From 1ae06e002da6535593e988e1148ce001bb2abc2d Mon Sep 17 00:00:00 2001 From: Brad King Date: Mon, 10 Nov 2014 19:56:09 +0100 Subject: CMake: Restore order-dependent header checks Revert commit 1269df2e3b (Cmake: Don't check for all headers each time, 2014-08-15) and add a comment explaining the purpose of the original code. The check_include_file_concat macro is intended to be called multiple times on a sequence of possibly dependent headers. Later headers may depend on earlier headers to provide declarations. They cannot be safely included independently on some platforms. For example, many POSIX APIs document including sys/types.h before some other headers. Also on some OS X versions sys/socket.h must be included before net/if.h or the check for the latter will fail. Signed-off-by: Brad King --- CMake/Macros.cmake | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'CMake') diff --git a/CMake/Macros.cmake b/CMake/Macros.cmake index b07afc6ac..9b9338e52 100644 --- a/CMake/Macros.cmake +++ b/CMake/Macros.cmake @@ -11,8 +11,11 @@ macro(CHECK_LIBRARY_EXISTS_CONCAT LIBRARY SYMBOL VARIABLE) endmacro(CHECK_LIBRARY_EXISTS_CONCAT) # Check if header file exists and add it to the list. +# This macro is intended to be called multiple times with a sequence of +# possibly dependent header files. Some headers depend on others to be +# compiled correctly. macro(CHECK_INCLUDE_FILE_CONCAT FILE VARIABLE) - check_include_file("${FILE}" ${VARIABLE}) + check_include_files("${CURL_INCLUDES};${FILE}" ${VARIABLE}) if(${VARIABLE}) set(CURL_INCLUDES ${CURL_INCLUDES} ${FILE}) set(CURL_TEST_DEFINES "${CURL_TEST_DEFINES} -D${VARIABLE}") -- cgit v1.2.3