diff options
Diffstat (limited to 'cmake')
| -rw-r--r-- | cmake/SelectRegex.cmake | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/cmake/SelectRegex.cmake b/cmake/SelectRegex.cmake new file mode 100644 index 000000000..900d7f150 --- /dev/null +++ b/cmake/SelectRegex.cmake @@ -0,0 +1,51 @@ +# Specify regular expression implementation +find_package(PCRE) + +if(REGEX_BACKEND STREQUAL "") + check_symbol_exists(regcomp_l "regex.h;xlocale.h" HAVE_REGCOMP_L) + + if(HAVE_REGCOMP_L) + set(REGEX_BACKEND "regcomp_l") + elseif(PCRE_FOUND) + set(REGEX_BACKEND "pcre") + else() + set(REGEX_BACKEND "builtin") + endif() +endif() + +if(REGEX_BACKEND STREQUAL "regcomp_l") + add_feature_info(regex ON "using system regcomp_l") + set(GIT_REGEX_REGCOMP_L 1) +elseif(REGEX_BACKEND STREQUAL "pcre2") + find_package(PCRE2) + + if(NOT PCRE2_FOUND) + MESSAGE(FATAL_ERROR "PCRE2 support was requested but not found") + endif() + + add_feature_info(regex ON "using system PCRE2") + set(GIT_REGEX_PCRE2 1) + + list(APPEND LIBGIT2_SYSTEM_INCLUDES ${PCRE2_INCLUDE_DIRS}) + list(APPEND LIBGIT2_LIBS ${PCRE2_LIBRARIES}) + list(APPEND LIBGIT2_PC_REQUIRES "libpcre2-8") +elseif(REGEX_BACKEND STREQUAL "pcre") + add_feature_info(regex ON "using system PCRE") + set(GIT_REGEX_PCRE 1) + + list(APPEND LIBGIT2_SYSTEM_INCLUDES ${PCRE_INCLUDE_DIRS}) + list(APPEND LIBGIT2_LIBS ${PCRE_LIBRARIES}) + list(APPEND LIBGIT2_PC_REQUIRES "libpcre") +elseif(REGEX_BACKEND STREQUAL "regcomp") + add_feature_info(regex ON "using system regcomp") + set(GIT_REGEX_REGCOMP 1) +elseif(REGEX_BACKEND STREQUAL "builtin") + add_feature_info(regex ON "using bundled PCRE") + set(GIT_REGEX_BUILTIN 1) + + add_subdirectory("${libgit2_SOURCE_DIR}/deps/pcre" "${libgit2_BINARY_DIR}/deps/pcre") + list(APPEND LIBGIT2_INCLUDES "${libgit2_SOURCE_DIR}/deps/pcre") + list(APPEND LIBGIT2_OBJECTS $<TARGET_OBJECTS:pcre>) +else() + message(FATAL_ERROR "The REGEX_BACKEND option provided is not supported") +endif() |