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| author | Jo-Philipp Wich <jo@mein.io> | 2023-11-02 00:31:59 +0100 |
|---|---|---|
| committer | Jo-Philipp Wich <jo@mein.io> | 2023-11-02 00:31:59 +0100 |
| commit | cfb24ea4f12131dcefe4f1ede2f51d3d16b88dec (patch) | |
| tree | 0ec82123631c4296f0708920845065e5599acedb /CMakeLists.txt | |
| parent | 448c7632dbe12c0cd0385e25503288d54a86c1e7 (diff) | |
build: avoid redefining _FORTIFY_SOURCE
Check if `-D_FORTIFY_SOURCE` was already passed via the CFLAGS environment
variable and only add the flag if not already present.
Fixes: ea046bd ("build: enable source fortification by default")
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
Diffstat (limited to 'CMakeLists.txt')
| -rw-r--r-- | CMakeLists.txt | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt index e3cc37e..41fedb6 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -3,12 +3,17 @@ include(CheckFunctionExists) include(CheckSymbolExists) project(ucode C) -add_definitions(-Os -Wall -Werror --std=gnu99 -ffunction-sections -fwrapv -D_GNU_SOURCE -D_FORTIFY_SOURCE=2) +add_definitions(-Os -Wall -Werror --std=gnu99 -ffunction-sections -fwrapv -D_GNU_SOURCE) if(CMAKE_C_COMPILER_VERSION VERSION_GREATER 6) add_definitions(-Wextra -Werror=implicit-function-declaration) add_definitions(-Wformat -Werror=format-security -Werror=format-nonliteral) endif() + +if(NOT CMAKE_C_FLAGS MATCHES -D_FORTIFY_SOURCE=) + add_definitions(-D_FORTIFY_SOURCE=2) +endif() + add_definitions(-Wmissing-declarations -Wno-error=unused-variable -Wno-unused-parameter) include_directories(include) |