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-rw-r--r--Build/source/libs/zlib/zlib.ac58
1 files changed, 58 insertions, 0 deletions
diff --git a/Build/source/libs/zlib/zlib.ac b/Build/source/libs/zlib/zlib.ac
new file mode 100644
index 00000000000..1a67b344866
--- /dev/null
+++ b/Build/source/libs/zlib/zlib.ac
@@ -0,0 +1,58 @@
+if test "$needs_zlib" = no; then
+ ZLIBCPPFLAGS=
+ LDZLIB=
+ ZLIBDEP=
+else
+ EXTRA_ZLIB_INCLUDE=
+ EXTRA_ZLIB_LIBDIR=
+
+ if test "$with_system_zlib" = yes; then
+ if test "x$with_zlib_libdir" != x; then
+ EXTRA_ZLIB_LIBDIR="-L$with_zlib_libdir"
+ fi
+ if test "x$with_zlib_include" != x; then
+ EXTRA_ZLIB_INCLUDE="-I$with_zlib_include"
+ fi
+ fi
+
+ OLD_LDFLAGS=$LDFLAGS
+ OLD_CPP=$CPP
+ OLD_LIBS=$LIBS
+
+ LDFLAGS="$LDFLAGS $EXTRA_ZLIB_LIBDIR"
+ CPP="$CPP $EXTRA_ZLIB_INCLUDE"
+
+ if test "$with_system_zlib" = yes; then
+ AC_CHECK_LIB(z, inflate,,
+ AC_MSG_WARN(Standard ZLIB library not found. Compiling my own.)
+ with_system_zlib=no)
+ fi
+
+ if test "$with_system_zlib" = yes; then
+ AC_CHECK_HEADERS(zlib.h)
+ if test "$ac_cv_header_zlib_h" != yes; then
+ AC_MSG_WARN(zlib.h not found. Using my own zlib sources.)
+ with_system_zlib=no
+ fi
+ fi
+
+ LDFLAGS=$OLD_LDFLAGS
+ CPP=$OLD_CPP
+ LIBS=$OLD_LIBS
+
+ if test "$with_system_zlib" != yes; then
+ ZLIBCPPFLAGS='-I$(ZLIBDIR) -I$(ZLIBSRCDIR)'
+ LDZLIB='$(ZLIBDIR)/libz.a'
+ ZLIBDEP='$(ZLIBDIR)/libz.a'
+ using_system_zlib=no
+ else
+ ZLIBCPPFLAGS="$EXTRA_ZLIB_INCLUDE"
+ LDZLIB="$EXTRA_ZLIB_LIBDIR -lz"
+ ZLIBDEP=
+ using_system_zlib=yes
+ fi
+fi
+
+AC_SUBST(ZLIBCPPFLAGS)
+AC_SUBST(LDZLIB)
+AC_SUBST(ZLIBDEP)