAVE_STRING_H

/* Define to 1 if you have the <sys/int_types.h> header file. */
#undef HAVE_SYS_INT_TYPES_H

/* Define to 1 if you have the <sys/stat.h> header file. */
#undef HAVE_SYS_STAT_H

/* Define to 1 if you have the <sys/types.h> header file. */
#undef HAVE_SYS_TYPES_H

/* Define to 1 if the system has the type `uint128_t'. */
#undef HAVE_UINT128_T

/* Define to 1 if the system has the type `uint64_t'. */
#undef HAVE_UINT64_T

/* Define to 1 if you have the <unistd.h> header file. */
#undef HAVE_UNISTD_H

/* Define to 1 if you have the `vasnprintf' function. */
#undef HAVE_VASNPRINTF

/* Define to 1 if you have the `XrmFinalize' function. */
#undef HAVE_XRMFINALIZE

/* Name of package */
#undef PACKAGE

/* Define to the address where bug reports for this package should be sent. */
#undef PACKAGE_BUGREPORT

/* Define to the full name of this package. */
#undef PACKAGE_NAME

/* Define to the full name and version of this package. */
#undef PACKAGE_STRING

/* Define to the one symbol short name of this package. */
#undef PACKAGE_TARNAME

/* Define to the version of this package. */
#undef PACKAGE_VERSION

/* Define to 1 if you have the ANSI C header files. */
#undef STDC_HEADERS

/* use MMX compiler intrinsics */
#undef USE_MMX

/* Version number of package */
#undef VERSION

/* Define to 1 if your processor stores words with the most significant byte
   first (like Motorola and SPARC, unlike Intel and VAX). */
#undef WORDS_BIGENDIAN

/* Define to 1 if the X Window System is missing or not being used. */
#undef X_DISPLAY_MISSING