Compile with warnings on Unix.
The warnings got disabled at some point; this re-enables some of them, and
fixes some of the warnings.
Change-Id: I290a4fdfad18cea85e9177ba57744d97b6856bb2
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4152ecc..7deaeb5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -614,6 +614,12 @@
SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /ignore:4049")
ENDIF (MSVC)
+# GCC is not strict enough by default, so enable most of the warnings.
+IF ("${UNIX}")
+ SET(CMAKE_CXX_FLAGS
+ "${CMAKE_CXX_FLAGS} -Wall -Wextra -Wno-sign-compare -Wno-unused")
+ENDIF ("${UNIX}")
+
ADD_SUBDIRECTORY(internal/ceres)
OPTION(BUILD_DOCUMENTATION
