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https://github.com/stevengj/nlopt/commit/e45da76243191febe447e3173e5d23e05fc84ee4
From e45da76243191febe447e3173e5d23e05fc84ee4 Mon Sep 17 00:00:00 2001
From: Julien Schueller <schueller@phimeca.com>
Date: Mon, 24 Feb 2025 15:02:22 +0100
Subject: [PATCH] CMake: Detect libm with find_library (#596)
---
CMakeLists.txt | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/CMakeLists.txt b/CMakeLists.txt
index e5d9c67c..c0a84de3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -80,8 +80,6 @@ include (CheckTypeSize)
include (CheckCCompilerFlag)
include (CheckCXXSymbolExists)
include (CheckCSourceCompiles)
-include (CheckCXXCompilerFlag)
-include (CheckLibraryExists)
#==============================================================================
# COMPILATION CHECKINGS and CONFIGURATION GENERATION
@@ -108,9 +106,8 @@ set (HAVE_UINT32_T ${SIZEOF_UINT32_T})
check_type_size ("unsigned int" SIZEOF_UNSIGNED_INT)
check_type_size ("unsigned long" SIZEOF_UNSIGNED_LONG)
-check_library_exists ("m" sqrt "" HAVE_LIBM)
-if (HAVE_LIBM)
- set (M_LIBRARY m)
+find_library(M_LIBRARY m)
+if (M_LIBRARY)
set (LIBS_PRIVATE "-l${M_LIBRARY}")
endif()
@@ -258,7 +255,9 @@ if (NLOPT_LUKSAN)
target_include_directories(${nlopt_lib} PRIVATE src/algs/luksan)
target_compile_definitions (${nlopt_lib} PRIVATE NLOPT_LUKSAN)
endif ()
-target_link_libraries (${nlopt_lib} ${M_LIBRARY})
+if (M_LIBRARY)
+ target_link_libraries (${nlopt_lib} ${M_LIBRARY})
+endif ()
set_target_properties (${nlopt_lib} PROPERTIES SOVERSION ${SO_MAJOR})
set_target_properties (${nlopt_lib} PROPERTIES VERSION "${SO_MAJOR}.${SO_MINOR}.${SO_PATCH}")
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