cmake: fix highs build on alpine

see: ERGO-Code/HiGHS#3000

Author: Mizux

cmake/dependencies/CMakeLists.txt

@@ -315,6 +315,8 @@ if(BUILD_HIGHS)
     GIT_TAG        "v1.14.0"
     GIT_SHALLOW TRUE
     UPDATE_COMMAND git reset --hard
+    PATCH_COMMAND git apply --ignore-whitespace
+    "${CMAKE_CURRENT_LIST_DIR}/../../patches/highs-v1.14.0.patch"
     SYSTEM
   )
   set(CI OFF) # disable CI tests

patches/highs-v1.14.0.patch

@@ -0,0 +1,28 @@
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 1dc3a98f..1388c818 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -388,8 +388,14 @@ if (BUILD_CXX)
+             "IPO / LTO: disabled by default when building a static library; "
+             "set CMAKE_INTERPROCEDURAL_OPTIMIZATION=ON to enable")
+   else()
+-    set(CMAKE_INTERPROCEDURAL_OPTIMIZATION TRUE)
+-    message(STATUS "IPO / LTO: enabled")
++    if(EXISTS "/etc/alpine-release")
++      # LTO is known to cause issues with fortified functions on Alpine (musl)
++      set(CMAKE_INTERPROCEDURAL_OPTIMIZATION FALSE)
++      message(STATUS "IPO / LTO: disabled on Alpine to avoid conflicts with fortified functions")
++    else()
++      set(CMAKE_INTERPROCEDURAL_OPTIMIZATION TRUE)
++      message(STATUS "IPO / LTO: enabled")
++    endif()
+   endif()
+   if (CUPDLP_GPU AND CMAKE_INTERPROCEDURAL_OPTIMIZATION)
+       set(CMAKE_INTERPROCEDURAL_OPTIMIZATION FALSE)
+@@ -980,4 +986,4 @@ set(CPACK_COMPONENT_LIBS_DISPLAY_NAME "HiGHS Libraries")
+ 
+ if(NOT CPack_CMake_INCLUDED)
+   include(CPack)
+-endif()
+\ No newline at end of file
++endif()