ZLIB_VERNUM isn't defined in some zlib versions, so this patch does a proper
linking test in autoconf to see whether deflateBound exists in zlib.
Signed-off-by: David Symonds <dsymonds@xxxxxxxxx>
---
Makefile | 6 ++++++
cache.h | 2 +-
config.mak.in | 1 +
configure.ac | 20 ++++++++++++++++++++
4 files changed, 28 insertions(+), 1 deletions(-)
diff --git a/Makefile b/Makefile
index 1a81ef1..c8bcd1d 100644
--- a/Makefile
+++ b/Makefile
@@ -98,6 +98,8 @@ all::
# Define OLD_ICONV if your library has an old iconv(), where the second
# (input buffer pointer) parameter is declared with type (const char **).
#
+# Define NO_DEFLATE_BOUND if your zlib does not have deflateBound.
+#
# Define NO_R_TO_GCC_LINKER if your gcc does not like "-R/path/lib"
# that tells runtime paths to dynamic libraries;
# "-Wl,-rpath=/path/lib" is used instead.
@@ -663,6 +665,10 @@ ifdef OLD_ICONV
BASIC_CFLAGS += -DOLD_ICONV
endif
+ifdef NO_DEFLATE_BOUND
+ BASIC_CFLAGS += -DNO_DEFLATE_BOUND
+endif
+
ifdef PPC_SHA1
SHA1_HEADER = "ppc/sha1.h"
LIB_OBJS += ppc/sha1.o ppc/sha1ppc.o
diff --git a/cache.h b/cache.h
index 830d2e0..a3b1a26 100644
--- a/cache.h
+++ b/cache.h
@@ -7,7 +7,7 @@
#include SHA1_HEADER
#include <zlib.h>
-#if ZLIB_VERNUM < 0x1200
+#if defined(NO_DEFLATE_BOUND)
#define deflateBound(c,s) ((s) + (((s) + 7) >> 3) + (((s) + 63) >> 6) + 11)
#endif
diff --git a/config.mak.in b/config.mak.in
index a3032e3..776b805 100644
--- a/config.mak.in
+++ b/config.mak.in
@@ -38,3 +38,4 @@ NO_STRCASESTR=@NO_STRCASESTR@
NO_STRLCPY=@NO_STRLCPY@
NO_SETENV=@NO_SETENV@
NO_ICONV=@NO_ICONV@
+NO_DEFLATE_BOUND=@NO_DEFLATE_BOUND@
diff --git a/configure.ac b/configure.ac
index ed7cc89..ab516db 100644
--- a/configure.ac
+++ b/configure.ac
@@ -182,6 +182,26 @@ AC_SUBST(NEEDS_LIBICONV)
AC_SUBST(NO_ICONV)
test -n "$NEEDS_LIBICONV" && LIBS="$LIBS -liconv"
#
+# Define NO_DEFLATE_BOUND if deflateBound is missing from zlib.
+AC_DEFUN([ZLIBTEST_SRC], [
+#include <zlib.h>
+
+int main(void)
+{
+ deflateBound(0, 0);
+ return 0;
+}
+])
+AC_MSG_CHECKING([for deflateBound in -lz])
+old_LIBS="$LIBS"
+LIBS="$LIBS -lz"
+AC_LINK_IFELSE(ZLIBTEST_SRC,
+ [AC_MSG_RESULT([yes])],
+ [AC_MSG_RESULT([no])
+ NO_DEFLATE_BOUND=yes])
+LIBS="$old_LIBS"
+AC_SUBST(NO_DEFLATE_BOUND)
+#
# Define NEEDS_SOCKET if linking with libc is not enough (SunOS,
# Patrick Mauritz).
AC_CHECK_LIB([c], [socket],
--
1.5.3.1
-
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