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| author | Even Rouault <even.rouault@spatialys.com> | 2020-08-19 14:25:28 +0200 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2020-08-19 14:25:28 +0200 |
| commit | 62ad09fe02c4a67e727822134768e4ebe6c8cde4 (patch) | |
| tree | 9eceacdf5853933ddce244a93d35bf1e6bea3adb /configure.ac | |
| parent | e1dc2d5516562c2e6e9668325d897c0eccdc6d2a (diff) | |
| download | PROJ-62ad09fe02c4a67e727822134768e4ebe6c8cde4.tar.gz PROJ-62ad09fe02c4a67e727822134768e4ebe6c8cde4.zip | |
Revert compiler generated Fused Multiply Addition optimized routines (#2327)
Fixes #2326
Partially reverts commit b84c9d0cb61f3bd561da6092e15e294ae7e410e0 to
remove the use of the gcc 6 mechanism of generated multiple versions of
functions with different optimization flags, which was found to causes
crashes when dlopen'ing PROJ on CentOS 7.8 with gcc 8.3.1
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 21 |
1 files changed, 0 insertions, 21 deletions
diff --git a/configure.ac b/configure.ac index 542de4d2..17f19900 100644 --- a/configure.ac +++ b/configure.ac @@ -128,27 +128,6 @@ fi AC_LANG_POP([C++]) dnl --------------------------------------------------------------------------- -dnl Check if __attribute__((target_clones("fma","default"))) works -dnl This is needed for example on Alpine Linux where for some reason, building -dnl such tagged functions fails with 'error: the call requires 'ifunc', which is not supported by this target' -dnl --------------------------------------------------------------------------- - -TARGET_CLONES_FMA_FLAGS="" -AC_MSG_CHECKING([if target_clones_fma works]) -SAVED_CFLAGS="$CFLAGS" -CFLAGS="$CFLAGS -Werror" -AC_COMPILE_IFELSE([AC_LANG_PROGRAM( -[[ -__attribute__((target_clones("fma","default"))) void foo() {} -]])], -[AC_MSG_RESULT([yes])] -[TARGET_CLONES_FMA_FLAGS="-DTARGET_CLONES_FMA_ALLOWED"], -[AC_MSG_RESULT([no])]) -CFLAGS="$SAVED_CFLAGS" -AC_SUBST(TARGET_CLONES_FMA_FLAGS,$TARGET_CLONES_FMA_FLAGS) - - -dnl --------------------------------------------------------------------------- dnl Check for --enable-lto dnl --------------------------------------------------------------------------- |