Building the bundled libgd library into PHP causes symbol namespace
pollution; if any other Apache modules link a different version of libgd
into the Apache process they may instead pick up symbols from the PHP
libgd, and segfault randomly. (One of our users saw this when using
mod_perl with Perl::GD)
The patch below (which applies to the 4.3 branch) fixes this with the
same method used for the bundled expat and pcre libraries. The symbol
list is painful to create because libgd doesn't consistently use a
particular symbol prefix: I used the attached script after building a
shared gd extension, as follows:
nm -D .libs/gd.so | find-gdsyms.sh > syms.h
Index: main/php_compat.h
RCS file: /repository/php-src/main/php_compat.h,v
retrieving revision 1.11.4.5
diff -u -r1.11.4.5 php_compat.h
--- main/php_compat.h 9 Aug 2003 14:26:40 -0000 1.11.4.5
+++ main/php_compat.h 16 Jul 2004 16:22:20 -0000
@@ -107,6 +107,185 @@
#define XML_ParserReset php_XML_ParserReset
#endif
+#ifdef HAVE_GD_BUNDLED
+#define any2eucjp php_gd_any2eucjp
+#define createwbmp php_gd_createwbmp
+#define empty_output_buffer php_gd_empty_output_buffer
+#define fill_input_buffer php_gd_fill_input_buffer
+#define freewbmp php_gd_freewbmp
+#define gdAlphaBlend php_gd_gdAlphaBlend
+#define gdCompareInt php_gd_gdCompareInt
+#define gdCosT php_gd_gdCosT
+#define gdDPExtractData php_gd_gdDPExtractData
+#define gdFontGetGiant php_gd_gdFontGetGiant
+#define gdFontGetLarge php_gd_gdFontGetLarge
+#define gdFontGetMediumBold php_gd_gdFontGetMediumBold
+#define gdFontGetSmall php_gd_gdFontGetSmall
+#define gdFontGetTiny php_gd_gdFontGetTiny
+#define gdFontGiant php_gd_gdFontGiant
+#define gdFontGiantData php_gd_gdFontGiantData
+#define gdFontGiantRep php_gd_gdFontGiantRep
+#define gdFontLarge php_gd_gdFontLarge
+#define gdFontLargeData php_gd_gdFontLargeData
+#define gdFontLargeRep php_gd_gdFontLargeRep
+#define gdFontMediumBold php_gd_gdFontMediumBold
+#define gdFontMediumBoldData php_gd_gdFontMediumBoldData
+#define gdFontMediumBoldRep php_gd_gdFontMediumBoldRep
+#define gdFontSmall php_gd_gdFontSmall
+#define gdFontSmallData php_gd_gdFontSmallData
+#define gdFontSmallRep php_gd_gdFontSmallRep
+#define gdFontTiny php_gd_gdFontTiny
+#define gdFontTinyData php_gd_gdFontTinyData
+#define gdFontTinyRep php_gd_gdFontTinyRep
+#define gdGetBuf php_gd_gdGetBuf
+#define gdGetByte php_gd_gdGetByte
+#define gdGetC php_gd_gdGetC
+#define _gdGetColors php_gd__gdGetColors
+#define gd_getin php_gd_gd_getin
+#define gdGetInt php_gd_gdGetInt
+#define gdGetWord php_gd_gdGetWord
+#define gdImageAABlend php_gd_gdImageAABlend
+#define gdImageAALine php_gd_gdImageAALine
+#define gdImageAlphaBlending php_gd_gdImageAlphaBlending
+#define gdImageAntialias php_gd_gdImageAntialias
+#define gdImageArc php_gd_gdImageArc
+#define gdImageChar php_gd_gdImageChar
+#define gdImageCharUp php_gd_gdImageCharUp
+#define gdImageColorAllocate php_gd_gdImageColorAllocate
+#define gdImageColorAllocateAlpha php_gd_gdImageColorAllocateAlpha
+#define gdImageColorClosest php_gd_gdImageColorClosest
+#define gdImageColorClosestAlpha php_gd_gdImageColorClosestAlpha
+#define gdImageColorClosestHWB php_gd_gdImageColorClosestHWB
+#define gdImageColorDeallocate php_gd_gdImageColorDeallocate
+#define gdImageColorExact php_gd_gdImageColorExact
+#define gdImageColorExactAlpha php_gd_gdImageColorExactAlpha
+#define gdImageColorMatch php_gd_gdImageColorMatch
+#define gdImageColorResolve php_gd_gdImageColorResolve
+#define gdImageColorResolveAlpha php_gd_gdImageColorResolveAlpha
+#define gdImageColorTransparent php_gd_gdImageColorTransparent
+#define gdImageCompare php_gd_gdImageCompare
+#define gdImageCopy php_gd_gdImageCopy
+#define gdImageCopyMerge php_gd_gdImageCopyMerge
+#define gdImageCopyMergeGray php_gd_gdImageCopyMergeGray
+#define gdImageCopyResampled php_gd_gdImageCopyResampled
+#define gdImageCopyResized php_gd_gdImageCopyResized
+#define gdImageCreate php_gd_gdImageCreate
+#define gdImageCreateFromGd php_gd_gdImageCreateFromGd
+#define gdImageCreateFromGd2 php_gd_gdImageCreateFromGd2
+#define gdImageCreateFromGd2Ctx php_gd_gdImageCreateFromGd2Ctx
+#define gdImageCreateFromGd2Part php_gd_gdImageCreateFromGd2Part
+#define gdImageCreateFromGd2PartCtx php_gd_gdImageCreateFromGd2PartCtx
+#define gdImageCreateFromGd2PartPtr php_gd_gdImageCreateFromGd2PartPtr
+#define gdImageCreateFromGd2Ptr php_gd_gdImageCreateFromGd2Ptr
+#define gdImageCreateFromGdCtx php_gd_gdImageCreateFromGdCtx
+#define gdImageCreateFromGdPtr php_gd_gdImageCreateFromGdPtr
+#define gdImageCreateFromGif php_gd_gdImageCreateFromGif
+#define gdImageCreateFromGifCtx php_gd_gdImageCreateFromGifCtx
+#define gdImageCreateFromGifSource php_gd_gdImageCreateFromGifSource
+#define gdImageCreateFromJpeg php_gd_gdImageCreateFromJpeg
+#define gdImageCreateFromJpegCtx php_gd_gdImageCreateFromJpegCtx
+#define gdImageCreateFromJpegPtr php_gd_gdImageCreateFromJpegPtr
+#define gdImageCreateFromPng php_gd_gdImageCreateFromPng
+#define gdImageCreateFromPngCtx php_gd_gdImageCreateFromPngCtx
+#define gdImageCreateFromPngPtr php_gd_gdImageCreateFromPngPtr
+#define gdImageCreateFromPngSource php_gd_gdImageCreateFromPngSource
+#define gdImageCreateFromWBMP php_gd_gdImageCreateFromWBMP
+#define gdImageCreateFromWBMPCtx php_gd_gdImageCreateFromWBMPCtx
+#define gdImageCreateFromWBMPPtr php_gd_gdImageCreateFromWBMPPtr
+#define gdImageCreateFromXbm php_gd_gdImageCreateFromXbm
+#define gdImageCreateTrueColor php_gd_gdImageCreateTrueColor
+#define gdImageDashedLine php_gd_gdImageDashedLine
+#define gdImageDestroy php_gd_gdImageDestroy
+#define gdImageEllipse php_gd_gdImageEllipse
+#define gdImageFill php_gd_gdImageFill
+#define gdImageFilledArc php_gd_gdImageFilledArc
+#define gdImageFilledEllipse php_gd_gdImageFilledEllipse
+#define gdImageFilledPolygon php_gd_gdImageFilledPolygon
+#define gdImageFilledRectangle php_gd_gdImageFilledRectangle
+#define _gdImageFillTiled php_gd__gdImageFillTiled
+#define gdImageFillToBorder php_gd_gdImageFillToBorder
+#define gdImageGd php_gd_gdImageGd
+#define gdImageGd2 php_gd_gdImageGd2
+#define gdImageGd2Ptr php_gd_gdImageGd2Ptr
+#define gdImageGdPtr php_gd_gdImageGdPtr
+#define gdImageGetClip php_gd_gdImageGetClip
+#define gdImageGetPixel php_gd_gdImageGetPixel
+#define gdImageGetTrueColorPixel php_gd_gdImageGetTrueColorPixel
+#define gdImageInterlace php_gd_gdImageInterlace
+#define gdImageJpeg php_gd_gdImageJpeg
+#define gdImageJpegCtx php_gd_gdImageJpegCtx
+#define gdImageJpegPtr php_gd_gdImageJpegPtr
+#define gdImageLine php_gd_gdImageLine
+#define gdImagePaletteCopy php_gd_gdImagePaletteCopy
+#define gdImagePng php_gd_gdImagePng
+#define gdImagePngCtx php_gd_gdImagePngCtx
+#define gdImagePngCtxEx php_gd_gdImagePngCtxEx
+#define gdImagePngEx php_gd_gdImagePngEx
+#define gdImagePngPtr php_gd_gdImagePngPtr
+#define gdImagePngPtrEx php_gd_gdImagePngPtrEx
+#define gdImagePngToSink php_gd_gdImagePngToSink
+#define gdImagePolygon php_gd_gdImagePolygon
+#define gdImageRectangle php_gd_gdImageRectangle
+#define gdImageRotate php_gd_gdImageRotate
+#define gdImageRotate180 php_gd_gdImageRotate180
+#define gdImageRotate270 php_gd_gdImageRotate270
+#define gdImageRotate45 php_gd_gdImageRotate45
+#define gdImageRotate90 php_gd_gdImageRotate90
+#define gdImageSaveAlpha php_gd_gdImageSaveAlpha
+#define gdImageSetAntiAliased php_gd_gdImageSetAntiAliased
+#define gdImageSetAntiAliasedDontBlend php_gd_gdImageSetAntiAliasedDontBlend
+#define gdImageSetBrush php_gd_gdImageSetBrush
+#define gdImageSetClip php_gd_gdImageSetClip
+#define gdImageSetPixel php_gd_gdImageSetPixel
+#define gdImageSetStyle php_gd_gdImageSetStyle
+#define gdImageSetThickness php_gd_gdImageSetThickness
+#define gdImageSetTile php_gd_gdImageSetTile
+#define gdImageSkewX php_gd_gdImageSkewX
+#define gdImageSkewY php_gd_gdImageSkewY
+#define gdImageString php_gd_gdImageString
+#define gdImageString16 php_gd_gdImageString16
+#define gdImageStringFT php_gd_gdImageStringFT
+#define gdImageStringFTEx php_gd_gdImageStringFTEx
+#define gdImageStringTTF php_gd_gdImageStringTTF
+#define gdImageStringUp php_gd_gdImageStringUp
+#define gdImageStringUp16 php_gd_gdImageStringUp16
+#define gdImageTrueColorToPalette php_gd_gdImageTrueColorToPalette
+#define gdImageWBMP php_gd_gdImageWBMP
+#define gdImageWBMPCtx php_gd_gdImageWBMPCtx
+#define gdImageWBMPPtr php_gd_gdImageWBMPPtr
+#define gdNewDynamicCtx php_gd_gdNewDynamicCtx
+#define gdNewDynamicCtxEx php_gd_gdNewDynamicCtxEx
+#define gdNewFileCtx php_gd_gdNewFileCtx
+#define gdNewSSCtx php_gd_gdNewSSCtx
+#define gdPutBuf php_gd_gdPutBuf
+#define gdPutC php_gd_gdPutC
+#define _gdPutColors php_gd__gdPutColors
+#define gdPutInt php_gd_gdPutInt
+#define gd_putout php_gd_gd_putout
+#define gdPutWord php_gd_gdPutWord
+#define gdSeek php_gd_gdSeek
+#define gdSinT php_gd_gdSinT
+#define gd_strtok_r php_gd_gd_strtok_r
+#define gdTell php_gd_gdTell
+#define getmbi php_gd_getmbi
+#define init_destination php_gd_init_destination
+#define init_source php_gd_init_source
+#define jpeg_gdIOCtx_dest php_gd_jpeg_gdIOCtx_dest
+#define jpeg_gdIOCtx_src php_gd_jpeg_gdIOCtx_src
+#define lsqrt php_gd_lsqrt
+#define printwbmp php_gd_printwbmp
+#define Putchar php_gd_Putchar
+#define putmbi php_gd_putmbi
+#define Putword php_gd_Putword
+#define readwbmp php_gd_readwbmp
+#define skipheader php_gd_skipheader
+#define skip_input_data php_gd_skip_input_data
+#define term_destination php_gd_term_destination
+#define term_source php_gd_term_source
+#define writewbmp php_gd_writewbmp
+#define ZeroDataBlock php_gd_ZeroDataBlock
+#endif /* HAVE_GD_BUNDLED */
#ifdef PHP_EXPORTS
#define PCRE_STATIC
#define XML_STATIC
Index: ext/gd/libgd/gd.h
RCS file: /repository/php-src/ext/gd/libgd/gd.h,v
retrieving revision 1.7.2.10
diff -u -r1.7.2.10 gd.h
--- ext/gd/libgd/gd.h 10 May 2004 02:19:22 -0000 1.7.2.10
+++ ext/gd/libgd/gd.h 16 Jul 2004 16:22:20 -0000
@@ -5,6 +5,8 @@
extern "C" {
#endif
+#include "php_compat.h"
#ifndef WIN32
/* default fontpath for unix systems */
#define DEFAULT_FONTPATH "/usr/X11R6/lib/X11/fonts/TrueType:/usr/X11R6/lib/X11/fonts/truetype:/usr/X11R6/lib/X11/fonts/TTF:/usr/share/fonts/TrueType:/usr/share/fonts/truetype:/usr/openwin/lib/X11/fonts/TrueType:/usr/X11R6/lib/X11/fonts/Type1:."
Index: ext/gd/libgd/gdtables.c
RCS file: /repository/php-src/ext/gd/libgd/gdtables.c,v
retrieving revision 1.1
diff -u -r1.1 gdtables.c
--- ext/gd/libgd/gdtables.c 13 Apr 2002 02:03:09 -0000 1.1
+++ ext/gd/libgd/gdtables.c 16 Jul 2004 16:22:20 -0000
@@ -1,4 +1,6 @@
+#include "php_compat.h"
int gdCosT[] =
{
1024,
Index: ext/gd/libgd/wbmp.h
RCS file: /repository/php-src/ext/gd/libgd/wbmp.h,v
retrieving revision 1.1
diff -u -r1.1 wbmp.h
--- ext/gd/libgd/wbmp.h 13 Apr 2002 02:03:09 -0000 1.1
+++ ext/gd/libgd/wbmp.h 16 Jul 2004 16:22:20 -0000
@@ -12,6 +12,7 @@
#ifndef __WBMP_H
#define __WBMP_H 1
+#include "php_compat.h"
/* WBMP struct
**