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use system zlib under Mac

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@18247 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin 2002-12-15 22:50:42 +00:00
parent 34bed6d9ec
commit d775acfa77
2 changed files with 513 additions and 495 deletions
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932
configure vendored
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76
configure.in
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@ -1697,41 +1697,53 @@ if test "$wxUSE_ZLIB" != "no" ; then
AC_DEFINE(wxUSE_ZLIB)
if test "$wxUSE_ZLIB" = "sys" -o "$wxUSE_ZLIB" = "yes" ; then
dnl we have troubles with ancient zlib versions (e.g. 1.0.4 is known
dnl to not work) and although I don't know which is the minimal
dnl required version it's safer to test for 1.1.4 as it fixes a
dnl security problem in 1.1.3 -- and hopefully nobody has anything
dnl more ancient (1.1.3 was released in July 1998) anyow
AC_CACHE_CHECK([for zlib.h >= 1.1.4], ac_cv_header_zlib_h,
AC_TRY_RUN(
[
dnl zlib.h defines ZLIB_VERSION="x.y.z"
#include <zlib.h>
#include <stdio.h>
dnl don't test for zlib under Mac -- its verson there is 1.1.3 but we
dnl should still use it because hopefully (can someone confirm this?)
dnl Apple did fix the security problem in it and not using the system
dnl library results in a whole bunch of warnings when linking with
dnl Carbon framework
if test "$USE_DARWIN" = 1; then
system_zlib_h_ok="yes"
else
dnl we have troubles with ancient zlib versions (e.g. 1.0.4 is
dnl known to not work) and although I don't know which is
dnl the minimal required version it's safer to test for 1.1.4 as
dnl it fixes a security problem in 1.1.3 -- and hopefully nobody
dnl has anything more ancient (1.1.3 was released in July 1998)
dnl anyhow
AC_CACHE_CHECK([for zlib.h >= 1.1.4], ac_cv_header_zlib_h,
AC_TRY_RUN(
[
dnl zlib.h defines ZLIB_VERSION="x.y.z"
#include <zlib.h>
#include <stdio.h>
dnl don't use the brackets as quotes, we need them
changequote(,)
int main()
{
FILE *f=fopen("conftestval", "w");
if (!f) exit(1);
fprintf(f, "%s",
ZLIB_VERSION[0] == '1' &&
(ZLIB_VERSION[2] > '1' ||
(ZLIB_VERSION[2] == '1' &&
ZLIB_VERSION[4] >= '4')) ? "yes" : "no");
exit(0);
}
changequote([,])
],
ac_cv_header_zlib_h=`cat conftestval`,
ac_cv_header_zlib_h=no,
dnl cross-compiling: test if we have any zlib.h
AC_CHECK_HEADER(zlib.h)
dnl don't use the brackets as quotes, we need them
changequote(,)
int main()
{
FILE *f=fopen("conftestval", "w");
if (!f) exit(1);
fprintf(f, "%s",
ZLIB_VERSION[0] == '1' &&
(ZLIB_VERSION[2] > '1' ||
(ZLIB_VERSION[2] == '1' &&
ZLIB_VERSION[4] >= '4')) ? "yes" : "no");
exit(0);
}
changequote([,])
],
ac_cv_header_zlib_h=`cat conftestval`,
ac_cv_header_zlib_h=no,
dnl cross-compiling: test if we have any zlib.h
AC_CHECK_HEADER(zlib.h)
)
)
)
if test "$ac_cv_header_zlib_h" = "yes"; then
system_zlib_h_ok=$ac_cv_header_zlib_h
fi
if test "$system_zlib_h_ok" = "yes"; then
AC_CHECK_LIB(z, deflate, ZLIB_LINK=" -lz")
fi