Hi Andreas,
thanks for the output. I think I found the cause:
Andreas Metzler schrieb am Dienstag, 26. Oktober 2021 um 18:39:03 UTC+2:
> Policy CMP0066 is not set: Honor per-config flags in try_compile()
> source-file signature. Run "cmake --help-policy CMP0066" for policy
> details. Use the cmake_policy command to set the policy and suppress this
> warning.
>
> For compatibility with older versions of CMake, try_compile is not
> honoring
> caller config-specific compiler flags (e.g. CMAKE_C_FLAGS_DEBUG) in the
> test project.
> Call Stack (most recent call first):
> /usr/share/cmake-3.21/Modules/CheckCSourceCompiles.cmake:76
> (cmake_check_source_compiles)
> CMakeLists.txt:116 (check_c_source_compiles)
> This warning is for project developers. Use -Wno-dev to suppress it.
>
I hope setting the policy fixes the issue. See attached modified patch.
A first set of the changes are already gone into the repository (default
branch). The patch is for the default branch, not the source tar ball.
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diff -r 343847e37b1f CMakeLists.txt
--- a/CMakeLists.txt Tue Oct 26 17:39:46 2021 +0200
+++ b/CMakeLists.txt Tue Oct 26 19:50:00 2021 +0200
@@ -28,8 +28,8 @@
## may need to edit the wxWidgets version number below.
##
-# require at least cmake 3.0
-cmake_minimum_required(VERSION 3.0)
+# require at least cmake 3.7
+cmake_minimum_required(VERSION 3.7)
if(POLICY CMP0074)
cmake_policy(SET CMP0074 NEW)
endif()
@@ -62,15 +62,6 @@
## global setup
project(libpano13)
-set(MYLIB "lib") # default
-if(CMAKE_INSTALL_PREFIX STREQUAL "/usr")
- get_property(USE_64 GLOBAL PROPERTY FIND_LIBRARY_USE_LIB64_PATHS)
- if(USE_64)
- include(GNUInstallDirs)
- set(MYLIB ${CMAKE_INSTALL_LIBDIR})
- endif()
-endif()
-
##
# This must come before FINDs for tiff, jpeg, png, zlib to enable
# finding the wxWidgets distributions of those packages on Windows.
@@ -119,7 +110,33 @@
INCLUDE_DIRECTORIES(${ZLIB_INCLUDE_DIR})
INCLUDE_DIRECTORIES(${PNG_INCLUDE_DIR})
-set(_common_libs ${TIFF_LIBRARIES} ${ZLIB_LIBRARIES} ${JPEG_LIBRARIES} ${PNG_LIBRARIES})
+IF(UNIX)
+ ADD_DEFINITIONS(-D__Ansi__)
+ENDIF()
+IF(MINGW AND NOT BUILD_WINGUI)
+ ADD_DEFINITIONS(/D__Ansi__)
+ENDIF()
+
+# check if libm needs additional linker flag
+cmake_policy(SET CMP0066 NEW) # take current compiler flags for test in consideration
+include(CheckCSourceCompiles)
+set(LIBM_TEST_SRC "#include <math.h>\nint main() { float f=exp(2.0); }")
+check_c_source_compiles("${LIBM_TEST_SRC}" HAVE_EXP)
+if(HAVE_EXP)
+ unset(LIBM_LIB)
+else()
+ set(SAFE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS})
+ set(CMAKE_REQUIRED_FLAGS "-lm")
+ check_c_source_compile("${LIBM_TEST_SRC}" HAVE_EXP_WITH_LIBM)
+ if(HAVE_EXP_WITH_LIBM)
+ set(LIBM_LIB "-lm")
+ else()
+ message(FATAL_ERROR "Unable to use C math library functions")
+ endif()
+ set(CMAKE_REQUIRED_FLAGS ${SAFE_REQUIRED_FLAGS})
+endif()
+
+set(_common_libs ${LIBM_LIB} ${TIFF_LIBRARIES} ${ZLIB_LIBRARIES} ${JPEG_LIBRARIES} ${PNG_LIBRARIES})
# Sparse or dense Levenberg Marquardt
OPTION(USE_SPARSE_LEVMAR "Use Sparse Levenberg Marquardt algorithm instead of dense Levenberg Marquardt algorithm" OFF)
@@ -143,10 +160,7 @@
ENDIF(UNIX)
ENDIF(${CMAKE_BUILD_TYPE} STREQUAL "Debug")
-IF(UNIX)
- ADD_DEFINITIONS(-D__Ansi__)
-ELSE(UNIX)
- IF(MSVC)
+IF(MSVC)
# Stop MSVC8 from bitching about the C library
ADD_DEFINITIONS(/D_CRT_SECURE_NO_DEPRECATE)
# Stop MSVC9 from bitching about possibly invalid STL usage
@@ -181,13 +195,7 @@
CACHE STRING "for MSVC" FORCE
)
ENDIF(NOT BUILD_DLL)
- ENDIF(MSVC)
- IF(MINGW)
- IF(NOT BUILD_WINGUI)
- ADD_DEFINITIONS(/D__Ansi__)
- ENDIF()
- ENDIF(MINGW)
-ENDIF(UNIX)
+ENDIF(MSVC)
##
## Here is the part that builds libpano
@@ -287,12 +295,12 @@
add_library(pano13 SHARED ${pano13_hdr} ${pano13_src})
target_link_libraries(pano13 ${_common_libs})
set_target_properties(pano13 PROPERTIES VERSION "3.0.0" SOVERSION "3")
- install(TARGETS pano13 LIBRARY DESTINATION ${MYLIB} COMPONENT libraries)
+ install(TARGETS pano13 LIBRARY COMPONENT libraries)
set(_pano_target pano13)
#create and install static library
add_library(pano13a STATIC ${pano13_hdr} ${pano13_src})
set_target_properties(pano13a PROPERTIES OUTPUT_NAME pano13)
- install(TARGETS pano13a ARCHIVE DESTINATION ${MYLIB} COMPONENT libraries)
+ install(TARGETS pano13a ARCHIVE COMPONENT libraries)
else()
IF(BUILD_DLL)
# Create and install shared library
@@ -303,11 +311,11 @@
IF(MINGW)
set_target_properties(pano13 PROPERTIES PREFIX "")
ENDIF()
- install(TARGETS pano13 RUNTIME DESTINATION bin ARCHIVE DESTINATION lib LIBRARY DESTINATION lib COMPONENT libraries)
+ install(TARGETS pano13 COMPONENT libraries)
ELSE(BUILD_DLL)
#create and install static library
add_library(pano13 STATIC ${pano13_hdr} ${pano13_res} ${pano13_src})
- install(TARGETS pano13 ARCHIVE DESTINATION ${MYLIB} COMPONENT libraries)
+ install(TARGETS pano13 COMPONENT libraries)
ENDIF(BUILD_DLL)
set(_pano_target pano13)
endif()
@@ -406,7 +414,11 @@
set(LIB_PNG ${PNG_LIBRARY})
set(VERSION ${PACKAGE_VERSION})
configure_file("${TOP_SRC_DIR}/libpano13.pc.in" "${CMAKE_BINARY_DIR}/libpano13.pc" @ONLY)
-install(FILES "${CMAKE_BINARY_DIR}/libpano13.pc" DESTINATION "${MYLIB}/pkgconfig" COMPONENT libraries)
+IF(${CMAKE_INSTALL_LIBDIR})
+ install(FILES "${CMAKE_BINARY_DIR}/libpano13.pc" DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig" COMPONENT libraries)
+else()
+ install(FILES "${CMAKE_BINARY_DIR}/libpano13.pc" DESTINATION "lib/pkgconfig" COMPONENT libraries)
+endif()
set(CPACK_PACKAGE_VERSION_MAJOR "${PANO_MAJOR_VERSION}")
set(CPACK_PACKAGE_VERSION_MINOR "${PANO_MINOR_VERSION}")
@@ -592,7 +604,7 @@
# (but later on when installing)
SET(CMAKE_BUILD_WITH_INSTALL_RPATH FALSE)
- SET(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/${MYLIB}")
+ SET(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_LIBDIR}")
SET(CPACK_DEBIAN_PACKAGE_DEBUG ON)
# add the automatically determined parts of the RPATH
