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| author | Marc Chevrier <marc.chevrier@gmail.com> | 2020-09-23 18:06:35 +0200 |
|---|---|---|
| committer | Brad King <brad.king@kitware.com> | 2020-09-23 14:25:30 -0400 |
| commit | 5b10f96793ab6f3a4ef446d67c09ea91b7898584 (patch) | |
| tree | 8d6576685a699602fdb4055727dfe4754e83907f /CompileFlags.cmake | |
| parent | c9a3ae13563f1e66d90225fff98fbc207195c155 (diff) | |
| download | cmake-5b10f96793ab6f3a4ef446d67c09ea91b7898584.tar.gz | |
Linux: Compile with _FILE_OFFSET_BITS=64 on 32-bit Linux
To avoid problems accessing filesystem, use 64-bit file offsets when
compilation model is 32-bit. This explicit definition is needed now
that KWSys does not provide LFS settings in its headers anymore.
Fixes: #20568
Diffstat (limited to 'CompileFlags.cmake')
| -rw-r--r-- | CompileFlags.cmake | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/CompileFlags.cmake b/CompileFlags.cmake index 053259f47c..1c5f1beca9 100644 --- a/CompileFlags.cmake +++ b/CompileFlags.cmake @@ -53,6 +53,12 @@ if(CMAKE_SYSTEM_PROCESSOR MATCHES "^parisc") endif() endif() +# Use 64-bit off_t on 32-bit Linux +if (CMAKE_SYSTEM_NAME STREQUAL "Linux" AND CMAKE_SIZEOF_VOID_P EQUAL 4) + # ensure 64bit offsets are used for filesystem accesses for 32bit compilation + add_definitions(-D_FILE_OFFSET_BITS=64) +endif() + # Workaround for TOC Overflow on ppc64 set(bigTocFlag "") if(CMAKE_SYSTEM_NAME STREQUAL "AIX" AND |