Allow to use case sensitive filesystem for source code (#548)

* Allow to use case sensitive filesystem for source code

Should fix #289

Why: Apple is unstable about its platform naming scheme, so use our own
build variable GITUP_PLATFORM. GITUP_PLATFORM initialized in
Base.xcconfig for easy management and set depending on sdk.

* fix GITUP_PLATFORM definition for mobile systems

* add short comment for better explanation of GITUP_PLATFORM config variable

* Update comment reflecting case-sensitivity issue

Author: vovkasm

GitUp/GitUp.xcodeproj/project.pbxproj

@@ -490,8 +490,8 @@
 				HEADER_SEARCH_PATHS = "../GitUpKit/Third-Party/libgit2/include";
 				OTHER_LDFLAGS = (
 					"$(BUILD_DIR)/$(CONFIGURATION)/libgit2.a",
-					"../GitUpKit/Third-Party/libssl/$(PLATFORM_NAME)/lib/libcrypto.a",
-					"../GitUpKit/Third-Party/libssh2/$(PLATFORM_NAME)/lib/libssh2.a",
+					"../GitUpKit/Third-Party/libssl/$(GITUP_PLATFORM)/lib/libcrypto.a",
+					"../GitUpKit/Third-Party/libssh2/$(GITUP_PLATFORM)/lib/libssh2.a",
 				);
 				PRODUCT_NAME = gitup;
 				SKIP_INSTALL = YES;
@@ -505,8 +505,8 @@
 				HEADER_SEARCH_PATHS = "../GitUpKit/Third-Party/libgit2/include";
 				OTHER_LDFLAGS = (
 					"$(BUILD_DIR)/$(CONFIGURATION)/libgit2.a",
-					"../GitUpKit/Third-Party/libssl/$(PLATFORM_NAME)/lib/libcrypto.a",
-					"../GitUpKit/Third-Party/libssh2/$(PLATFORM_NAME)/lib/libssh2.a",
+					"../GitUpKit/Third-Party/libssl/$(GITUP_PLATFORM)/lib/libcrypto.a",
+					"../GitUpKit/Third-Party/libssh2/$(GITUP_PLATFORM)/lib/libssh2.a",
 				);
 				PRODUCT_NAME = gitup;
 				SKIP_INSTALL = YES;

GitUpKit/GitUpKit.xcodeproj/project.pbxproj

@@ -1841,13 +1841,13 @@
 			buildSettings = {
 				HEADER_SEARCH_PATHS = (
 					"Third-Party/libgit2/include",
-					"Third-Party/libsqlite3/$(PLATFORM_NAME)/include",
-					"Third-Party/libssh2/$(PLATFORM_NAME)/include",
+					"Third-Party/libsqlite3/$(GITUP_PLATFORM)/include",
+					"Third-Party/libssh2/$(GITUP_PLATFORM)/include",
 				);
 				OTHER_LDFLAGS = (
-					"Third-Party/libsqlite3/$(PLATFORM_NAME)/lib/libsqlite3.a",
-					"Third-Party/libssl/$(PLATFORM_NAME)/lib/libcrypto.a",
-					"Third-Party/libssh2/$(PLATFORM_NAME)/lib/libssh2.a",
+					"Third-Party/libsqlite3/$(GITUP_PLATFORM)/lib/libsqlite3.a",
+					"Third-Party/libssl/$(GITUP_PLATFORM)/lib/libcrypto.a",
+					"Third-Party/libssh2/$(GITUP_PLATFORM)/lib/libssh2.a",
 				);
 			};
 			name = Debug;
@@ -1858,13 +1858,13 @@
 			buildSettings = {
 				HEADER_SEARCH_PATHS = (
 					"Third-Party/libgit2/include",
-					"Third-Party/libsqlite3/$(PLATFORM_NAME)/include",
-					"Third-Party/libssh2/$(PLATFORM_NAME)/include",
+					"Third-Party/libsqlite3/$(GITUP_PLATFORM)/include",
+					"Third-Party/libssh2/$(GITUP_PLATFORM)/include",
 				);
 				OTHER_LDFLAGS = (
-					"Third-Party/libsqlite3/$(PLATFORM_NAME)/lib/libsqlite3.a",
-					"Third-Party/libssl/$(PLATFORM_NAME)/lib/libcrypto.a",
-					"Third-Party/libssh2/$(PLATFORM_NAME)/lib/libssh2.a",
+					"Third-Party/libsqlite3/$(GITUP_PLATFORM)/lib/libsqlite3.a",
+					"Third-Party/libssl/$(GITUP_PLATFORM)/lib/libcrypto.a",
+					"Third-Party/libssh2/$(GITUP_PLATFORM)/lib/libssh2.a",
 				);
 			};
 			name = Release;

GitUpKit/Third-Party/libgit2.xcodeproj/project.pbxproj

@@ -1502,7 +1502,7 @@
 				);
 				GCC_WARN_UNINITIALIZED_AUTOS = NO;
 				HEADER_SEARCH_PATHS = (
-					"libssh2/$(PLATFORM_NAME)/include",
+					"libssh2/$(GITUP_PLATFORM)/include",
 					libgit2/src,
 					libgit2/include,
 					"libgit2/deps/http-parser",
@@ -1550,7 +1550,7 @@
 				);
 				GCC_WARN_UNINITIALIZED_AUTOS = NO;
 				HEADER_SEARCH_PATHS = (
-					"libssh2/$(PLATFORM_NAME)/include",
+					"libssh2/$(GITUP_PLATFORM)/include",
 					libgit2/src,
 					libgit2/include,
 					"libgit2/deps/http-parser",

Xcode-Configurations/Base.xcconfig

@@ -46,3 +46,10 @@ GCC_WARN_UNINITIALIZED_AUTOS = YES
 GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE
 GCC_WARN_UNUSED_FUNCTION = YES
 GCC_WARN_UNUSED_VARIABLE = YES
+
+// GITUP_PLATFORM determines where to find header files and precompiled libs
+// required for build on case-sensitive systems, for ex. headers of libssh2 located in
+// "GitUpKit/Third-Party/libssh2/MacOSX/include" folder.
+GITUP_PLATFORM[sdk=macosx*] = MacOSX
+GITUP_PLATFORM[sdk=iphonesimulator*] = iPhoneSimulator
+GITUP_PLATFORM[sdk=iphoneos*] = iPhoneOS