Add EXCLUDE_FROM_ALL flag to FetchContent (#5)

extern/CMakeLists.txt

@@ -6,11 +6,11 @@ set(BOOST_INCLUDE_LIBRARIES thread filesystem system program_options dynamic_bit
 set(BOOST_ENABLE_CMAKE ON)
 include(FetchContent)
 FetchContent_Declare(
-  Boost
-  GIT_REPOSITORY https://github.com/boostorg/boost.git
-  GIT_TAG boost-1.84.0
-  GIT_SHALLOW TRUE
-)
+    Boost
+    GIT_REPOSITORY https://github.com/boostorg/boost.git
+    GIT_TAG boost-1.84.0
+    GIT_SHALLOW TRUE
+    EXCLUDE_FROM_ALL)
 FetchContent_MakeAvailable(Boost)
 
 # Fetch fontanf/mathoptsolverscmake.
@@ -26,22 +26,25 @@ endif()
 FetchContent_Declare(
     mathoptsolverscmake
     GIT_REPOSITORY https://github.com/fontanf/mathoptsolverscmake.git
-    GIT_TAG 56190725f424249a3acd8fce3ff50e08fe675cc6)
-    #SOURCE_DIR "${PROJECT_SOURCE_DIR}/../mathoptsolverscmake/")
+    GIT_TAG 38d50d4bfe2f7fb2a0c505c398ae3ab3837c57d5
+    #SOURCE_DIR "${PROJECT_SOURCE_DIR}/../mathoptsolverscmake/"
+    EXCLUDE_FROM_ALL)
 FetchContent_MakeAvailable(mathoptsolverscmake)
 
 # Fetch fontanf/knapsacksolver.
 FetchContent_Declare(
     knapsacksolver
     GIT_REPOSITORY https://github.com/fontanf/knapsacksolver.git
-    GIT_TAG abbe052b56c6e985112cda23abda26f1eb0e43ce)
-    #SOURCE_DIR "${PROJECT_SOURCE_DIR}/../knapsacksolver/")
+    GIT_TAG edd1332fa2578c2633b6f790a999d1f07ef0978c
+    #SOURCE_DIR "${PROJECT_SOURCE_DIR}/../knapsacksolver/"
+    EXCLUDE_FROM_ALL)
 FetchContent_MakeAvailable(knapsacksolver)
 
 # Fetch fontanf/treesearchsolver.
 FetchContent_Declare(
     treesearchsolver
     GIT_REPOSITORY https://github.com/fontanf/treesearchsolver.git
-    GIT_TAG dca5b35d5cb6de3443b9ab08175f931b2df29b6b)
-    #SOURCE_DIR "${PROJECT_SOURCE_DIR}/../treesearchsolver/")
+    GIT_TAG df1a0a1d041b3bc73bf97590dc31ad5e912fd877
+    #SOURCE_DIR "${PROJECT_SOURCE_DIR}/../treesearchsolver/"
+    EXCLUDE_FROM_ALL)
 FetchContent_MakeAvailable(treesearchsolver)