Author: brane
Date: Sat Jun 14 13:05:53 2025
New Revision: 1926412
URL: http://svn.apache.org/viewvc?rev=1926412&view=rev
Log:
In the CMake build: add a runtime check to determine if the target platform
uses ELF, instead of guessing based on the name of the platform.
* build/SerfPlatform.cmake
(SERF_ELF_TARGET): Set to FALSE on Windows and Darwin only.
(_CheckElfTarget): New configure-time test to determine if
SERF_ELF_TARGET should be set (to TRUE).
Modified:
serf/trunk/build/SerfPlatform.cmake
Modified: serf/trunk/build/SerfPlatform.cmake
URL:
http://svn.apache.org/viewvc/serf/trunk/build/SerfPlatform.cmake?rev=1926412&r1=1926411&r2=1926412&view=diff
==============================================================================
--- serf/trunk/build/SerfPlatform.cmake (original)
+++ serf/trunk/build/SerfPlatform.cmake Sat Jun 14 13:05:53 2025
@@ -17,9 +17,20 @@
# under the License.
# ===================================================================
-if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
+if(${CMAKE_SYSTEM_NAME} MATCHES "Windows")
+ set(SERF_WINDOWS TRUE)
+ set(SERF_ELF_TARGET FALSE)
+ if(CMAKE_GENERATOR_PLATFORM MATCHES "(x64|ARM64|IA64)")
+ set(SERF_WIN64 TRUE)
+ set(SERF_PLATFORM "Windows (64-bit)")
+ else()
+ set(SERF_WIN32 TRUE)
+ set(SERF_PLATFORM "Windows (32-bit)")
+ endif()
+elseif(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
set(SERF_UNIX TRUE)
set(SERF_DARWIN TRUE)
+ set(SERF_ELF_TARGET FALSE)
if(NOT RELATIVE_RPATH)
set(CMAKE_MACOSX_RPATH FALSE)
endif()
@@ -31,32 +42,19 @@ if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin
elseif(${CMAKE_SYSTEM_NAME} MATCHES "Linux")
set(SERF_UNIX TRUE)
set(SERF_LINUX TRUE)
- set(SERF_ELF_TARGET TRUE)
set(SERF_PLATFORM "Linux")
elseif(${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD")
set(SERF_UNIX TRUE)
set(SERF_FREEBSD TRUE)
- set(SERF_ELF_TARGET TRUE)
set(SERF_PLATFORM "FreeBSD")
elseif(${CMAKE_SYSTEM_NAME} MATCHES "OpenBSD")
set(SERF_UNIX TRUE)
set(SERF_OPENBSD TRUE)
- set(SERF_ELF_TARGET TRUE)
set(SERF_PLATFORM "OpenBSD")
elseif(${CMAKE_SYSTEM_NAME} MATCHES "NetBSD")
set(SERF_UNIX TRUE)
set(SERF_NETBSD TRUE)
- set(SERF_ELF_TARGET TRUE)
set(SERF_PLATFORM "NetBSD")
-elseif(${CMAKE_SYSTEM_NAME} MATCHES "Windows")
- set(SERF_WINDOWS TRUE)
- if(CMAKE_GENERATOR_PLATFORM MATCHES "(x64|ARM64|IA64)")
- set(SERF_WIN64 TRUE)
- set(SERF_PLATFORM "Windows (64-bit)")
- else()
- set(SERF_WIN32 TRUE)
- set(SERF_PLATFORM "Windows (32-bit)")
- endif()
else()
set(SERF_UNIX TRUE)
set(SERF_PLATFORM "generic Unix")
@@ -71,3 +69,34 @@ string(TOLOWER ${CMAKE_SYSTEM_PROCESSOR}
string(TOLOWER ${CMAKE_SYSTEM_NAME} _system)
string(TOLOWER ${CMAKE_SYSTEM_VERSION} _version)
set(SERF_TARGET "${_arch}-${_system}${_version}")
+
+# Check if the target uses the ELF object format. We've explicitly set this to
+# FALSE on Windows and Darwin; on other platforms, we build an executable file
+# and check if it has the ELF magic number in the header.
+if(NOT DEFINED SERF_ELF_TARGET)
+ # Wrap the test into a function to keep the variables scoped.
+ function(_CheckElfTarget var_)
+ set(msg "Check if the target platform uses ELF")
+ set(src "${CMAKE_CURRENT_BINARY_DIR}/check_elf_target.c")
+ set(bin "${CMAKE_CURRENT_BINARY_DIR}/check_elf_target.out")
+ message(STATUS "${msg}")
+ file(WRITE "${src}" "int main(void) { return 0; }")
+ try_compile(success "${CMAKE_CURRENT_BINARY_DIR}"
+ SOURCES "${src}"
+ OUTPUT_VARIABLE log
+ COPY_FILE "${bin}")
+ if(success)
+ file(READ "${bin}" header LIMIT 4 HEX)
+ if("${header}" STREQUAL "7f454c46") # 0x7f E L F
+ message(STATUS "${msg} - yes")
+ set(${var_} TRUE PARENT_SCOPE)
+ else()
+ message(STATUS "${msg} - no")
+ endif()
+ else(success)
+ message(STATUS "${msg} - unknown")
+ message(STATUS "${log}")
+ endif(success)
+ endfunction(_CheckElfTarget)
+ _CheckElfTarget(SERF_ELF_TARGET)
+endif()
