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Fix GH-14443: Cross-compiling with external GD library #14901

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1 change: 1 addition & 0 deletions NEWS
Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,7 @@ PHP NEWS
(nielsdos)
. Fixed OSS-Fuzz #69765. (nielsdos)
. Fixed bug GH-14741 (Segmentation fault in Zend/zend_types.h). (nielsdos)
. Fixed bug GH-14443 (Cross-compiling with external GD library). (Peter Kokot)

- Dom:
. Fixed bug GH-14702 (DOMDocument::xinclude() crash). (nielsdos)
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45 changes: 25 additions & 20 deletions ext/gd/config.m4
Original file line number Diff line number Diff line change
Expand Up @@ -147,43 +147,48 @@ dnl that gd defines "junk" versions of each gdImageCreateFromFoo function
dnl even when it does not support the Foo format. Those junk functions
dnl display a warning but eventually return normally, making a simple link
dnl or run test insufficient.
AC_DEFUN([PHP_GD_CHECK_FORMAT],[
old_LIBS="${LIBS}"
LIBS="${LIBS} ${GD_SHARED_LIBADD}"
old_CFLAGS="${CFLAGS}"
CFLAGS="${CFLAGS} ${GDLIB_CFLAGS}"
AC_MSG_CHECKING([for working gdImageCreateFrom$1 in libgd])
AC_LANG_PUSH([C])
AC_RUN_IFELSE([AC_LANG_SOURCE([
AC_DEFUN([PHP_GD_CHECK_FORMAT],
[AS_VAR_PUSHDEF([php_var], [php_cv_lib_gd_gdImageCreateFrom$1])
old_LIBS=$LIBS
LIBS="$LIBS $GD_SHARED_LIBADD"
old_CFLAGS=$CFLAGS
CFLAGS="$CFLAGS $GDLIB_CFLAGS"
AC_LANG_PUSH([C])
AC_CACHE_CHECK([for working gdImageCreateFrom$1 in libgd], [php_var],
[AC_RUN_IFELSE([AC_LANG_SOURCE([
#include <stdio.h>
#include <unistd.h>
#include <gd.h>

/* A custom gdErrorMethod */
void exit1(int priority, const char *format, va_list args) {
(void)priority;
(void)format;
(void)args;
_exit(1);
}

/* Override the default gd_error_method with one that
actually causes the program to return an error. */
int main(int argc, char** argv) {
int main(void) {
m4_if([$1],[Xpm],
[char* f = "test.xpm"],
[FILE* f = NULL]);
gdSetErrorMethod(exit1);
gdImagePtr p = gdImageCreateFrom$1(f);
(void)p;
return 0;
}])],[
AC_MSG_RESULT([yes])
AC_DEFINE($2, 1, [Does gdImageCreateFrom$1 work?])
],[
AC_MSG_RESULT([no])
],[
AC_MSG_RESULT([no])
])
AC_LANG_POP([C])
CFLAGS="${old_CFLAGS}"
LIBS="${old_LIBS}"
}])],
[AS_VAR_SET([php_var], [yes])],
[AS_VAR_SET([php_var], [no])],
[AS_VAR_SET([php_var], [no])])])
AS_VAR_IF([php_var], [yes],
[AC_DEFINE_UNQUOTED([$2], [1],
[Define to 1 if GD library has a working 'gdImageCreateFrom$1' function.])])
AC_LANG_POP([C])
CFLAGS=$old_CFLAGS
LIBS=$old_LIBS
AS_VAR_POPDEF([php_var])
])

AC_DEFUN([PHP_GD_CHECK_VERSION],[
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