media-libs/libjpeg-turbo: add patch to avoid SIGILL for 2.1.5

See: https://github.com/libjpeg-turbo/libjpeg-turbo/issues/649
Signed-off-by: Matt Whitlock <gentoo@mattwhitlock.name>
Closes: https://github.com/gentoo/gentoo/pull/29473
Signed-off-by: Sam James <sam@gentoo.org>

2 files changed, 446 insertions, 0 deletions

diff --git a/media-libs/libjpeg-turbo/files/2.1.5-initialize-simd_support-before-every-use.patch b/media-libs/libjpeg-turbo/files/2.1.5-initialize-simd_support-before-every-use.patch
new file mode 100644
index 000000000000..8ab7ede422b1
--- /dev/null
+++ b/media-libs/libjpeg-turbo/files/2.1.5-initialize-simd_support-before-every-use.patch
@@ -0,0 +1,442 @@
+From d743a2c12e889f7605a56f5144ae2e3899c9dd4f Mon Sep 17 00:00:00 2001
+From: DRC <information@libjpeg-turbo.org>
+Date: Thu, 2 Feb 2023 08:55:37 -0600
+Subject: [PATCH] SIMD/x86: Initialize simd_support before every use
+
+As long as a libjpeg instance is only used by one thread at a time, a
+program is technically within its rights to call jpeg_start_*compress()
+in one thread and jpeg_(read|write)_*(), with the same libjpeg instance,
+in a second thread.  However, because the various jsimd_can*() functions
+are called within the body of jpeg_start_*compress() and simd_support is
+now thread-local (due to f579cc11b33e5bfeb9931e37cc74b4a33c95d2e6), that
+led to a situation in which simd_support was initialized in the first
+thread but not the second.  The uninitialized value of simd_support is
+0xFFFFFFFF, which the second thread interpreted to mean that it could
+use any instruction set, and when it attempted to use AVX2 instructions
+on a CPU that didn't support them, an illegal instruction error
+occurred.
+
+This issue was known to affect libvips.
+
+This commit modifies the i386 and x86-64 SIMD dispatchers so that the
+various jsimd_*() functions always call init_simd(), if simd_support is
+uninitialized, prior to dispatching based on the value of simd_support.
+Note that the other SIMD dispatchers don't need this, because only the
+x86 SIMD extensions currently support multiple instruction sets.
+
+This patch has been verified to be performance-neutral to within
++/- 0.4% with 32-bit and 64-bit code running on a 2.8 GHz Intel Xeon
+W3530 and a 3.6 GHz Intel Xeon W2123.
+
+Fixes #649
+---
+ simd/i386/jsimd.c   | 71 ++++++++++++++++++++++++++++++++++++++++++++-
+ simd/x86_64/jsimd.c | 47 +++++++++++++++++++++++++++++-
+ 2 files changed, 116 insertions(+), 2 deletions(-)
+
+diff --git a/simd/i386/jsimd.c b/simd/i386/jsimd.c
+index 7bd61b62f..b429b0a53 100644
+--- a/simd/i386/jsimd.c
++++ b/simd/i386/jsimd.c
+@@ -2,7 +2,7 @@
+  * jsimd_i386.c
+  *
+  * Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
+- * Copyright (C) 2009-2011, 2013-2014, 2016, 2018, 2022, D. R. Commander.
++ * Copyright (C) 2009-2011, 2013-2014, 2016, 2018, 2022-2023, D. R. Commander.
+  * Copyright (C) 2015-2016, 2018, 2022, Matthieu Darbois.
+  *
+  * Based on the x86 SIMD extension for IJG JPEG library,
+@@ -158,6 +158,9 @@ jsimd_rgb_ycc_convert(j_compress_ptr cinfo, JSAMPARRAY input_buf,
+   void (*sse2fct) (JDIMENSION, JSAMPARRAY, JSAMPIMAGE, JDIMENSION, int);
+   void (*mmxfct) (JDIMENSION, JSAMPARRAY, JSAMPIMAGE, JDIMENSION, int);
+ 
++  if (simd_support == ~0U)
++    init_simd();
++
+   switch (cinfo->in_color_space) {
+   case JCS_EXT_RGB:
+     avx2fct = jsimd_extrgb_ycc_convert_avx2;
+@@ -217,6 +220,9 @@ jsimd_rgb_gray_convert(j_compress_ptr cinfo, JSAMPARRAY input_buf,
+   void (*sse2fct) (JDIMENSION, JSAMPARRAY, JSAMPIMAGE, JDIMENSION, int);
+   void (*mmxfct) (JDIMENSION, JSAMPARRAY, JSAMPIMAGE, JDIMENSION, int);
+ 
++  if (simd_support == ~0U)
++    init_simd();
++
+   switch (cinfo->in_color_space) {
+   case JCS_EXT_RGB:
+     avx2fct = jsimd_extrgb_gray_convert_avx2;
+@@ -276,6 +282,9 @@ jsimd_ycc_rgb_convert(j_decompress_ptr cinfo, JSAMPIMAGE input_buf,
+   void (*sse2fct) (JDIMENSION, JSAMPIMAGE, JDIMENSION, JSAMPARRAY, int);
+   void (*mmxfct) (JDIMENSION, JSAMPIMAGE, JDIMENSION, JSAMPARRAY, int);
+ 
++  if (simd_support == ~0U)
++    init_simd();
++
+   switch (cinfo->out_color_space) {
+   case JCS_EXT_RGB:
+     avx2fct = jsimd_ycc_extrgb_convert_avx2;
+@@ -379,6 +388,9 @@ GLOBAL(void)
+ jsimd_h2v2_downsample(j_compress_ptr cinfo, jpeg_component_info *compptr,
+                       JSAMPARRAY input_data, JSAMPARRAY output_data)
+ {
++  if (simd_support == ~0U)
++    init_simd();
++
+   if (simd_support & JSIMD_AVX2)
+     jsimd_h2v2_downsample_avx2(cinfo->image_width, cinfo->max_v_samp_factor,
+                                compptr->v_samp_factor,
+@@ -399,6 +411,9 @@ GLOBAL(void)
+ jsimd_h2v1_downsample(j_compress_ptr cinfo, jpeg_component_info *compptr,
+                       JSAMPARRAY input_data, JSAMPARRAY output_data)
+ {
++  if (simd_support == ~0U)
++    init_simd();
++
+   if (simd_support & JSIMD_AVX2)
+     jsimd_h2v1_downsample_avx2(cinfo->image_width, cinfo->max_v_samp_factor,
+                                compptr->v_samp_factor,
+@@ -461,6 +476,9 @@ GLOBAL(void)
+ jsimd_h2v2_upsample(j_decompress_ptr cinfo, jpeg_component_info *compptr,
+                     JSAMPARRAY input_data, JSAMPARRAY *output_data_ptr)
+ {
++  if (simd_support == ~0U)
++    init_simd();
++
+   if (simd_support & JSIMD_AVX2)
+     jsimd_h2v2_upsample_avx2(cinfo->max_v_samp_factor, cinfo->output_width,
+                              input_data, output_data_ptr);
+@@ -476,6 +494,9 @@ GLOBAL(void)
+ jsimd_h2v1_upsample(j_decompress_ptr cinfo, jpeg_component_info *compptr,
+                     JSAMPARRAY input_data, JSAMPARRAY *output_data_ptr)
+ {
++  if (simd_support == ~0U)
++    init_simd();
++
+   if (simd_support & JSIMD_AVX2)
+     jsimd_h2v1_upsample_avx2(cinfo->max_v_samp_factor, cinfo->output_width,
+                              input_data, output_data_ptr);
+@@ -537,6 +558,9 @@ GLOBAL(void)
+ jsimd_h2v2_fancy_upsample(j_decompress_ptr cinfo, jpeg_component_info *compptr,
+                           JSAMPARRAY input_data, JSAMPARRAY *output_data_ptr)
+ {
++  if (simd_support == ~0U)
++    init_simd();
++
+   if (simd_support & JSIMD_AVX2)
+     jsimd_h2v2_fancy_upsample_avx2(cinfo->max_v_samp_factor,
+                                    compptr->downsampled_width, input_data,
+@@ -555,6 +579,9 @@ GLOBAL(void)
+ jsimd_h2v1_fancy_upsample(j_decompress_ptr cinfo, jpeg_component_info *compptr,
+                           JSAMPARRAY input_data, JSAMPARRAY *output_data_ptr)
+ {
++  if (simd_support == ~0U)
++    init_simd();
++
+   if (simd_support & JSIMD_AVX2)
+     jsimd_h2v1_fancy_upsample_avx2(cinfo->max_v_samp_factor,
+                                    compptr->downsampled_width, input_data,
+@@ -623,6 +650,9 @@ jsimd_h2v2_merged_upsample(j_decompress_ptr cinfo, JSAMPIMAGE input_buf,
+   void (*sse2fct) (JDIMENSION, JSAMPIMAGE, JDIMENSION, JSAMPARRAY);
+   void (*mmxfct) (JDIMENSION, JSAMPIMAGE, JDIMENSION, JSAMPARRAY);
+ 
++  if (simd_support == ~0U)
++    init_simd();
++
+   switch (cinfo->out_color_space) {
+   case JCS_EXT_RGB:
+     avx2fct = jsimd_h2v2_extrgb_merged_upsample_avx2;
+@@ -681,6 +711,9 @@ jsimd_h2v1_merged_upsample(j_decompress_ptr cinfo, JSAMPIMAGE input_buf,
+   void (*sse2fct) (JDIMENSION, JSAMPIMAGE, JDIMENSION, JSAMPARRAY);
+   void (*mmxfct) (JDIMENSION, JSAMPIMAGE, JDIMENSION, JSAMPARRAY);
+ 
++  if (simd_support == ~0U)
++    init_simd();
++
+   switch (cinfo->out_color_space) {
+   case JCS_EXT_RGB:
+     avx2fct = jsimd_h2v1_extrgb_merged_upsample_avx2;
+@@ -785,6 +818,9 @@ GLOBAL(void)
+ jsimd_convsamp(JSAMPARRAY sample_data, JDIMENSION start_col,
+                DCTELEM *workspace)
+ {
++  if (simd_support == ~0U)
++    init_simd();
++
+   if (simd_support & JSIMD_AVX2)
+     jsimd_convsamp_avx2(sample_data, start_col, workspace);
+   else if (simd_support & JSIMD_SSE2)
+@@ -797,6 +833,9 @@ GLOBAL(void)
+ jsimd_convsamp_float(JSAMPARRAY sample_data, JDIMENSION start_col,
+                      FAST_FLOAT *workspace)
+ {
++  if (simd_support == ~0U)
++    init_simd();
++
+   if (simd_support & JSIMD_SSE2)
+     jsimd_convsamp_float_sse2(sample_data, start_col, workspace);
+   else if (simd_support & JSIMD_SSE)
+@@ -867,6 +906,9 @@ jsimd_can_fdct_float(void)
+ GLOBAL(void)
+ jsimd_fdct_islow(DCTELEM *data)
+ {
++  if (simd_support == ~0U)
++    init_simd();
++
+   if (simd_support & JSIMD_AVX2)
+     jsimd_fdct_islow_avx2(data);
+   else if (simd_support & JSIMD_SSE2)
+@@ -878,6 +920,9 @@ jsimd_fdct_islow(DCTELEM *data)
+ GLOBAL(void)
+ jsimd_fdct_ifast(DCTELEM *data)
+ {
++  if (simd_support == ~0U)
++    init_simd();
++
+   if ((simd_support & JSIMD_SSE2) && IS_ALIGNED_SSE(jconst_fdct_islow_sse2))
+     jsimd_fdct_ifast_sse2(data);
+   else
+@@ -887,6 +932,9 @@ jsimd_fdct_ifast(DCTELEM *data)
+ GLOBAL(void)
+ jsimd_fdct_float(FAST_FLOAT *data)
+ {
++  if (simd_support == ~0U)
++    init_simd();
++
+   if ((simd_support & JSIMD_SSE) && IS_ALIGNED_SSE(jconst_fdct_float_sse))
+     jsimd_fdct_float_sse(data);
+   else if (simd_support & JSIMD_3DNOW)
+@@ -942,6 +990,9 @@ jsimd_can_quantize_float(void)
+ GLOBAL(void)
+ jsimd_quantize(JCOEFPTR coef_block, DCTELEM *divisors, DCTELEM *workspace)
+ {
++  if (simd_support == ~0U)
++    init_simd();
++
+   if (simd_support & JSIMD_AVX2)
+     jsimd_quantize_avx2(coef_block, divisors, workspace);
+   else if (simd_support & JSIMD_SSE2)
+@@ -954,6 +1005,9 @@ GLOBAL(void)
+ jsimd_quantize_float(JCOEFPTR coef_block, FAST_FLOAT *divisors,
+                      FAST_FLOAT *workspace)
+ {
++  if (simd_support == ~0U)
++    init_simd();
++
+   if (simd_support & JSIMD_SSE2)
+     jsimd_quantize_float_sse2(coef_block, divisors, workspace);
+   else if (simd_support & JSIMD_SSE)
+@@ -1017,6 +1071,9 @@ jsimd_idct_2x2(j_decompress_ptr cinfo, jpeg_component_info *compptr,
+                JCOEFPTR coef_block, JSAMPARRAY output_buf,
+                JDIMENSION output_col)
+ {
++  if (simd_support == ~0U)
++    init_simd();
++
+   if ((simd_support & JSIMD_SSE2) && IS_ALIGNED_SSE(jconst_idct_red_sse2))
+     jsimd_idct_2x2_sse2(compptr->dct_table, coef_block, output_buf,
+                         output_col);
+@@ -1029,6 +1086,9 @@ jsimd_idct_4x4(j_decompress_ptr cinfo, jpeg_component_info *compptr,
+                JCOEFPTR coef_block, JSAMPARRAY output_buf,
+                JDIMENSION output_col)
+ {
++  if (simd_support == ~0U)
++    init_simd();
++
+   if ((simd_support & JSIMD_SSE2) && IS_ALIGNED_SSE(jconst_idct_red_sse2))
+     jsimd_idct_4x4_sse2(compptr->dct_table, coef_block, output_buf,
+                         output_col);
+@@ -1123,6 +1183,9 @@ jsimd_idct_islow(j_decompress_ptr cinfo, jpeg_component_info *compptr,
+                  JCOEFPTR coef_block, JSAMPARRAY output_buf,
+                  JDIMENSION output_col)
+ {
++  if (simd_support == ~0U)
++    init_simd();
++
+   if (simd_support & JSIMD_AVX2)
+     jsimd_idct_islow_avx2(compptr->dct_table, coef_block, output_buf,
+                           output_col);
+@@ -1139,6 +1202,9 @@ jsimd_idct_ifast(j_decompress_ptr cinfo, jpeg_component_info *compptr,
+                  JCOEFPTR coef_block, JSAMPARRAY output_buf,
+                  JDIMENSION output_col)
+ {
++  if (simd_support == ~0U)
++    init_simd();
++
+   if ((simd_support & JSIMD_SSE2) && IS_ALIGNED_SSE(jconst_idct_ifast_sse2))
+     jsimd_idct_ifast_sse2(compptr->dct_table, coef_block, output_buf,
+                           output_col);
+@@ -1152,6 +1218,9 @@ jsimd_idct_float(j_decompress_ptr cinfo, jpeg_component_info *compptr,
+                  JCOEFPTR coef_block, JSAMPARRAY output_buf,
+                  JDIMENSION output_col)
+ {
++  if (simd_support == ~0U)
++    init_simd();
++
+   if ((simd_support & JSIMD_SSE2) && IS_ALIGNED_SSE(jconst_idct_float_sse2))
+     jsimd_idct_float_sse2(compptr->dct_table, coef_block, output_buf,
+                           output_col);
+diff --git a/simd/x86_64/jsimd.c b/simd/x86_64/jsimd.c
+index 227e27657..3f5ee77eb 100644
+--- a/simd/x86_64/jsimd.c
++++ b/simd/x86_64/jsimd.c
+@@ -2,7 +2,7 @@
+  * jsimd_x86_64.c
+  *
+  * Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
+- * Copyright (C) 2009-2011, 2014, 2016, 2018, 2022, D. R. Commander.
++ * Copyright (C) 2009-2011, 2014, 2016, 2018, 2022-2023, D. R. Commander.
+  * Copyright (C) 2015-2016, 2018, 2022, Matthieu Darbois.
+  *
+  * Based on the x86 SIMD extension for IJG JPEG library,
+@@ -145,6 +145,9 @@ jsimd_rgb_ycc_convert(j_compress_ptr cinfo, JSAMPARRAY input_buf,
+   void (*avx2fct) (JDIMENSION, JSAMPARRAY, JSAMPIMAGE, JDIMENSION, int);
+   void (*sse2fct) (JDIMENSION, JSAMPARRAY, JSAMPIMAGE, JDIMENSION, int);
+ 
++  if (simd_support == ~0U)
++    init_simd();
++
+   switch (cinfo->in_color_space) {
+   case JCS_EXT_RGB:
+     avx2fct = jsimd_extrgb_ycc_convert_avx2;
+@@ -194,6 +197,9 @@ jsimd_rgb_gray_convert(j_compress_ptr cinfo, JSAMPARRAY input_buf,
+   void (*avx2fct) (JDIMENSION, JSAMPARRAY, JSAMPIMAGE, JDIMENSION, int);
+   void (*sse2fct) (JDIMENSION, JSAMPARRAY, JSAMPIMAGE, JDIMENSION, int);
+ 
++  if (simd_support == ~0U)
++    init_simd();
++
+   switch (cinfo->in_color_space) {
+   case JCS_EXT_RGB:
+     avx2fct = jsimd_extrgb_gray_convert_avx2;
+@@ -243,6 +249,9 @@ jsimd_ycc_rgb_convert(j_decompress_ptr cinfo, JSAMPIMAGE input_buf,
+   void (*avx2fct) (JDIMENSION, JSAMPIMAGE, JDIMENSION, JSAMPARRAY, int);
+   void (*sse2fct) (JDIMENSION, JSAMPIMAGE, JDIMENSION, JSAMPARRAY, int);
+ 
++  if (simd_support == ~0U)
++    init_simd();
++
+   switch (cinfo->out_color_space) {
+   case JCS_EXT_RGB:
+     avx2fct = jsimd_ycc_extrgb_convert_avx2;
+@@ -333,6 +342,9 @@ GLOBAL(void)
+ jsimd_h2v2_downsample(j_compress_ptr cinfo, jpeg_component_info *compptr,
+                       JSAMPARRAY input_data, JSAMPARRAY output_data)
+ {
++  if (simd_support == ~0U)
++    init_simd();
++
+   if (simd_support & JSIMD_AVX2)
+     jsimd_h2v2_downsample_avx2(cinfo->image_width, cinfo->max_v_samp_factor,
+                                compptr->v_samp_factor,
+@@ -349,6 +361,9 @@ GLOBAL(void)
+ jsimd_h2v1_downsample(j_compress_ptr cinfo, jpeg_component_info *compptr,
+                       JSAMPARRAY input_data, JSAMPARRAY output_data)
+ {
++  if (simd_support == ~0U)
++    init_simd();
++
+   if (simd_support & JSIMD_AVX2)
+     jsimd_h2v1_downsample_avx2(cinfo->image_width, cinfo->max_v_samp_factor,
+                                compptr->v_samp_factor,
+@@ -403,6 +418,9 @@ GLOBAL(void)
+ jsimd_h2v2_upsample(j_decompress_ptr cinfo, jpeg_component_info *compptr,
+                     JSAMPARRAY input_data, JSAMPARRAY *output_data_ptr)
+ {
++  if (simd_support == ~0U)
++    init_simd();
++
+   if (simd_support & JSIMD_AVX2)
+     jsimd_h2v2_upsample_avx2(cinfo->max_v_samp_factor, cinfo->output_width,
+                              input_data, output_data_ptr);
+@@ -415,6 +433,9 @@ GLOBAL(void)
+ jsimd_h2v1_upsample(j_decompress_ptr cinfo, jpeg_component_info *compptr,
+                     JSAMPARRAY input_data, JSAMPARRAY *output_data_ptr)
+ {
++  if (simd_support == ~0U)
++    init_simd();
++
+   if (simd_support & JSIMD_AVX2)
+     jsimd_h2v1_upsample_avx2(cinfo->max_v_samp_factor, cinfo->output_width,
+                              input_data, output_data_ptr);
+@@ -469,6 +490,9 @@ GLOBAL(void)
+ jsimd_h2v2_fancy_upsample(j_decompress_ptr cinfo, jpeg_component_info *compptr,
+                           JSAMPARRAY input_data, JSAMPARRAY *output_data_ptr)
+ {
++  if (simd_support == ~0U)
++    init_simd();
++
+   if (simd_support & JSIMD_AVX2)
+     jsimd_h2v2_fancy_upsample_avx2(cinfo->max_v_samp_factor,
+                                    compptr->downsampled_width, input_data,
+@@ -483,6 +507,9 @@ GLOBAL(void)
+ jsimd_h2v1_fancy_upsample(j_decompress_ptr cinfo, jpeg_component_info *compptr,
+                           JSAMPARRAY input_data, JSAMPARRAY *output_data_ptr)
+ {
++  if (simd_support == ~0U)
++    init_simd();
++
+   if (simd_support & JSIMD_AVX2)
+     jsimd_h2v1_fancy_upsample_avx2(cinfo->max_v_samp_factor,
+                                    compptr->downsampled_width, input_data,
+@@ -542,6 +569,9 @@ jsimd_h2v2_merged_upsample(j_decompress_ptr cinfo, JSAMPIMAGE input_buf,
+   void (*avx2fct) (JDIMENSION, JSAMPIMAGE, JDIMENSION, JSAMPARRAY);
+   void (*sse2fct) (JDIMENSION, JSAMPIMAGE, JDIMENSION, JSAMPARRAY);
+ 
++  if (simd_support == ~0U)
++    init_simd();
++
+   switch (cinfo->out_color_space) {
+   case JCS_EXT_RGB:
+     avx2fct = jsimd_h2v2_extrgb_merged_upsample_avx2;
+@@ -590,6 +620,9 @@ jsimd_h2v1_merged_upsample(j_decompress_ptr cinfo, JSAMPIMAGE input_buf,
+   void (*avx2fct) (JDIMENSION, JSAMPIMAGE, JDIMENSION, JSAMPARRAY);
+   void (*sse2fct) (JDIMENSION, JSAMPIMAGE, JDIMENSION, JSAMPARRAY);
+ 
++  if (simd_support == ~0U)
++    init_simd();
++
+   switch (cinfo->out_color_space) {
+   case JCS_EXT_RGB:
+     avx2fct = jsimd_h2v1_extrgb_merged_upsample_avx2;
+@@ -679,6 +712,9 @@ GLOBAL(void)
+ jsimd_convsamp(JSAMPARRAY sample_data, JDIMENSION start_col,
+                DCTELEM *workspace)
+ {
++  if (simd_support == ~0U)
++    init_simd();
++
+   if (simd_support & JSIMD_AVX2)
+     jsimd_convsamp_avx2(sample_data, start_col, workspace);
+   else
+@@ -748,6 +784,9 @@ jsimd_can_fdct_float(void)
+ GLOBAL(void)
+ jsimd_fdct_islow(DCTELEM *data)
+ {
++  if (simd_support == ~0U)
++    init_simd();
++
+   if (simd_support & JSIMD_AVX2)
+     jsimd_fdct_islow_avx2(data);
+   else
+@@ -809,6 +848,9 @@ jsimd_can_quantize_float(void)
+ GLOBAL(void)
+ jsimd_quantize(JCOEFPTR coef_block, DCTELEM *divisors, DCTELEM *workspace)
+ {
++  if (simd_support == ~0U)
++    init_simd();
++
+   if (simd_support & JSIMD_AVX2)
+     jsimd_quantize_avx2(coef_block, divisors, workspace);
+   else
+@@ -963,6 +1005,9 @@ jsimd_idct_islow(j_decompress_ptr cinfo, jpeg_component_info *compptr,
+                  JCOEFPTR coef_block, JSAMPARRAY output_buf,
+                  JDIMENSION output_col)
+ {
++  if (simd_support == ~0U)
++    init_simd();
++
+   if (simd_support & JSIMD_AVX2)
+     jsimd_idct_islow_avx2(compptr->dct_table, coef_block, output_buf,
+                           output_col);
diff --git a/media-libs/libjpeg-turbo/libjpeg-turbo-2.1.5.ebuild b/media-libs/libjpeg-turbo/libjpeg-turbo-2.1.5-r1.ebuild
index 713c9e844e83..e38d1e2aa16e 100644
--- a/media-libs/libjpeg-turbo/libjpeg-turbo-2.1.5.ebuild
+++ b/media-libs/libjpeg-turbo/libjpeg-turbo-2.1.5-r1.ebuild
@@ -41,6 +41,10 @@ BDEPEND="
 	x64-cygwin? ( ${ASM_DEPEND} )
 "
 
+PATCHES=(
+	"${FILESDIR}/2.1.5-initialize-simd_support-before-every-use.patch"
+)
+
 MULTILIB_WRAPPED_HEADERS=( /usr/include/jconfig.h )
 
 src_prepare() {