Build: Improve automatic finding of libraries on mac

cmake/macros/FindOpenSSL.cmake

@@ -168,6 +168,12 @@ else ()
     )
 endif ()
 
+if(HOMEBREW_PREFIX)
+  list(APPEND _OPENSSL_ROOT_HINTS
+    "${HOMEBREW_PREFIX}/opt/openssl@1.1"
+    "${HOMEBREW_PREFIX}/opt/openssl@3")
+endif()
+
 set(_OPENSSL_ROOT_HINTS_AND_PATHS
     HINTS ${_OPENSSL_ROOT_HINTS}
     PATHS ${_OPENSSL_ROOT_PATHS}

cmake/macros/FindReadline.cmake

@@ -45,12 +45,20 @@ Hints
 Set ``READLINE_ROOT_DIR`` to the root directory of Readline installation.
 #]=======================================================================]
 
+set(_READLINE_ROOT_HINTS
+  ${READLINE_ROOT_DIR}
+  ENV READLINE_ROOT_DIR
+)
+
+if(HOMEBREW_PREFIX)
+  list(APPEND _READLINE_ROOT_HINTS "${HOMEBREW_PREFIX}/opt/readline")
+endif()
+
 find_path(READLINE_INCLUDE_DIR
   NAMES
     readline/readline.h
   HINTS
-    ${READLINE_ROOT_DIR}
-    ENV READLINE_ROOT_DIR
+    ${_READLINE_ROOT_HINTS}
   PATH_SUFFIXES
     include)
 
@@ -58,8 +66,7 @@ find_library(READLINE_LIBRARY
   NAMES
     readline
   HINTS
-    ${READLINE_ROOT_DIR}
-    ENV READLINE_ROOT_DIR
+    ${_READLINE_ROOT_HINTS}
   PATH_SUFFIXES
     lib)
 

cmake/platform/unix/settings.cmake

@@ -31,6 +31,20 @@ else()
   message(STATUS "UNIX: Using default system linker")
 endif()
 
+if(APPLE)
+  find_program(HOMEBREW_EXECUTABLE brew)
+
+  if (HOMEBREW_EXECUTABLE)
+    # setup homebrew paths
+    message(STATUS "Homebrew found at ${HOMEBREW_EXECUTABLE}")
+    execute_process(COMMAND ${HOMEBREW_EXECUTABLE} config OUTPUT_VARIABLE HOMEBREW_STATUS_STR)
+    string(REGEX MATCH "HOMEBREW_PREFIX: ([^\n]*)" HOMEBREW_STATUS_STR ${HOMEBREW_STATUS_STR})
+    set(HOMEBREW_PREFIX ${CMAKE_MATCH_1})
+    message(STATUS "Homebrew installation found at ${HOMEBREW_PREFIX}")
+    set(CMAKE_PREFIX_PATH "${HOMEBREW_PREFIX}")
+  endif()
+endif()
+
 message(STATUS "UNIX: Detected compiler: ${CMAKE_C_COMPILER}")
 if(CMAKE_C_COMPILER MATCHES "gcc" OR CMAKE_C_COMPILER_ID STREQUAL "GNU")
   include(${CMAKE_SOURCE_DIR}/cmake/compiler/gcc/settings.cmake)