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-rw-r--r--configure.ac4
-rw-r--r--src/lib_proj.cmake2
2 files changed, 3 insertions, 3 deletions
diff --git a/configure.ac b/configure.ac
index 31cb2a8a..25675d6a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -151,10 +151,10 @@ AC_MSG_CHECKING([to enable LTO (link time optimization) build])
AC_ARG_ENABLE(lto,
AS_HELP_STRING([--enable-lto],
- [enable LTO(link time optimization) (enabled by default)]))
+ [enable LTO(link time optimization) (disabled by default)]))
FLTO_FLAG=""
-if test "x$enable_lto" = "xyes" -o "x$enable_lto" = "x"; then
+if test "x$enable_lto" = "xyes"; then
AC_LANG_PUSH([C++])
AX_CHECK_COMPILE_FLAG([-flto], [FLTO_FLAG="-flto"],,[$ERROR_ON_UNKNOWN_OPTIONS])
if test "$FLTO_FLAG" != ""; then
diff --git a/src/lib_proj.cmake b/src/lib_proj.cmake
index 6fe84944..bb45db44 100644
--- a/src/lib_proj.cmake
+++ b/src/lib_proj.cmake
@@ -32,7 +32,7 @@ elseif(USE_THREAD AND NOT Threads_FOUND)
message(FATAL_ERROR "No thread library found and thread/mutex support is required by USE_THREAD option")
endif()
-option(ENABLE_LTO "Build library with LTO optimization (if available)." ON)
+option(ENABLE_LTO "Build library with LTO optimization (if available)." OFF)
if(ENABLE_LTO)
if("${CMAKE_C_COMPILER_ID}" MATCHES "Clang")
include (CheckCXXSourceCompiles)