diff options
| author | Tomasz Figa <[email protected]> | 2016-12-14 17:00:27 +0900 |
|---|---|---|
| committer | Emil Velikov <[email protected]> | 2017-01-18 13:25:17 +0000 |
| commit | 2d14ae6bea4af444ca77e9f6e7d3898a3f39b2d3 (patch) | |
| tree | b62631575727023163f6d9ed9b8fb06292790f4d | |
| parent | 1a0aa468f354f0ee94dd383cd40ae915584624aa (diff) | |
configure.ac: Respect LLVM_CFLAGS in LLVM version detection
When compiling LLVM headers, including llvm-config.h, we need to respect
LLVM_CFLAGS. This is especially crucial if LLVM is located in a
non-standard location and it happens that llvm-config.h includes another
header. In such case the detection would fail due to missing header,
because the path is provided in LLVM_CFLAGS.
Let's add LLVM_CFLAGS to global CFLAGS for the time of detection and then
restore the original flags, as done in other places of the script.
Signed-off-by: Tomasz Figa <[email protected]>
Reviewed-by: Emil Velikov <[email protected]>
| -rw-r--r-- | configure.ac | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 655b76ed6e6..182d0726c30 100644 --- a/configure.ac +++ b/configure.ac @@ -979,6 +979,10 @@ llvm_set_environment_variables() { LLVM_INCLUDEDIR=`$LLVM_CONFIG --includedir` LLVM_LIBDIR=`$LLVM_CONFIG --libdir` + # We need to respect LLVM_CFLAGS when compiling LLVM headers. + save_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS $LLVM_CFLAGS" + AC_COMPUTE_INT([LLVM_VERSION_MAJOR], [LLVM_VERSION_MAJOR], [#include "${LLVM_INCLUDEDIR}/llvm/Config/llvm-config.h"]) AC_COMPUTE_INT([LLVM_VERSION_MINOR], [LLVM_VERSION_MINOR], @@ -986,6 +990,8 @@ llvm_set_environment_variables() { AC_COMPUTE_INT([LLVM_VERSION_PATCH], [LLVM_VERSION_PATCH], [#include "${LLVM_INCLUDEDIR}/llvm/Config/llvm-config.h"]) + CFLAGS="$save_CFLAGS" + # Only needed for LLVM < 3.6.0 if test -z "$LLVM_VERSION_PATCH"; then LLVM_VERSION_PATCH=0 |