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

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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
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12
CMakeLists.txt
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@ -96,7 +96,8 @@ if (NOT (${OSNAME} STREQUAL "Linux"))
return()
endif()
set(GLIBC_DETECT_TEST_C
if (NOT CMAKE_CROSSCOMPILE)
set(GLIBC_DETECT_TEST_C
"
#include <stdio.h>
int main(int argc, char *argv[]) {
@ -104,11 +105,11 @@ set(GLIBC_DETECT_TEST_C
return 0;
}
")
file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/detect/glibc.c "${GLIBC_DETECT_TEST_C}\n")
try_run(GLIBC_DETECTION GLIBC_COMPILE
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)
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 (${GLIBC_MUST_LINK_RT} LESS 0)
@ -116,8 +117,9 @@ if (GLIBC_VERSION AND GLIBC_COMPILE)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -lrt")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -lrt")
endif()
else()
else()
message("Could not detect glibc version.")
endif()
endif()
if ("$ENV{CROSSCOMPILE_MACHINENAME}" STREQUAL "")