From 01e0fc1b50ebe975775b929273f6f8479f8ee3c5 Mon Sep 17 00:00:00 2001
From: Tyler Veness <calcmogul@gmail.com>
Date: Sun, 25 Feb 2024 23:12:31 -0800
Subject: [PATCH] Allow disabling example build (#408)

---
 CMakeLists.txt | 87 +++++++++++++++++++++++++-------------------------
 1 file changed, 44 insertions(+), 43 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4748ab22..8add1227 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -67,6 +67,10 @@ option(BUILD_SHARED_LIBS "Build using shared libraries" ON)
 
 set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS FALSE)
 
+option(BUILD_BENCHMARKING "Build CasADi and Sleipnir benchmarks" ON)
+option(BUILD_EXAMPLES "Build examples" ON)
+option(BUILD_PYTHON "Build Python module" OFF)
+
 include(SleipnirCompilerFlags)
 
 file(GLOB_RECURSE Sleipnir_src src/*.cpp)
@@ -190,8 +194,6 @@ install(
     DESTINATION lib/cmake/Sleipnir
 )
 
-option(BUILD_BENCHMARKING "Build CasADi and Sleipnir benchmarks" ON)
-
 # Add benchmark executables if CasADi exists
 if(BUILD_BENCHMARKING)
     find_package(casadi QUIET)
@@ -246,54 +248,53 @@ if(BUILD_TESTING)
 endif()
 
 # Build examples and example tests
-include(SleipnirSubdirList)
-sleipnir_subdir_list(EXAMPLES ${CMAKE_CURRENT_SOURCE_DIR}/examples)
-foreach(example ${EXAMPLES})
-    # Build example
-    file(GLOB_RECURSE sources examples/${example}/src/*.cpp)
-    add_executable(${example} ${sources})
-    sleipnir_compiler_flags(${example})
-    target_include_directories(
-        ${example}
-        PRIVATE
-            ${CMAKE_CURRENT_SOURCE_DIR}/examples/${example}/include
-            ${CMAKE_CURRENT_SOURCE_DIR}/thirdparty/units/include
-    )
-    target_link_libraries(${example} PRIVATE Sleipnir)
-
-    # Build example test if files exist for it
-    if(
-        BUILD_TESTING
-        AND EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/examples/${example}/test
-    )
-        file(GLOB_RECURSE test_sources examples/${example}/test/*.cpp)
-        add_executable(${example}Test ${sources} ${test_sources})
-        target_include_directories(
-            ${example}Test
-            PRIVATE
-                ${CMAKE_CURRENT_SOURCE_DIR}/examples/${example}/src
-                ${CMAKE_CURRENT_SOURCE_DIR}/examples/${example}/test
-                ${CMAKE_CURRENT_SOURCE_DIR}/thirdparty/units/include
-        )
-        sleipnir_compiler_flags(${example}Test)
-        target_compile_definitions(${example}Test PUBLIC RUNNING_TESTS)
+if(BUILD_EXAMPLES)
+    include(SleipnirSubdirList)
+    sleipnir_subdir_list(EXAMPLES ${CMAKE_CURRENT_SOURCE_DIR}/examples)
+    foreach(example ${EXAMPLES})
+        # Build example
+        file(GLOB_RECURSE sources examples/${example}/src/*.cpp)
+        add_executable(${example} ${sources})
+        sleipnir_compiler_flags(${example})
         target_include_directories(
-            ${example}Test
+            ${example}
             PRIVATE
                 ${CMAKE_CURRENT_SOURCE_DIR}/examples/${example}/include
                 ${CMAKE_CURRENT_SOURCE_DIR}/thirdparty/units/include
         )
-        target_link_libraries(
-            ${example}Test
-            PRIVATE Sleipnir Catch2::Catch2WithMain
+        target_link_libraries(${example} PRIVATE Sleipnir)
+
+        # Build example test if files exist for it
+        if(
+            BUILD_TESTING
+            AND EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/examples/${example}/test
         )
-        if(NOT CMAKE_TOOLCHAIN_FILE)
-            catch_discover_tests(${example}Test)
+            file(GLOB_RECURSE test_sources examples/${example}/test/*.cpp)
+            add_executable(${example}Test ${sources} ${test_sources})
+            target_include_directories(
+                ${example}Test
+                PRIVATE
+                    ${CMAKE_CURRENT_SOURCE_DIR}/examples/${example}/src
+                    ${CMAKE_CURRENT_SOURCE_DIR}/examples/${example}/test
+            )
+            sleipnir_compiler_flags(${example}Test)
+            target_compile_definitions(${example}Test PUBLIC RUNNING_TESTS)
+            target_include_directories(
+                ${example}Test
+                PRIVATE
+                    ${CMAKE_CURRENT_SOURCE_DIR}/examples/${example}/include
+                    ${CMAKE_CURRENT_SOURCE_DIR}/thirdparty/units/include
+            )
+            target_link_libraries(
+                ${example}Test
+                PRIVATE Sleipnir Catch2::Catch2WithMain
+            )
+            if(NOT CMAKE_TOOLCHAIN_FILE)
+                catch_discover_tests(${example}Test)
+            endif()
         endif()
-    endif()
-endforeach()
-
-option(BUILD_PYTHON "Build Python module" OFF)
+    endforeach()
+endif()
 
 if(BUILD_PYTHON)
     find_package(Python REQUIRED COMPONENTS Interpreter Development)