emo/ndhc
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

CMake: Do not try to test for the glibc version when cross-compiling.

Browse Source
This commit is contained in:
Nicholas J. Kain
2015-02-12 18:46:44 -05:00
parent b792162113
commit 9d8d653877
1 changed files with 23 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files

44
CMakeLists.txt
View File

@@ -96,28 +96,30 @@ if (NOT (${OSNAME} STREQUAL "Linux"))
return()
endif()
set(GLIBC_DETECT_TEST_C
"
#include <stdio.h>
int main(int argc, char *argv[]) {
printf(\"%d.%d\", __GLIBC__, __GLIBC_MINOR__);
return 0;
}
")
file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/detect/glibc.c "${GLIBC_DETECT_TEST_C}\n")
try_run(GLIBC_DETECTION GLIBC_COMPILE
${CMAKE_CURRENT_BINARY_DIR}/detect ${CMAKE_CURRENT_BINARY_DIR}/detect/glibc.c
RUN_OUTPUT_VARIABLE GLIBC_VERSION)
if (GLIBC_VERSION AND GLIBC_COMPILE)
message("glibc version detected as ${GLIBC_VERSION}")
COMPARE_VERSION_STRINGS(${GLIBC_VERSION} "2.17" GLIBC_MUST_LINK_RT)
if (${GLIBC_MUST_LINK_RT} LESS 0)
message("glibc <2.17 detected; linking against librt.")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -lrt")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -lrt")
if (NOT CMAKE_CROSSCOMPILE)
set(GLIBC_DETECT_TEST_C
"
#include <stdio.h>
int main(int argc, char *argv[]) {
printf(\"%d.%d\", __GLIBC__, __GLIBC_MINOR__);
return 0;
}
")
file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/detect/glibc.c "${GLIBC_DETECT_TEST_C}\n")
try_run(GLIBC_DETECTION GLIBC_COMPILE
${CMAKE_CURRENT_BINARY_DIR}/detect ${CMAKE_CURRENT_BINARY_DIR}/detect/glibc.c
RUN_OUTPUT_VARIABLE GLIBC_VERSION)
if (GLIBC_VERSION AND GLIBC_COMPILE)
message("glibc version detected as ${GLIBC_VERSION}")
COMPARE_VERSION_STRINGS(${GLIBC_VERSION} "2.17" GLIBC_MUST_LINK_RT)
if (${GLIBC_MUST_LINK_RT} LESS 0)
message("glibc <2.17 detected; linking against librt.")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -lrt")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -lrt")
endif()
else()
message("Could not detect glibc version.")
endif()
else()
message("Could not detect glibc version.")
endif()
if ("$ENV{CROSSCOMPILE_MACHINENAME}" STREQUAL "")