cmake: Add subtree_add_library function

Author: hebasto

cmake/crc32c.cmake

@@ -78,7 +78,7 @@ check_cxx_source_compiles_with_flags("${ARM_CRC_CXXFLAGS}" "
   " HAVE_ARM64_CRC32C
 )
 
-add_library(crc32c STATIC EXCLUDE_FROM_ALL
+subtree_add_library(crc32c STATIC EXCLUDE_FROM_ALL
   ${PROJECT_SOURCE_DIR}/src/crc32c/src/crc32c.cc
   ${PROJECT_SOURCE_DIR}/src/crc32c/src/crc32c_portable.cc
 )
@@ -111,5 +111,3 @@ if(HAVE_ARM64_CRC32C)
     APPEND PROPERTY COMPILE_OPTIONS ${ARM_CRC_CXXFLAGS}
   )
 endif()
-
-target_link_libraries(crc32c PRIVATE core_base_interface)

cmake/leveldb.cmake

@@ -9,7 +9,7 @@
 include(CheckCXXSymbolExists)
 check_cxx_symbol_exists(F_FULLFSYNC "fcntl.h" HAVE_FULLFSYNC)
 
-add_library(leveldb STATIC EXCLUDE_FROM_ALL
+subtree_add_library(leveldb STATIC EXCLUDE_FROM_ALL
   ${PROJECT_SOURCE_DIR}/src/leveldb/db/builder.cc
   ${PROJECT_SOURCE_DIR}/src/leveldb/db/c.cc
   ${PROJECT_SOURCE_DIR}/src/leveldb/db/db_impl.cc
@@ -95,7 +95,6 @@ else()
 endif()
 
 target_link_libraries(leveldb PRIVATE
-  core_base_interface
   nowarn_leveldb_interface
   crc32c
 )

cmake/minisketch.cmake

@@ -40,7 +40,7 @@ if(MSVC)
 endif()
 
 if(HAVE_CLMUL)
-  add_library(minisketch_clmul OBJECT EXCLUDE_FROM_ALL
+  subtree_add_library(minisketch_clmul OBJECT EXCLUDE_FROM_ALL
     ${PROJECT_SOURCE_DIR}/src/minisketch/src/fields/clmul_1byte.cpp
     ${PROJECT_SOURCE_DIR}/src/minisketch/src/fields/clmul_2bytes.cpp
     ${PROJECT_SOURCE_DIR}/src/minisketch/src/fields/clmul_3bytes.cpp
@@ -54,12 +54,11 @@ if(HAVE_CLMUL)
   target_compile_options(minisketch_clmul PRIVATE ${CLMUL_CXXFLAGS})
   target_link_libraries(minisketch_clmul
     PRIVATE
-      core_base_interface
       minisketch_common
   )
 endif()
 
-add_library(minisketch STATIC EXCLUDE_FROM_ALL
+subtree_add_library(minisketch STATIC EXCLUDE_FROM_ALL
   ${PROJECT_SOURCE_DIR}/src/minisketch/src/minisketch.cpp
   ${PROJECT_SOURCE_DIR}/src/minisketch/src/fields/generic_1byte.cpp
   ${PROJECT_SOURCE_DIR}/src/minisketch/src/fields/generic_2bytes.cpp
@@ -78,7 +77,6 @@ target_include_directories(minisketch
 
 target_link_libraries(minisketch
   PRIVATE
-    core_base_interface
     minisketch_common
     $<TARGET_NAME_IF_EXISTS:minisketch_clmul>
 )

cmake/module/AddTargetMacros.cmake

@@ -4,6 +4,18 @@
 
 include_guard(GLOBAL)
 
+function(subtree_add_library name)
+  cmake_parse_arguments(PARSE_ARGV 1 FWD "" "" "")
+  add_library("${name}" ${FWD_UNPARSED_ARGUMENTS})
+  target_link_libraries("${name}" PRIVATE core_base_interface)
+  cmake_language(EVAL CODE "
+    cmake_language(DEFER
+      DIRECTORY ${PROJECT_SOURCE_DIR}
+      CALL target_link_libraries ${name} PRIVATE extra_flags_interface
+    )
+  ")
+endfunction()
+
 function(bitcoincore_add_library name)
   cmake_parse_arguments(PARSE_ARGV 1 FWD "" "" "")
   add_library("${name}" ${FWD_UNPARSED_ARGUMENTS})

cmake/secp256k1.cmake

@@ -22,7 +22,7 @@ check_c_source_compiles("
   " HAVE_64BIT_ASM
 )
 
-add_library(secp256k1 STATIC EXCLUDE_FROM_ALL
+subtree_add_library(secp256k1 STATIC EXCLUDE_FROM_ALL
   ${PROJECT_SOURCE_DIR}/src/secp256k1/src/secp256k1.c
   ${PROJECT_SOURCE_DIR}/src/secp256k1/src/precomputed_ecmult.c
   ${PROJECT_SOURCE_DIR}/src/secp256k1/src/precomputed_ecmult_gen.c
@@ -54,5 +54,3 @@ if(MSVC)
       /wd4267
   )
 endif()
-
-target_link_libraries(secp256k1 PRIVATE core_base_interface)