Port the detection of zlib from the main autoconf system to the sample

[oota-llvm.git] / projects / sample / autoconf / configure.ac

diff --git a/projects/sample/autoconf/configure.ac b/projects/sample/autoconf/configure.ac
index 89527b3377e64e93cbe22d04f3beb3345c975dc7..46fd54909040df93ff06d7eee0da79e94b7b466d 100644 (file)
--- a/projects/sample/autoconf/configure.ac
+++ b/projects/sample/autoconf/configure.ac
@@ -535,6 +535,21 @@ case "$enableval" in
   *) AC_MSG_ERROR([Invalid setting for --enable-pthreads. Use "yes" or "no"]) ;;
 esac
 
+dnl Allow disablement of zlib
+AC_ARG_ENABLE(zlib,
+              AS_HELP_STRING([--enable-zlib],
+                             [Use zlib for compression/decompression if
+                              available (default is YES)]),,
+                              enableval=default)
+case "$enableval" in
+  yes) AC_SUBST(LLVM_ENABLE_ZLIB,[1]) ;;
+  no)  AC_SUBST(LLVM_ENABLE_ZLIB,[0]) ;;
+  default) AC_SUBST(LLVM_ENABLE_ZLIB,[1]) ;;
+  *) AC_MSG_ERROR([Invalid setting for --enable-zlib. Use "yes" or "no"]) ;;
+esac
+AC_DEFINE_UNQUOTED([LLVM_ENABLE_ZLIB],$LLVM_ENABLE_ZLIB,
+                   [Define if zlib is enabled])
+
 dnl Allow building without position independent code
 AC_ARG_ENABLE(pic,
   AS_HELP_STRING([--enable-pic],
@@ -1118,6 +1133,11 @@ if test "$ENABLE_THREADS" -eq 1 && test "$ENABLE_PTHREADS" -eq 1 ; then
                  [Have pthread_getspecific]))
 fi
 
+dnl zlib is optional; used for compression/uncompression
+if test "$LLVM_ENABLE_ZLIB" -eq 1 ; then
+  AC_CHECK_LIB(z, compress2)
+fi
+
 dnl Allow extra x86-disassembler library
 AC_ARG_WITH(udis86,
   AS_HELP_STRING([--with-udis86=<path>],
@@ -1203,6 +1223,13 @@ if test "$ENABLE_THREADS" -eq 1 && test "$ENABLE_PTHREADS" -eq 1 ; then
 else
   AC_SUBST(HAVE_PTHREAD, 0)
 fi
+if test "$LLVM_ENABLE_ZLIB" -eq 1 ; then
+  AC_CHECK_HEADERS(zlib.h,
+                   AC_SUBST(HAVE_LIBZ, 1),
+                   AC_SUBST(HAVE_LIBZ, 0))
+else
+  AC_SUBST(HAVE_LIBZ, 0)
+fi
 
 dnl Try to find ffi.h.
 if test "$llvm_cv_enable_libffi" = "yes" ; then