Since we're only using it on Linux now, just require poppler as a system dependency.

third_party/poppler/config/linux/poppler-config.h

Index: third_party/poppler/config/linux/poppler-config.h
diff --git a/third_party/poppler/config/linux/poppler-config.h b/third_party/poppler/config/linux/poppler-config.h
deleted file mode 100644
index eda28fba5dde2b2691afb0759b22ea8fbce1de0c..0000000000000000000000000000000000000000
--- a/third_party/poppler/config/linux/poppler-config.h
+++ /dev/null
@@ -1,174 +0,0 @@
-/* poppler/poppler-config.h.  Generated from poppler-config.h.in by configure.  */
-//================================================= -*- mode: c++ -*- ====
-//
-// poppler-config.h
-//
-// Copyright 1996-2011 Glyph & Cog, LLC
-//
-//========================================================================
-
-#ifndef POPPLER_CONFIG_H
-#define POPPLER_CONFIG_H
-
-// We duplicate some of the config.h #define's here since they are
-// used in some of the header files we install.  The #ifndef/#endif
-// around #undef look odd, but it's to silence warnings about
-// redefining those symbols.
-
-/* Defines the poppler version. */
-#ifndef POPPLER_VERSION
-#define POPPLER_VERSION "0.22.5"
-#endif
-
-/* Enable multithreading support. */
-#ifndef MULTITHREADED
-#define MULTITHREADED 1
-#endif
-
-/* Use fixedpoint. */
-#ifndef USE_FIXEDPOINT
-/* #undef USE_FIXEDPOINT */
-#endif
-
-/* Use single precision arithmetic in the Splash backend */
-#ifndef USE_FLOAT
-/* #undef USE_FLOAT */
-#endif
-
-/* Include support for OPI comments. */
-#ifndef OPI_SUPPORT
-#define OPI_SUPPORT 1
-#endif
-
-/* Enable word list support. */
-#ifndef TEXTOUT_WORD_LIST
-#define TEXTOUT_WORD_LIST 1
-#endif
-
-/* Support for curl is compiled in. */
-#ifndef POPPLER_HAS_CURL_SUPPORT
-/* #undef POPPLER_HAS_CURL_SUPPORT */
-#endif
-
-/* Use libjpeg instead of builtin jpeg decoder. */
-#ifndef ENABLE_LIBJPEG
-/* #undef ENABLE_LIBJPEG */
-#endif
-
-/* Build against libtiff. */
-#ifndef ENABLE_LIBTIFF
-/* #undef ENABLE_LIBTIFF */
-#endif
-
-/* Build against libpng. */
-#ifndef ENABLE_LIBPNG
-/* #undef ENABLE_LIBPNG */
-#endif
-
-/* Use zlib instead of builtin zlib decoder. */
-#ifndef ENABLE_ZLIB
-/* #undef ENABLE_ZLIB */
-#endif
-
-/* Define to 1 if you have the <dirent.h> header file, and it defines `DIR'.
-   */
-#ifndef HAVE_DIRENT_H
-#define HAVE_DIRENT_H 1
-#endif
-
-/* Defines if gettimeofday is available on your system */
-#ifndef HAVE_GETTIMEOFDAY
-#define HAVE_GETTIMEOFDAY 1
-#endif
-
-/* Define to 1 if you have the <ndir.h> header file, and it defines `DIR'. */
-#ifndef HAVE_NDIR_H
-/* #undef HAVE_NDIR_H */
-#endif
-
-/* Define to 1 if you have the <sys/dir.h> header file, and it defines `DIR'.
-   */
-#ifndef HAVE_SYS_DIR_H
-/* #undef HAVE_SYS_DIR_H */
-#endif
-
-/* Define to 1 if you have the <sys/ndir.h> header file, and it defines `DIR'.
-   */
-#ifndef HAVE_SYS_NDIR_H
-/* #undef HAVE_SYS_NDIR_H */
-#endif
-
-/* Have FreeType2 include files */
-#ifndef HAVE_FREETYPE_H
-#define HAVE_FREETYPE_H 1
-#endif
-
-/* Defines if use cms */
-#ifndef USE_CMS
-/* #undef USE_CMS */
-#endif
-
-// Also, there are preprocessor symbols in the header files
-// that are used but never defined when building poppler using configure
-// or cmake: DISABLE_OUTLINE, DEBUG_MEM, SPLASH_CMYK, HAVE_T1LIB_H,
-// ENABLE_PLUGINS, DEBUG_FORMS, HAVE_FREETYPE_FREETYPE_H
-
-//------------------------------------------------------------------------
-// version
-//------------------------------------------------------------------------
-
-// copyright notice
-#define popplerCopyright "Copyright 2005-2013 The Poppler Developers - http://poppler.freedesktop.org"
-#define xpdfCopyright "Copyright 1996-2011 Glyph & Cog, LLC"
-
-//------------------------------------------------------------------------
-// popen
-//------------------------------------------------------------------------
-
-#if defined(_MSC_VER) || defined(__BORLANDC__)
-#define popen _popen
-#define pclose _pclose
-#endif
-
-#if defined(VMS) || defined(VMCMS) || defined(DOS) || defined(OS2) || defined(__EMX__) || defined(_WIN32) || defined(__DJGPP__) || defined(MACOS)
-#define POPEN_READ_MODE "rb"
-#else
-#define POPEN_READ_MODE "r"
-#endif
-
-//------------------------------------------------------------------------
-// Win32 stuff
-//------------------------------------------------------------------------
-
-#if defined(_WIN32) && !defined(_MSC_VER)
-#include <windef.h>
-#else
-#define CDECL
-#endif
-
-#if defined(_WIN32)
-#ifdef _MSC_VER
-#define strtok_r strtok_s
-#elif __MINGW32__ && !defined(__WINPTHREADS_VERSION)
-char * strtok_r (char *s, const char *delim, char **save_ptr);
-#endif
-#endif
-
-//------------------------------------------------------------------------
-// Compiler
-//------------------------------------------------------------------------
-
-#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ > 4)
-#define GCC_PRINTF_FORMAT(fmt_index, va_index) \
-	__attribute__((__format__(__printf__, fmt_index, va_index)))
-#else
-#define GCC_PRINTF_FORMAT(fmt_index, va_index)
-#endif
-
-#if defined(_MSC_VER)
-#define fmax(a, b) max(a, b)
-#define fmin(a, b) min(a, b)
-#endif
-
-
-#endif /* POPPLER_CONFIG_H */