diff options
Diffstat (limited to 'cmake/pcre.cmake')
| -rw-r--r-- | cmake/pcre.cmake | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/cmake/pcre.cmake b/cmake/pcre.cmake index 894bde38974..4c113929866 100644 --- a/cmake/pcre.cmake +++ b/cmake/pcre.cmake @@ -1,11 +1,23 @@ +INCLUDE (CheckCSourceRuns) + SET(WITH_PCRE "auto" CACHE STRING "Which pcre to use (possible values are 'bundled', 'system', or 'auto')") MACRO (CHECK_PCRE) IF(WITH_PCRE STREQUAL "system" OR WITH_PCRE STREQUAL "auto") - CHECK_LIBRARY_EXISTS(pcre pcre_stack_guard "" HAVE_PCRE) + CHECK_LIBRARY_EXISTS(pcre pcre_stack_guard "" HAVE_PCRE_STACK_GUARD) + IF(NOT CMAKE_CROSSCOMPILING) + SET(CMAKE_REQUIRED_LIBRARIES "pcre") + CHECK_C_SOURCE_RUNS(" + #include <pcre.h> + int main() { + return -pcre_exec(NULL, NULL, NULL, -999, -999, 0, NULL, 0) < 256; + }" PCRE_STACK_SIZE_OK) + SET(CMAKE_REQUIRED_LIBRARIES) + ENDIF() ENDIF() - IF(NOT HAVE_PCRE OR WITH_PCRE STREQUAL "bundled") + IF(NOT HAVE_PCRE_STACK_GUARD OR NOT PCRE_STACK_SIZE_OK OR + WITH_PCRE STREQUAL "bundled") IF (WITH_PCRE STREQUAL "system") MESSAGE(FATAL_ERROR "system pcre is not found or unusable") ENDIF() |