depends: add debug/release flags for linux/osx/win

Linux and mingw enable libstdc++ debugging for extra runtime checks. OSX
doesn't play nice, so don't enable it there.

depends/hosts/darwin.mk

@@ -3,6 +3,14 @@ OSX_SDK_VERSION=10.7
 OSX_SDK=$(SDK_PATH)/MacOSX$(OSX_SDK_VERSION).sdk
 darwin_CC=clang -target $(host) -mmacosx-version-min=$(OSX_MIN_VERSION) --sysroot $(OSX_SDK)
 darwin_CXX=clang++ -target $(host) -mmacosx-version-min=$(OSX_MIN_VERSION) --sysroot $(OSX_SDK)
-darwin_CFLAGS=-pipe -O2
+
+darwin_CFLAGS=-pipe
 darwin_CXXFLAGS=$(darwin_CFLAGS)
+
+darwin_release_CFLAGS=-O2
+darwin_release_CXXFLAGS=$(darwin_release_CFLAGS)
+
+darwin_debug_CFLAGS=-O1
+darwin_debug_CXXFLAGS=$(darwin_debug_CFLAGS)
+
 darwin_native_toolchain=native_cctools

depends/hosts/linux.mk

@@ -1,6 +1,14 @@
-linux_CFLAGS=-pipe -O2
+linux_CFLAGS=-pipe
 linux_CXXFLAGS=$(linux_CFLAGS)
 
+linux_release_CFLAGS=-O2
+linux_release_CXXFLAGS=$(linux_release_CFLAGS)
+
+linux_debug_CFLAGS=-O1
+linux_debug_CXXFLAGS=$(linux_debug_CFLAGS)
+
+linux_debug_CPPFLAGS=-D_GLIBCXX_DEBUG -D_GLIBCXX_DEBUG_PEDANTIC
+
 ifeq (86,$(findstring 86,$(build_arch)))
 i686_linux_CC=gcc -m32
 i686_linux_CXX=g++ -m32

depends/hosts/mingw32.mk

@@ -1,2 +1,10 @@
-mingw32_CFLAGS=-pipe -O2
+mingw32_CFLAGS=-pipe
 mingw32_CXXFLAGS=$(mingw32_CFLAGS)
+
+mingw32_release_CFLAGS=-O2
+mingw32_release_CXXFLAGS=$(mingw32_release_CFLAGS)
+
+mingw32_debug_CFLAGS=-O1
+mingw32_debug_CXXFLAGS=$(mingw32_debug_CFLAGS)
+
+mingw32_debug_CPPFLAGS=-D_GLIBCXX_DEBUG -D_GLIBCXX_DEBUG_PEDANTIC